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Glossary

Market terms in plain words

29 terms, each with the course that teaches it.

Ask
The lowest price at which a seller is currently willing to sell.
Example: If the ask is ₹500.10, buying at market costs about ₹500.10.
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ATR (Average True Range)
A measure of how much an instrument typically moves in a period, used to compare volatility and to set a stop distance.
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Bid
The highest price at which a buyer is currently willing to buy.
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Circuit limit
A limit on how far a price can move in one day before trading in it is paused or restricted.
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Contract note
The record your broker issues for the day's trades, listing every trade and every charge.
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Delta
How much an option's price is expected to change for a one-unit move in the underlying price.
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Demat account
The account at a depository where your shares are held electronically.
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Drawdown
The fall from a peak in account value to a later low, usually shown as a percentage.
Example: Falling from ₹1,00,000 to ₹80,000 is a 20% drawdown.
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Expectancy
The average result per trade, often in R. Expectancy = hit rate × average reward − miss rate × average risk.
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Expiry
The date on which a futures or options contract ends.
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Implied volatility
The market's estimate of future volatility, inferred from option prices.
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Leverage
Controlling a larger position than your own money by using a deposit (margin). It magnifies results in both directions.
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Limit order
An order to buy or sell at a set price or better. It may not be filled.
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Lot size
The fixed quantity in one futures or options contract.
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Margin
A deposit held against a leveraged position. It is not a fee, and the amount at risk can exceed it in some products.
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Mark-to-market (MTM)
Daily settlement of price differences on open futures positions.
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Market order
An order to buy or sell immediately at the best available price.
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Open interest
The number of outstanding derivative contracts that have not been closed or settled.
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Position sizing
Deciding how many units to trade so that a stopped-out trade costs only the amount you chose to risk.
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Premium
The price of an option, paid by the buyer to the seller.
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R-multiple
A trade's result divided by the amount risked on it. A 2R result is twice the amount risked.
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Slippage
The difference between the price you expected and the price you actually got.
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Spread
The gap between bid and ask. It is a cost of every trade.
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Stop-loss
An order or plan that closes a position at a set price level. It limits risk but does not remove it: a gap can fill worse.
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Strike price
The fixed price at which an option's holder may buy (call) or sell (put) the underlying.
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STT (Securities Transaction Tax)
A tax levied by the government on certain securities transactions.
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Support and resistance
Zones where price has previously stopped falling (support) or rising (resistance).
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Theta
How much an option's price is expected to fall as time passes, all else equal. Also called time decay.
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Vega
How much an option's price is expected to change when implied volatility changes.
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