Skip to content

Learn the ideas

Theory topics

Short explanations and the questions a fuller lesson should answer. Story links are labelled as mentioned, illustrated or explained, according to what the article actually covers.

Mentioned means the idea appears briefly. Illustrated means the story gives an example. Explained means the article directly answers the question. Longer lessons will be added as they are written.

Deposits, bonds and rates

Bank deposits

A deposit is money the bank owes its customer. The bank may use some of it for loans or investments, while keeping ways to meet withdrawals.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. What happens to a deposit after it enters a bank?

  2. Why can customers withdraw before the bank's loans or investments are repaid?

Fixed deposit versus bond

An FD pays the agreed rate under its terms. An existing bond can change in market price when new bonds offer different yields.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. What is fixed for an FD saver, and what can change in a bond's market price?

  2. Why does a higher rate on a new product affect an older FD and bond differently?

    illustratedWhy the RBI Raised Rates Off Cycle in May 2022

    explainedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

How a bond works

A bond has a face value, a purchase price, promised payments and a repayment date. Those parts determine the cash an investor receives.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. What are a bond's face value, coupon, purchase price and repayment date?

  2. How do a bond's payments work in a simple ₹100 example?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

Bond price and yield

When comparable new bonds offer a higher return, an older bond with fixed payments usually sells for less. Price and yield move in opposite directions.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. Why does an older fixed-rate bond's price fall when comparable new bonds offer a higher yield?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

    explainedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. How can a bond's price be calculated from its future payments and the market yield?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

Bond duration

Duration estimates how sensitive a bond's price is to interest-rate changes. It is different from the date when the bond is repaid.

Supporting questions (2)
  1. How does duration measure a bond's sensitivity to interest-rate changes?

  2. Why is a 6.2-year duration not the same as a bond maturing in 6.2 years?

Repo rate

The repo rate is the rate at which the RBI lends short-term funds to banks against eligible securities. Changing it signals policy and influences other rates.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run, Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day.

Supporting questions (2)
  1. What is the repo rate and how does the RBI use it?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

    mentionedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

    mentionedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

  2. How does a change in the repo rate reach deposit and loan rates?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

Policy interest rates and market rates

Central banks set policy rates that influence borrowing costs and market yields, but the rates are not identical.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run, How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse.

Supporting questions (2)
  1. How do central-bank policy-rate changes reach borrowing costs and bond yields?

    illustratedWhy the RBI Raised Rates Off Cycle in May 2022

    mentionedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. How does the RBI repo rate differ from the US Fed's target range?

Credit risk and interest-rate risk

Credit risk is the chance of missed payment. Interest-rate risk is the chance that changing rates lower an asset's market value.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. How can a bond be unlikely to default yet lose market value?

    explainedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. What does credit risk measure, and what does interest-rate risk measure?

Government and agency mortgage-backed securities

Mortgage-backed securities pass payments from pools of home loans to investors. Government or agency support can reduce credit risk without removing every risk.

Supporting questions (2)
  1. How do mortgage payments reach investors in an agency mortgage-backed security?

  2. Which risks remain even when a government or agency backs a security?

Government securities

Bonds and similar instruments issued by the government. Banks hold them as relatively safe investments, and rules require banks to hold a share of deposits in them.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. Why do banks hold government securities?

  2. Why are government securities seen as low in default risk, yet can still lose market value?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

Compounding

Compounding is earning returns on earlier returns as well as on the original amount. Over long periods, the same rate produces a much larger total than simple interest on the original sum.

Supporting questions (2)
  1. How does ₹1,00,000 grow under simple interest versus yearly compounding at the same rate?

  2. Why does compounding also make a large early loss hard to recover from?

Real interest rate

A real interest rate is the stated interest rate minus inflation. It shows roughly how much buying power a deposit gains or loses once rising prices are counted.

Supporting questions (3)
  1. What is the difference between a nominal and a real interest rate?

  2. What does it mean if a deposit's real rate is negative?

  3. If a deposit pays 7% and inflation is 5%, what is the real return?

Credit rating

A credit rating is an agency's opinion of how likely a borrower is to repay on time. A downgrade can raise the interest a borrower must pay and can force some investors to sell.

Supporting questions (3)
  1. What does a credit rating say, and what is it not?

  2. Why can a rating downgrade raise a borrower's cost of funds?

  3. How can concern about a credit-rating downgrade affect confidence in a borrower?

Fixed deposit

A fixed deposit holds money at a bank for a set term at an agreed rate. It gives predictable interest, but early withdrawal can reduce interest and inflation can erode what the money buys.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (3)
  1. How does a fixed deposit earn interest over its term?

    illustratedWhy the RBI Raised Rates Off Cycle in May 2022

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. What happens to interest if a fixed deposit is withdrawn early?

  3. Why can a fixed deposit grow in rupees yet lose buying power?

Savings account

A savings account pays a modest, variable rate of interest and allows money to be withdrawn at any time. It suits money needed soon, but its rate often trails inflation.

Supporting questions (2)
  1. How does a savings account earn interest, and how does it differ from a fixed deposit?

  2. Why does a savings account often lose to inflation over many years?

Treasury bills

Treasury bills are short-term government debt sold at a discount and repaid at face value. They carry little default risk, but a foreign bill held in rupees still carries currency risk.

Supporting questions (2)
  1. What is a Treasury bill and how does it pay a return?

  2. Why can a US Treasury bill lose value for an Indian investor even though the bill is repaid in full?

Credit and risk spreads

A spread is a difference between yields or funding costs. A wider spread over a safer benchmark can reflect greater concern about credit risk or liquidity.

Supporting questions (1)
  1. What does a widening yield spread mean for a trade that expects yields to converge?

Inflation expectations

What households and businesses expect about future prices can influence current spending, wage demands and price-setting. Central banks consider the risk that temporary inflation becomes persistent.

Appears in Why the RBI Raised Rates Off Cycle in May 2022.

Supporting questions (1)
  1. Why do central banks worry that expectations can make inflation persist?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

Basis points and percentage points

One basis point is 0.01 percentage points. A change in an interest rate measured in basis points is different from its percentage change relative to the starting rate.

Appears in Why the RBI Raised Rates Off Cycle in May 2022.

Supporting questions (1)
  1. How do basis points translate into a change in an interest rate?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

Floating-rate loans and resets

A floating-rate loan’s interest rate can change with its benchmark under the contract’s reset rules. A rate increase can change instalments, repayment time or both.

Appears in Why the RBI Raised Rates Off Cycle in May 2022.

Supporting questions (1)
  1. How can a benchmark-rate increase change a floating-rate loan’s instalment or term?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

Bank liquidity and runs

Cash reserve ratio

The cash reserve ratio is the share of a bank's net demand and time liabilities it must keep as cash with the RBI. Raising it reduces cash available elsewhere in the banking system.

Appears in Why the RBI Raised Rates Off Cycle in May 2022.

Supporting questions (2)
  1. What must a bank hold when the RBI raises the cash reserve ratio?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

  2. How does raising the cash reserve ratio differ from raising the repo rate?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

Liquidity

Liquidity is the ability to get cash when it is needed. A bank can own valuable long-term assets and still struggle to pay withdrawals today.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (6)
  1. What does having enough ready cash mean for a bank?

  2. Why are valuable long-term assets not always immediately spendable?

    explainedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  3. Why can market liquidity vanish when many people try to sell at once?

  4. Why can a fund be unable to cut positions quickly when markets become hard to trade in?

  5. Why can an institution with valuable assets still be unable to pay today?

  6. Why do some investments take days to turn into cash while others take minutes?

Asset–liability mismatch

A timing mismatch arises when a bank's deposits can leave soon but its loans or bonds repay much later.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. What goes wrong when deposits can leave today but bonds or loans repay years later?

    explainedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. How is a timing mismatch different from a loss in asset value?

Liquidity risk versus solvency risk

Liquidity risk concerns cash needed now. Solvency risk concerns whether assets can cover what a bank owes after losses.

Supporting questions (2)
  1. When is a bank short of cash, and when are its assets insufficient to cover what it owes?

  2. How can concern about liquidity lead to concern about solvency, or vice versa?

Collateral and borrowing against securities

A bank can pledge eligible securities to borrow cash instead of selling them, subject to lender rules and available collateral.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. How can a bank obtain cash by borrowing against securities instead of selling them?

    illustratedWhy the RBI Raised Rates Off Cycle in May 2022

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. Why do collateral eligibility, market value and preparation matter?

Deposit insurance

Deposit insurance protects eligible deposits up to a stated limit. The limit and rules depend on the country and the bank.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (3)
  1. What does deposit insurance cover, and where is its limit?

  2. Why might customers with balances above the insurance limit withdraw quickly?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  3. How do the current US and Indian deposit-insurance rules compare?

Depositor concentration

If many depositors depend on the same industry or funding network, they may need cash or react to concern at the same time.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. Why can a bank be vulnerable when many customers work in one industry or share investors?

    explainedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. Why is a bank with a few very large depositors more exposed to a run?

Bank run

A bank run occurs when many customers withdraw quickly and the bank cannot raise enough cash to meet them in time.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. How can many individually rational withdrawals overwhelm a bank's available cash?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. How do withdrawals already made differ from withdrawals a bank expects?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

Financial contagion

Contagion is the spread of financial concern or stress from one institution or market to others. Timing alone does not prove causation.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run, How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse.

Supporting questions (3)
  1. How can concern about one bank spread to others?

    illustratedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

  2. What evidence is needed before saying one bank's failure caused another event?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  3. Can a fall in a foreign market reach Indian shares, and by how much?

Venture capital funding and start-up deposits

Start-ups may hold large cash balances after funding rounds and draw them down as they spend, making deposit flows sensitive to funding conditions.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. Why might start-ups hold large bank balances and draw them down when funding slows?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. How can start-ups' shared funding network affect a bank's deposit base?

Refinancing and rollover risk

A borrower may depend on lenders renewing debt when it falls due. If they refuse, cash must be found elsewhere even when the borrower expects its assets to pay later.

Supporting questions (1)
  1. What happens when lenders stop renewing short-term loans?

Bank accounting and capital

Unrealised and realised loss

A fall in market value is an unrealised loss while the asset is held. Selling at the lower price makes the loss realised.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. When is a lower market price a paper loss, and when does a sale make it realised?

    explainedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. Why can an unrealised loss matter before an asset is sold?

Held to maturity and available for sale

These are different accounting categories for securities. Their recorded values and the treatment of gains or losses differ.

Supporting questions (2)
  1. Why do banks classify securities as held to maturity or available for sale?

  2. Which portfolio did SVB sell from on 8 March 2023, and why must it be distinguished from the held-to-maturity portfolio?

Amortised cost versus market value

Amortised cost follows accounting adjustments from purchase; market value estimates what an asset could fetch now. They can differ when rates move.

Supporting questions (2)
  1. Why can a bond's recorded value differ from the price at which it could be sold today?

  2. What does amortised-cost accounting show, and what does it leave out?

Hedging interest-rate risk

A hedge is a position intended to offset some losses from rate changes. It has costs and does not eliminate every risk.

Supporting questions (2)
  1. What is an interest-rate hedge intended to offset?

  2. What are the limits and costs of hedging interest-rate risk?

Additional Tier 1 (AT1) bonds

AT1 bonds are bank-issued debt designed to absorb losses before a bank fails. Their terms can let the bank write them down or convert them to shares when a stated trigger occurs.

Supporting questions (2)
  1. Why might bondholders and shareholders face different outcomes in a bank rescue?

  2. How can a bank bond absorb losses before the bank formally fails?

Bank capital

Capital is the cushion that absorbs losses for a bank's owners. It is different from the cash used to pay depositors today.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (3)
  1. What is a bank's capital cushion, and how is it different from cash?

  2. Why might a bank seek new capital after booking a loss?

    mentionedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  3. How do unpaid loans erode a bank’s capital?

Capital ratios and bad-loan ratios

Capital ratios compare a bank's capital with risk-weighted assets. Bad-loan ratios measure loans with repayment problems; neither alone describes every risk.

Supporting questions (2)
  1. What do risk-weighted capital, core capital and gross non-performing assets measure?

  2. Why do system-wide Indian ratios not prove that a particular bank had no exposure?

Unsecured loan

An unsecured loan has no specific asset behind it that the lender can sell if the borrower does not repay. The lender bears the loss directly.

Supporting questions (1)
  1. What happens to a bank if an unsecured loan is not repaid?

Stress testing and model limits

Stress testing asks how a portfolio or institution would cope with adverse conditions. Models based on calm periods can understate losses when correlations, liquidity and funding conditions change together.

Supporting questions (1)
  1. Why can risk models based on calm periods fail during a market crisis?

Market regulation and fraud

Custody, segregation and claims

Owning an asset held in custody is different from holding a claim on a platform. Whether customer assets are segregated or commingled affects what customers can recover if the platform fails.

Supporting questions (2)
  1. What is the difference between owning an asset and having a claim on an exchange?

  2. Why does it matter whether customer assets are segregated or commingled?

Ready forward deals

A deal where one party sells a security and agrees to buy it back at a fixed price on a set date. In effect it is a short-term loan in the form of a sale and purchase.

Supporting questions (2)
  1. What is a ready forward deal?

  2. How can a loan be hidden inside a sale and buyback?

Bank receipts

A paper a bank issues saying it holds a security on the buyer's behalf, instead of handing over the security itself. It is only as good as the security behind it.

Supporting questions (2)
  1. What is a bank receipt?

  2. Why is a receipt not the same as the security it refers to?

Securities depository

A central institution that holds securities in electronic form and records who owns them. It replaces paper certificates and hand-kept records.

Supporting questions (1)
  1. Why is a central depository useful for securities?

Securities market regulator

The public body that registers and supervises brokers and other market participants. In India this is the Securities and Exchange Board of India (SEBI).

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (2)
  1. Why are brokers registered with the market regulator?

  2. What does a market regulator do after an allegation is made about a listed company?

Derivative contract size and lot size

Derivatives trade in fixed lots. For an index contract, lot size times the index level gives the contract's notional value, so changing either changes how much exposure one contract carries. The notional value is not the amount paid up front.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (3)
  1. Why might a regulator raise the contract size of index derivatives?

    explainedSEBI's October 2024 Index Derivatives Rules, Explained

  2. How do lot size and index level together set a contract's value?

    illustratedSEBI's October 2024 Index Derivatives Rules, Explained

  3. What is the difference between a contract's notional value and the premium a buyer pays?

Expiry day in options trading

An option has a last day, its expiry. Contracts close to expiry can change in price within minutes, which is why exchanges and regulators watch expiry-day trading closely.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (3)
  1. Why does expiry-day trading in short-dated options draw regulatory attention?

    explainedSEBI's October 2024 Index Derivatives Rules, Explained

  2. Why might a regulator limit how many weekly expiries an exchange offers?

  3. Why can an option's price change sharply in the last hours before expiry?

Margin requirement

Margin is money a broker must deposit as a cushion against losses on trades. Regulators and exchanges can raise it when prices swing sharply.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (2)
  1. Why might a regulator raise margins during a sharp market fall?

  2. Why might a regulator require brokers to collect margin or premium upfront?

    explainedSEBI's October 2024 Index Derivatives Rules, Explained

Rolling settlement

In rolling settlement, each day's trades are settled after a fixed number of days, with no carrying forward to a later settlement. It leaves less room for obligations to build up.

Supporting questions (1)
  1. What is rolling settlement and how does it differ from carry-forward?

Circuit breaker

A circuit breaker is a rule that pauses trading after a large market fall. The pause gives participants time to settle up and check they can pay.

Supporting questions (1)
  1. What is a circuit breaker and why do markets use one?

Short selling

A short seller takes a position that gains if a price falls, for example by borrowing a security to sell it or by using a derivative. A published claim by a short seller is an allegation, not a finding.

Supporting questions (3)
  1. What is a short position, and how can a short seller gain when a price falls?

  2. Why is a short seller's report an allegation rather than proof?

  3. How does a short seller profit when a share price falls, and what is the risk?

Insider trading

Insider trading is dealing in a company's shares while holding important non-public information. Securities laws in many countries, including India, prohibit it.

Supporting questions (2)
  1. Why do regulators prohibit trading on non-public price-sensitive information?

  2. What kind of information counts as unpublished price-sensitive information?

Follow-on public offer

A follow-on public offer is an offer of shares to the public by an already listed company. Its subscription, completion or withdrawal is separate from movements in its existing shares.

Supporting questions (1)
  1. How can a listed company’s follow-on share offer be withdrawn after subscription?

Fund redemption and exit restrictions

Redemption turns fund units into a cash payment under the scheme’s terms. Limits or suspensions can restrict when or how much an investor can withdraw, independently of the quoted unit value.

Supporting questions (1)
  1. Why does a fund need cash to redeem units, and how can exit terms restrict withdrawals?

Financial allegations, evidence and formal findings

Reports, complaints and testimony state claims or evidence. A court or regulator’s decision establishes findings within its scope, subject to the status of appeals and later proceedings.

Supporting questions (1)
  1. How do a financial allegation, testimony and a formal finding differ?

Market makers

A market maker stands ready to buy and sell an asset, helping other participants trade. Its funding, inventory and relationship with a trading venue can affect the risks involved.

Supporting questions (1)
  1. What does a market maker do on a trading platform?

Competition and entry barriers

Licences, tariffs and other entry conditions affect which firms can compete. Lower barriers can give customers more choice while putting established firms under pressure.

Supporting questions (1)
  1. How can removing licensing or import barriers change competition?

Public-sector disinvestment

Disinvestment is the sale of some government ownership in a public-sector enterprise. A partial stake sale is distinct from transferring control or selling the whole enterprise.

Supporting questions (1)
  1. What does selling part of the government’s equity in a public-sector company mean?

ADRs and GDRs

Depository receipts let investors trade an interest in a company’s shares through another market. Indian companies have used ADRs and GDRs to raise money from investors abroad.

Supporting questions (1)
  1. How can an Indian company use ADRs or GDRs to raise money abroad?

Index arbitrage

Trading between an index’s shares and related futures links their prices. During stress, selling pressure in one market can therefore reach the other.

Supporting questions (1)
  1. How can falling index-futures prices transmit selling pressure to shares?

Calendar spreads

A calendar spread combines opposite positions in related contracts with different expiries. Their gains and losses may partly offset, but an expiring contract can behave differently from a later one.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (1)
  1. Why might a calendar spread lose its margin benefit on expiry day?

    explainedSEBI's October 2024 Index Derivatives Rules, Explained

Trading position limits

Position limits restrict the size of trading exposures. Checks during the trading day can detect positions that would be missed by an end-of-day check.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (1)
  1. Why can end-of-day position checks miss trading risk during the day?

    explainedSEBI's October 2024 Index Derivatives Rules, Explained

Bank failure and response

Chapter 11 bankruptcy and claims

Chapter 11 is a US court process in which a company seeks protection from creditors while a plan decides who is paid what. A creditor's claim is the legal amount fixed by that process; the amount finally paid on it can be different, and depends on the plan and the assets available.

Supporting questions (2)
  1. Why can a bankruptcy claim be fixed at the filing-date value rather than a later price?

  2. What is the difference between a creditor's allowed claim and the amount it finally recovers?

Bank closure, receivership and resolution

When a bank closes, authorities use a resolution process to handle deposits, assets and claims under the rules of that country.

Supporting questions (2)
  1. Who closes a bank, what does a receiver do, and what happens to deposits, assets, shareholders and creditors?

  2. How do bank-resolution procedures differ across countries?

Systemic risk exception and depositor protection

Authorities may make a specific exception to ordinary protection limits when they judge a failure to pose wider financial risk.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. Why were SVB depositors above the ordinary insurance limit protected, and who was not protected?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. Why does SVB's depositor protection not promise the same outcome for every future failure?

Central-bank emergency lending

A central bank can offer eligible banks temporary loans against specified collateral to ease a shortage of cash.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. How can temporary lending against eligible bonds help banks meet withdrawals?

    explainedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. How did the 2023 US Bank Term Funding Program work as a historical example?

Urban cooperative bank

A cooperative bank is owned by its members and serves a local community, with its own rules on whom it may lend to. In India, urban cooperative banks are supervised by the RBI for banking matters.

Supporting questions (1)
  1. What went wrong when a cooperative bank lent to share brokers against the rules?

Moral hazard

Moral hazard is the tendency to take more risk when someone else bears part of the loss. Deposit insurance and rescues can create it, which is why they come with rules.

Supporting questions (2)
  1. How can a promise of rescue encourage a bank to take more risk?

  2. How do rules such as capital requirements and insurance limits reduce moral hazard?

Systemic financial risk

A failure can threaten the wider financial system through shared exposures, disrupted payments, funding withdrawals or forced sales. A large loss at one firm alone does not establish system-wide damage.

Supporting questions (1)
  1. How can connections between financial institutions turn one failure into a wider risk?

Commodities and trade

Oil import price shock

When a country imports much of its crude oil, a higher dollar price can raise its import bill and feed into domestic costs. The effect depends on volumes, the exchange rate and how prices are passed on.

Appears in June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving, The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (2)
  1. How can a higher global crude-oil price reach India's import bill and domestic prices?

    illustratedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

    explainedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

  2. Why can an oil-price rise affect an oil producer and an oil-using business differently?

Risk premium in a commodity price

In a commodity market, a risk premium is the extra price buyers pay today because a supply disruption is feared but has not yet happened. The premium can shrink quickly if the feared event does not occur. The same word is used more broadly for the extra return investors expect for taking on risk.

Appears in June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving, The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (2)
  1. Why can oil rise on a threat to shipping rather than an actual shortage?

    explainedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

    illustratedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

  2. Why can a risk premium disappear even if prices stay volatile?

    explainedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

Shipping chokepoint and freight cost

A chokepoint is a narrow sea passage that many ships must use. If ships have to avoid it, voyages get longer and freight and insurance costs can rise, which raises the cost of imported goods even when the goods are available.

Appears in Red Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs, The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (2)
  1. What is a shipping chokepoint, and why does it matter to trade?

    explainedRed Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs

    explainedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

  2. How does a longer sea route change the landed price of an import?

    explainedRed Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs

Customs duty

A customs duty is a tax on imported goods. A high duty makes imports costlier and shields local producers from foreign competition.

Appears in The April 2025 US Reciprocal Tariffs, Explained for India, The August 2025 US Tariff on Indian Goods, Explained.

Supporting questions (7)
  1. What is a customs duty and how does it shield local makers?

    explainedThe April 2025 US Reciprocal Tariffs, Explained for India

    explainedThe August 2025 US Tariff on Indian Goods, Explained

  2. How did the 1991 Budget change customs duty rates?

  3. Who pays an import duty first, and who may ultimately bear it?

    explainedThe April 2025 US Reciprocal Tariffs, Explained for India

    explainedThe August 2025 US Tariff on Indian Goods, Explained

  4. Why might an importer, exporter and consumer each bear part of a new tariff?

    illustratedThe April 2025 US Reciprocal Tariffs, Explained for India

    illustratedThe August 2025 US Tariff on Indian Goods, Explained

  5. How are separate percentage import duties combined on a shipment’s customs value?

    explainedThe August 2025 US Tariff on Indian Goods, Explained

  6. Why do a shipment’s customs entry date and product exemptions matter for a tariff?

    explainedThe April 2025 US Reciprocal Tariffs, Explained for India

    explainedThe August 2025 US Tariff on Indian Goods, Explained

  7. Why is the value of exports exposed to tariffs different from the actual loss caused by them?

    illustratedThe August 2025 US Tariff on Indian Goods, Explained

Trade deficit

A trade deficit arises when a country's imports of goods exceed its exports. It is one part of the current account, which also includes services and transfers.

Appears in The April 2025 US Reciprocal Tariffs, Explained for India.

Supporting questions (3)
  1. What is a trade deficit, and how does it differ from the current-account deficit?

  2. Why does a country that imports most of its oil see its trade deficit widen when oil prices rise?

  3. What does a goods trade deficit measure?

    explainedThe April 2025 US Reciprocal Tariffs, Explained for India

Supply, demand and price

Prices tend to rise when buyers want more than sellers can supply, and fall when supply exceeds demand. For goods like oil, expectations about future supply can move today's price too.

Appears in Red Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs, June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving, The August 2025 US Tariff on Indian Goods, Explained, The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (2)
  1. Why does a fall in supply raise the price of a commodity?

    explainedRed Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs

    explainedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

  2. Why can the expected future supply move today's price?

    explainedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

    explainedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

Gold as an investment

Gold pays no interest or dividend, so its return comes only from price changes. Its price often moves differently from shares, which is why some investors hold it alongside them.

Supporting questions (3)
  1. How does gold earn a return when it pays no interest or dividend?

  2. Why do some investors hold gold alongside shares?

  3. Why can the price of gold in India differ from the international gold price?

Import bill: price and volume

An import bill depends on the amount bought and the price per unit. A change in both compounds; the domestic-currency cost also depends on the exchange rate and other charges.

Appears in June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving.

Supporting questions (1)
  1. How do price and quantity changes combine to change an import bill?

    illustratedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

Cost pass-through

A higher input cost can be absorbed in a business’s profit, passed to customers through prices, or shared between them. Contracts, competition and the size of that input affect the result.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Red Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs, The April 2025 US Reciprocal Tariffs, Explained for India, June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving, The August 2025 US Tariff on Indian Goods, Explained, The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (1)
  1. How can a higher input cost affect selling prices and business profits?

    illustratedWhy the RBI Raised Rates Off Cycle in May 2022

    illustratedRed Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs

    explainedThe April 2025 US Reciprocal Tariffs, Explained for India

    explainedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

    illustratedThe August 2025 US Tariff on Indian Goods, Explained

    illustratedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

Commodity benchmark prices

A benchmark such as Brent is a reference price. The price paid for a particular cargo can differ because of its grade, delivery location, freight and contract terms.

Appears in June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving, The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (1)
  1. Why can an importer’s actual oil price differ from the Brent benchmark?

    explainedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

Spot and futures prices

Spot prices refer to current physical-market transactions; futures prices refer to standardised contracts for later delivery or settlement. Their dates, maturities and price measures must be distinguished.

Appears in The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (1)
  1. Why must spot and futures prices be distinguished when describing a commodity price shock?

    mentionedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

Working capital and cash tied up in trade

Businesses need funds while paying for inputs, holding goods and waiting for customers to pay. Longer delivery or collection times can tie up cash and increase financing needs.

Appears in Red Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs.

Supporting questions (1)
  1. Why does a shipping delay tie up a business’s cash and potentially increase interest costs?

    explainedRed Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs

Strategic oil reserves

Emergency oil stocks can be released to help bridge a supply interruption. Making stocks available is different from delivering them immediately, and reserves do not remove the disruption itself.

Appears in The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (1)
  1. How can emergency oil reserves help during a supply disruption, and what can they not do?

    explainedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

Stock markets and valuation

Stock market index

An index is a single number that tracks the prices of a chosen group of shares. It is used to describe how a market, or part of it, has moved.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day, How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse, The Nifty's September 2024 High: Why Prices Later Fell, SEBI's October 2024 Index Derivatives Rules, Explained, The April 2025 US Reciprocal Tariffs, Explained for India.

Supporting questions (9)
  1. What does a stock market index such as the Dow measure?

  2. What is the Sensex?

  3. What does a big fall in an index tell us?

    explainedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

    mentionedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

    explainedThe April 2025 US Reciprocal Tariffs, Explained for India

  4. What does a stock market index like the Sensex show?

  5. How is the percentage fall in an index calculated?

    illustratedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

  6. What is a stock market index and what does it track?

  7. What is a stock market index?

    explainedThe Nifty's September 2024 High: Why Prices Later Fell

  8. Why can two indices move by different amounts over the same months?

  9. Why can an index’s intraday high or low differ from its closing level?

    explainedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

Bull market

A bull market is a long period when share prices mostly rise. The term describes a trend and has no single official definition.

Supporting questions (2)
  1. What is a bull market?

  2. How long and how large must a rise be before it is called a bull market?

Discounting

Discounting converts future payments into a value today using a rate of return. A higher rate gives a lower value for the same future payments.

Supporting questions (2)
  1. Why does a lower safe interest rate raise what the same profit is worth?

  2. What does a simple profit-divided-by-rate valuation leave out?

Re-rating

A re-rating happens when investors pay a higher or lower price for the same profits because conditions around the business have changed.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day, The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (3)
  1. What is a re-rating of a share?

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

  2. Why can share prices rise before the economy or profits recover?

  3. How can a change in the earnings multiple move a share price even when profit stays unchanged?

    illustratedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

    explainedThe Nifty's September 2024 High: Why Prices Later Fell

Margin

The part of a purchase's value that a borrower must put in with their own money. A loan without margin lets the borrower take larger positions with less of their own cash.

Appears in How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse, SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (3)
  1. What is margin in a loan against shares?

  2. How does a margin deposit differ from the price paid for an option?

    explainedSEBI's October 2024 Index Derivatives Rules, Explained

  3. How can a demand for extra collateral force a trader to sell investments?

    explainedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

Carry-forward trading (badla)

In a carry-forward system, a trader defers settlement of a trade to a later date, with a financier supplying money or shares for a fee. The position depends on lenders being willing to keep funding it.

Supporting questions (1)
  1. How did carry-forward (badla) trading work in India?

Index options and premium

An index option is a contract whose value depends on a share index. The buyer pays a price, the premium, upfront; the contract's value can change quickly because it has a fixed life.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (2)
  1. How does an option buyer's premium work in a simple rupee example?

    illustratedSEBI's October 2024 Index Derivatives Rules, Explained

  2. Why can options carry high implicit leverage even when the buyer pays only a premium?

    explainedSEBI's October 2024 Index Derivatives Rules, Explained

Stock index futures

Stock index futures are contracts based on the future value of a share index. They let investors cut or add market exposure without trading each share.

Supporting questions (2)
  1. What are stock index futures and why were they used to cut exposure quickly?

  2. What is an index future, and how does it differ from owning the shares in the index?

Stop-loss order

A stop-loss order tells a broker to sell a share automatically if its price falls to a set level. When many holders use similar levels, their sales can arrive together.

Supporting questions (2)
  1. What is a stop-loss order?

  2. Why can many people holding the same sell rule push prices down together?

Price-to-earnings ratio

The P/E ratio is a share price divided by the company's profit per share. It shows how much investors pay for each rupee of yearly profit, and it is not a payback period.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day, The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (2)
  1. What does a P/E ratio measure?

    illustratedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

    explainedThe Nifty's September 2024 High: Why Prices Later Fell

  2. What does a P/E ratio of about 200 mean compared with 20?

Market bubble

A bubble is a period when prices rise far above what expected profits seem to support, often followed by a large fall. Whether a price is too high is a judgement made with hindsight.

Appears in The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (2)
  1. Why is a very high price risky when it rests on hoped-for future profit?

    mentionedThe Nifty's September 2024 High: Why Prices Later Fell

  2. Can a record index level alone prove that shares were overpriced?

    explainedThe Nifty's September 2024 High: Why Prices Later Fell

Foreign portfolio investor

A foreign portfolio investor (FPI) is a registered overseas investor that buys and sells listed Indian securities such as shares and bonds, without taking control of a company. Its net buying or selling is recorded in rupees and can move prices.

Appears in The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (2)
  1. What is a foreign portfolio investor, and why can its buying or selling affect Indian share prices?

    explainedThe Nifty's September 2024 High: Why Prices Later Fell

  2. How can heavy FPI selling affect both share prices and the rupee?

Herd behaviour in markets

Investors may buy or sell because others are doing so, rather than because of a company's earnings. Regulators have described such trading as sentiment driven.

Supporting questions (1)
  1. How can sentiment, rather than earnings, drive share prices?

Market capitalisation

Market capitalisation is the total market value of a company's listed shares, or of all shares on an exchange. It changes whenever share prices change.

Supporting questions (2)
  1. What is market capitalisation?

  2. How is a company's market capitalisation calculated, and what does a fall in it show?

Market expectations and surprises

Share prices usually reflect what investors broadly expect. A known outcome can still move prices if it differs from those expectations, so the surprise often matters more than the news itself.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day, How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse, The April 2025 US Reciprocal Tariffs, Explained for India, June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving.

Supporting questions (3)
  1. Why can share prices fall when a widely anticipated outcome actually happens?

    explainedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

  2. Why can a share fall after a company announces good results?

  3. Why can share prices change before reported business profits change?

    illustratedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

    illustratedThe April 2025 US Reciprocal Tariffs, Explained for India

    illustratedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

Volatility index (India VIX)

A volatility index, such as NSE's India VIX, is derived from Nifty option prices. It shows how much movement in the Nifty the market expects over the next 30 days; it does not predict direction.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day.

Supporting questions (2)
  1. What does a rise in India VIX show about expected market movement?

    explainedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

  2. What does a rise in the India VIX tell an investor, and what does it not tell?

Percentage loss and the gain needed to recover

A fall of a given percentage needs a larger percentage rise to return to the starting value. A 50 percent fall needs a 100 percent gain, for example.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day, The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (2)
  1. Why does a 78 percent fall need a gain of more than 300 percent to recover?

    illustratedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

  2. How is the percentage gain needed to recover a loss calculated?

    illustratedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

Diversification

Diversification means spreading money across different investments so that one disappointing holding does not decide the whole result. It reduces the effect of a single failure but cannot remove the risk of a broad market fall.

Supporting questions (6)
  1. Why does holding many different investments reduce the damage from one failure?

  2. Why does diversification not protect against a fall that hits the whole market?

  3. How does mixing Indian stocks, US stocks, gold and deposits spread risk?

  4. Why can a diversified portfolio still lose money?

  5. Why can one investment beat a diversified mix over a period?

  6. Why can diversification weaken when many markets fall together?

Derivative

A derivative is a contract whose value depends on something else, such as an index, a share or a commodity price. Futures and options are common examples, and they are traded in fixed lots.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (2)
  1. What does a derivative's value depend on, and why is it not owning the asset?

    explainedSEBI's October 2024 Index Derivatives Rules, Explained

  2. How can the same derivative be used to reduce risk or to take risk?

Call and put options

A call option gives the buyer the right, not the obligation, to buy at a fixed price by a set date; a put gives the right to sell. The buyer pays a premium, and the most the buyer can lose is that premium, while a seller can lose much more.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (3)
  1. Why is the buyer's maximum loss on an option limited while the seller's is not?

  2. What is the profit or loss on a call option at expiry for three different index levels?

  3. How do calls and puts differ, and why is getting the direction right not enough for a profit?

    illustratedSEBI's October 2024 Index Derivatives Rules, Explained

Initial public offering

An IPO is when a company first sells shares to the public and lists on an exchange. The issue price is set by the company and its bankers, and the listing price is then set by the market.

Supporting questions (2)
  1. How does a company raise money through an IPO?

  2. Why can a share list far above or below its issue price?

Dividend

A dividend is a share of a company's profit paid to shareholders. It is decided by the company and is not guaranteed.

Appears in The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (2)
  1. What is a dividend, and why is it not guaranteed?

    explainedThe Nifty's September 2024 High: Why Prices Later Fell

  2. How is dividend yield calculated?

Earnings per share

Earnings per share is a company's profit divided by its number of shares. It is the profit measure that the price-to-earnings ratio compares with the share price.

Appears in The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (2)
  1. How is earnings per share calculated?

  2. How do earnings per share and the share price together give the P/E ratio?

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

Mark to market

Marking to market means valuing a position at today's market price rather than its purchase price. Gains and losses then show up as prices move, even if nothing has been sold.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (2)
  1. What does valuing a holding at today's market price show that its purchase price does not?

    illustratedWhy Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run

  2. Why do futures traders have to settle gains and losses daily?

US stock market and the S&P 500

The S&P 500 tracks about 500 large US companies and is the common benchmark for the US stock market. Its returns for an Indian investor also depend on the rupee-dollar exchange rate.

Supporting questions (2)
  1. What does the S&P 500 track?

  2. Why can US and Indian stock markets move differently in the same year?

Implied volatility

Implied volatility is inferred from option prices and describes the size of price swings those prices allow for. It is not the actual percentage price change and does not predict direction.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day.

Supporting questions (1)
  1. How does implied volatility describe expected price swings rather than an actual price change?

    explainedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

Government policy and reform

Inflation

Inflation is the general rise in prices over time, often measured with a consumer price index. It reduces what a rupee can buy.

Appears in Why the RBI Raised Rates Off Cycle in May 2022, Red Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs.

Supporting questions (6)
  1. What is inflation and how is it measured?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

    explainedRed Sea Shipping Diversions 2024: How a Longer Route Raised Trade Costs

  2. Why does inflation reduce what a fixed deposit's interest can buy?

  3. How can a rise in oil prices feed into general consumer prices?

  4. How do yearly inflation rates combine over several years?

  5. Why is a national price index only a rough guide to one household’s costs?

  6. Why can wholesale and consumer inflation figures describe different price changes?

Industrial licensing

A licence is government permission to start, expand or change what a firm makes. Requiring licences limits how many firms can compete in an industry.

Supporting questions (2)
  1. What did India's 1991 industrial policy change about licensing?

  2. Why does a licence requirement limit competition?

Fiscal deficit

The fiscal deficit is the amount by which a government's spending exceeds its income in a year, so the gap must be borrowed. It is often stated as a share of GDP.

Supporting questions (1)
  1. What is a fiscal deficit?

Monetary policy

Monetary policy is how a central bank uses interest rates and the amount of money in the system to influence inflation and growth. In India, the RBI sets the repo rate as its main tool.

Appears in Why the RBI Raised Rates Off Cycle in May 2022.

Supporting questions (4)
  1. Why would a central bank raise interest rates when inflation is high?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

  2. How does a rate rise reach savers, borrowers and share prices?

    illustratedWhy the RBI Raised Rates Off Cycle in May 2022

  3. Why can higher interest rates restrain spending without directly replacing lost oil or food supply?

    explainedWhy the RBI Raised Rates Off Cycle in May 2022

  4. What does it mean when a central bank keeps its policy rate unchanged?

Gross domestic product

GDP is the total value of goods and services produced in a country in a period. Its growth rate is the usual measure of how fast the economy is expanding.

Supporting questions (2)
  1. What does GDP measure, and what does it leave out?

  2. How is the growth rate of GDP calculated?

Financial crises and leverage

Recession

A recession is a period when a country's economic activity falls, usually with rising unemployment. Official dating differs by country.

Supporting questions (2)
  1. How is a recession identified, and why do countries date it differently?

  2. Does a falling stock market mean a recession has started?

IMF stand-by arrangement

A stand-by arrangement is a loan agreement in which the International Monetary Fund lends to a member country with a financing programme attached. Amounts can exceed the usual access limits.

Supporting questions (1)
  1. What is an IMF stand-by arrangement and which countries used one in 1997?

Portfolio insurance

Portfolio insurance is a rule-based strategy that sells part of a portfolio as the market falls, aiming to limit losses. If many investors follow similar rules, their selling can add to a fall.

Supporting questions (1)
  1. How does portfolio insurance tell investors to sell as prices fall?

Hedge fund

A hedge fund is a privately run pool of money for wealthy people and large institutions, not sold widely to the public. It can use borrowing and varied strategies that ordinary mutual funds usually do not.

Supporting questions (1)
  1. What is a hedge fund, and how does it differ from a mutual fund?

Leverage

Leverage is using borrowed money to hold more assets than your own capital could buy. It magnifies gains and losses, so a small fall in asset prices can wipe out a large share of capital.

Appears in How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse, SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (3)
  1. What is leverage, and how is it measured as a ratio of assets to capital?

    illustratedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

    illustratedSEBI's October 2024 Index Derivatives Rules, Explained

  2. How can a small fall in asset prices wipe out a leveraged investor's own capital?

    illustratedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

  3. If an investor puts in ₹1 lakh and borrows ₹1 lakh, what share of their capital does a 10% asset fall wipe out?

Flight to quality

A flight to quality happens when investors avoid risk and move to assets that are safer and easier to sell. Gaps between safe and risky yields often widen as a result.

Supporting questions (2)
  1. What is a flight to quality, and what does it do to risk spreads?

  2. Why do investors move money to safer assets during a panic?

Fire sale

A fire sale is a rushed sale of assets at low prices, often by a seller under pressure to raise cash. It can push prices down further and strain other holders of similar assets.

Appears in How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse.

Supporting questions (2)
  1. Why do authorities worry about a fire sale of a failing fund's assets?

  2. How can forced selling push prices down and cause more forced selling?

    explainedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

Currency carry trade

A carry trade borrows in a currency with low interest rates and invests in assets that pay more. It earns the gap while the exchange rate holds, but a rise in the borrowed currency makes the loan costlier to repay.

Appears in How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse.

Supporting questions (3)
  1. What is a currency carry trade, and where does its profit come from?

    explainedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

  2. What happens to the cost of repaying a yen loan when the yen strengthens?

    illustratedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

  3. How is the net return on a carry trade calculated after borrowing costs?

    illustratedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

Hedging

Hedging means taking a second position that tends to gain when the first one loses. It reduces one risk, usually at a cost, and can leave other risks unchanged.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (4)
  1. How can an importer use a forward contract to fix the rupee cost of a dollar payment?

  2. Why does hedging usually cost something even when nothing goes wrong?

  3. How can an investor hedge currency risk on an overseas holding?

  4. Why does unhedged foreign-currency borrowing expose a borrower to exchange-rate changes?

Counterparty risk

Counterparty risk is the chance that the other side of a deal fails to pay what it owes. It matters most when many institutions owe each other at once.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (3)
  1. What is counterparty risk, and when does it spread beyond one firm?

  2. How does a clearing house reduce counterparty risk on an exchange?

    illustratedSEBI's October 2024 Index Derivatives Rules, Explained

  3. Why do a failing trading firm’s lenders and counterparties face losses?

Currency and the external sector

Exchange-rate depreciation

A currency depreciates when it buys less of another currency, so more units are needed to buy one dollar.

Appears in June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving.

Supporting questions (2)
  1. What does it mean when the rupee weakens against the dollar?

  2. How does a weaker rupee raise the rupee cost of imported oil?

    explainedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

Exchange-rate peg

A peg is a promise to keep a currency near a fixed rate against another currency. Small day-to-day movement can encourage borrowing without protection against a later fall.

Supporting questions (1)
  1. What is a currency peg and why can it encourage unprotected foreign borrowing?

Foreign-currency debt

Debt owed in another country's currency becomes heavier in local terms when the local currency falls. Borrowing without protection against this (unhedged) is riskier when it is short-term.

Appears in How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse.

Supporting questions (1)
  1. Why does a falling local currency make dollar debt harder to repay?

    illustratedHow Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse

Foreign-exchange reserves

Reserves are the foreign money a central bank holds. They are often compared with short-term foreign debt to judge how well a country can meet payments due soon.

Supporting questions (5)
  1. Why do analysts compare foreign-exchange reserves with short-term foreign debt?

  2. What are foreign-exchange reserves and why does a country hold them?

  3. What happens when a country's foreign-exchange reserves run low?

  4. Why do low foreign-exchange reserves matter for a country's imports?

  5. What can a central bank use foreign-exchange reserves for?

Current account deficit

The current account deficit is the gap between what a country spends abroad and what it earns abroad. It is usually compared with the size of the economy (GDP).

Supporting questions (3)
  1. What is a current account deficit?

  2. What is a current account deficit?

  3. How is a current-account deficit paid for?

Currency depreciation

A currency depreciates when it buys fewer units of another currency. It raises the local cost of anything owed in foreign money.

Supporting questions (1)
  1. How far did the rupee and other Asian currencies fall in 1997-98?

Devaluation of a currency

A government's decision to lower its currency's official value, so each unit of foreign currency costs more of the home currency. It tends to make imports dearer and exports cheaper.

Supporting questions (2)
  1. What is a currency devaluation?

  2. Why does a lower currency value make imports dearer and exports cheaper?

Balance of payments

The record of a country's payments to and receipts from the rest of the world. A balance of payments crisis means it is short of the foreign money needed to pay what it owes abroad.

Supporting questions (2)
  1. What is a balance of payments crisis?

  2. What does the balance of payments record, and why can it come under pressure?

Central bank currency intervention

A central bank selling or buying foreign currency from its reserves to influence its own currency's value. It can only be sustained while reserves last.

Supporting questions (1)
  1. How does a central bank use its reserves to hold up its currency?

Foreign direct investment

Foreign direct investment is money a foreign investor puts into a business in another country, often for a lasting ownership share. Rules usually set which industries it may enter and how large a stake is allowed.

Supporting questions (1)
  1. What foreign investment did India's 1991 industrial policy allow?

Exchange rate

An exchange rate is the price of one currency in another, such as rupees per US dollar. When it takes more rupees to buy a dollar, the rupee has weakened against the dollar.

Appears in How Cheap Borrowing in Japan Made the August 2024 Market Selloff Worse, June 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving, The 2026 Strait of Hormuz Oil Supply Disruption, Explained.

Supporting questions (4)
  1. If the rate moves from ₹83 to ₹85 per dollar, which currency has weakened?

  2. Who gains and who loses when the rupee weakens?

  3. How does the rupee-dollar rate change the rupee value of a dollar asset?

  4. How is a dollar import bill converted into rupees?

    illustratedJune 2025 Iran-Israel Conflict: Why Oil Rose While Tankers Kept Moving

    mentionedThe 2026 Strait of Hormuz Oil Supply Disruption, Explained

Currency risk in overseas investing

An investor in rupees who holds a dollar asset earns the asset return and the change in the exchange rate. A stronger rupee can cut or erase the gain from a foreign investment.

Supporting questions (3)
  1. How do a 10% dollar asset return and a 5% dollar gain combine into a rupee return?

  2. What happens to a dollar holding’s rupee value if the rupee strengthens?

  3. Why does holding US dollar cash earn only the exchange-rate movement?

Mutual funds

Mutual fund net asset value

A fund's net asset value per unit is the value of its assets minus liabilities, divided by the number of units. An administratively set repurchase price can differ from it.

Appears in Why Silicon Valley Bank Collapsed in 2023: Bond Losses and a Bank Run.

Supporting questions (3)
  1. How can a fund's repurchase price differ from its net asset value?

  2. How is a mutual fund's NAV calculated each day?

  3. Who pays the difference when units are repurchased above NAV?

Index fund

An index fund holds the shares in an index, such as the Nifty 50, in similar proportions. Its value rises and falls roughly with the index, less the fund's costs.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day, The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (2)
  1. What does an index fund hold, and why does its value follow the index?

  2. What happens to an index-fund investor's holding when the index falls 6% in a day?

    illustratedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

SIP and rupee-cost averaging

A systematic investment plan (SIP) invests a fixed amount at regular intervals. Because the same rupees buy more units when prices are low and fewer when high, the average cost per unit can differ from the average price.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day, The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (3)
  1. How many units does a fixed monthly SIP buy as the price changes?

  2. What does a market fall mean for an ongoing SIP, and what does it not guarantee?

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

  3. When does investing monthly beat or trail investing everything at once?

Portfolio and asset allocation

Asset classes

An asset class is a group of investments that behave in broadly similar ways, such as equities, gold, deposits and government bills. Each has its own sources of return and its own risks.

Supporting questions (2)
  1. What are the main asset classes, and how does each one earn a return?

  2. Why do equities, gold and deposits carry different kinds of risk?

Asset allocation

Asset allocation is how an investor divides money across asset classes. The split often matters more for the overall result than the choice of any single holding.

Supporting questions (3)
  1. What does it mean to split ₹1,00,000 across several investments?

  2. Why can the split between asset classes matter more than any single pick?

  3. How do percentage weights and rupee amounts describe the same allocation?

Rebalancing

Because holdings grow at different rates, a portfolio drifts away from its target split. Rebalancing sells some of what has grown and buys what has lagged to restore the target, usually at a cost.

Supporting questions (3)
  1. Why does a 40% holding no longer stay at 40% after the investments grow at different rates?

  2. What does it mean to restore your initial allocation once a year?

  3. What does rebalancing cost, and when might it not help?

Buy and hold

Buy and hold means investing once and leaving the holdings alone, so the weights drift with market moves. It avoids trading costs but lets the mix change on its own.

Supporting questions (2)
  1. What does it mean to buy and hold a portfolio?

  2. How do ending weights differ from starting weights under buy and hold?

Concentration risk

Concentration risk is the danger of having too much money in one investment, sector or country. A single bad outcome can then dominate the whole portfolio.

Supporting questions (3)
  1. What is concentration risk and how does it show up in a portfolio?

  2. What risk comes from holding only one country’s market?

  3. How can lending heavily to one group of borrowers expose a bank to large losses?

Risk and return

Investments with higher possible returns usually come with larger or less predictable losses. A higher past return does not mean lower risk, and a smooth balance does not mean no risk.

Supporting questions (2)
  1. Why do investments with higher possible returns usually come with larger possible losses?

  2. Why does a smooth balance not mean an investment is risk-free?

Correlation

Correlation describes how closely two investments move together. Combining holdings that do not always rise and fall at the same time is what makes diversification work.

Supporting questions (2)
  1. What does it mean for two investments to move together or apart?

  2. Why does combining investments that do not move together reduce the swings of the whole?

Investment horizon

The investment horizon is how long money stays invested. Over short horizons results vary widely, and the same mix can look very different over 1 year than over 15.

Supporting questions (2)
  1. Why can results differ so much over 1 year compared with 15 years?

  2. Why can the same allocation succeed in one period and disappoint in another?

Lump sum versus monthly investing

A lump sum invests all the money at the start, while monthly investing adds money over time. Money added later has less time to grow, so the two are not directly comparable.

Appears in The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (3)
  1. How does investing ₹1 lakh at once differ from adding ₹1,000 every month?

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

  2. Why does money added later earn less of the growth than the starting amount?

  3. Why is a monthly saving modelled from yearly data only an approximation of a real SIP?

Access and exit time

Different investments can be turned into cash at different speeds and costs. Quick access is separate from safety, because a fast sale can still be at a loss.

Supporting questions (3)
  1. How quickly can different investments be turned into cash, and at what cost?

  2. Why does quick access to money not protect it from loss?

  3. How can redemption restrictions delay access to money in a fund?

Returns and risk measures

CAGR

Compound annual growth rate is the steady yearly rate that would turn the starting amount into the ending amount. It smooths uneven years into one comparable figure.

Supporting questions (3)
  1. What does compound annual growth rate tell you about an investment?

  2. How do you calculate CAGR from a starting amount, an ending amount and the number of years?

  3. Why is CAGR not a fair measure when new savings are added along the way?

XIRR

XIRR measures the annualised return on money added at different dates. It is used instead of CAGR when contributions arrive over time, because new savings are not growth.

Supporting questions (2)
  1. What does XIRR measure that CAGR does not?

  2. Why do the dates of each contribution matter when working out a return?

Average return versus compound return

Gains and losses compound rather than cancel. A 10% gain followed by a 10% loss leaves less than the starting amount, so a simple average of yearly returns can overstate what an investor earned.

Supporting questions (2)
  1. Why does ₹1 lakh that gains 10% and then loses 10% end below ₹1 lakh?

  2. Why can the average of yearly returns overstate what an investor earned?

Total return versus price return

Price return counts only the change in an index or share price. Total return also counts dividends or interest reinvested, so it is higher when payouts are material.

Appears in Why Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day, The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (2)
  1. What is the difference between price return and total return?

    illustratedWhy Indian Shares Fell on 4 June 2024, the Lok Sabha Results Day

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

  2. Why does a price-only index understate an investor’s actual return?

Purchasing power

Purchasing power is what a sum of money can buy. Rupees from different years are not comparable until adjusted for the rise in prices between them.

Supporting questions (3)
  1. What does it mean that ₹1 lakh today buys less than ₹1 lakh did years ago?

  2. How do you convert a future sum into the rupees of a starting year?

  3. Can an investment grow in rupees and still lose buying power?

Drawdown

A drawdown is the fall from a previous peak to a later low. It shows how deep the losses went and how long recovery to the old peak took.

Appears in The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (3)
  1. What is a drawdown, and how is it measured from a previous peak?

    explainedThe Nifty's September 2024 High: Why Prices Later Fell

  2. How is the time to recover to an old peak measured?

  3. Why do yearly figures understate the real worst fall within a year?

Volatility

Volatility measures how widely returns swing from year to year, commonly as a standard deviation. A higher figure means a less predictable path, not necessarily a worse outcome.

Supporting questions (2)
  1. What does the standard deviation of yearly returns say about an investment?

  2. What do the worst year and the number of losing years show about risk?

Rolling returns

Rolling returns measure results over every possible start date for a fixed period, such as all 5-year windows. They show the range of outcomes rather than one lucky or unlucky stretch.

Supporting questions (3)
  1. What are rolling returns, and why look at every start year?

  2. What do the lowest, median and highest outcomes across windows show?

  3. Why do overlapping windows not count as independent experiments?

Backtesting and hindsight bias

A backtest replays history to see how a strategy would have done. Choosing the period afterwards flatters the result, and past outcomes do not forecast future ones.

Appears in The Nifty's September 2024 High: Why Prices Later Fell.

Supporting questions (3)
  1. What is a backtest, and what can it show?

  2. Why does choosing the period yourself make a result look better than it is?

    illustratedThe Nifty's September 2024 High: Why Prices Later Fell

  3. Why do past returns not predict future returns?

Transaction costs

Buying and selling usually involve brokerage, spreads, taxes and other charges. Small costs repeated over many trades reduce the return an investor actually keeps.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (2)
  1. What costs apply when buying or selling an investment?

    mentionedSEBI's October 2024 Index Derivatives Rules, Explained

  2. Why can small costs repeated over years noticeably reduce the final amount?

Taxes on investment returns

Interest, dividends and capital gains can be taxed differently, so returns before tax are higher than what an investor keeps. The rules depend on the asset, the holding period and the investor.

Appears in SEBI's October 2024 Index Derivatives Rules, Explained.

Supporting questions (2)
  1. Why is an investment’s return before tax higher than what the investor keeps?

  2. Why can interest, dividends and capital gains be taxed differently?