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Learn options trading, the Indian way

Short guides on how index options work on NSE and BSE: what they cost, when they expire and where the risks are. Education only, no tips.

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What options are, how they expire and what they cost in India.

Options guides

Greeks, volatility, the option chain, open interest and margin.

Option Greeks explained: delta, gamma, theta, vega and rho

What each Greek measures, in rupees per Nifty lot, with one worked example that ties them together.

9 min read

Option delta explained, in rupees per lot

What delta means for a Nifty option, how it changes with strike and time, and how traders use it to think about hedging.

7 min read

Theta and time decay in weekly options

How time decay works on Nifty weekly options, why it speeds up as Tuesday expiry nears, and what that means for buyers and sellers.

7 min read

Implied volatility and India VIX explained

What implied volatility is, how it moves an option's premium, and what India VIX measures (and does not).

8 min read

How to read an option chain on NSE

Every column of the NSE option chain explained: OI, change in OI, volume, IV, LTP, bid and ask, and the shaded in-the-money strikes.

8 min read

Open interest explained: OI, volume and buildup

What open interest counts, how it differs from volume, and what long buildup, short buildup, short covering and long unwinding mean.

7 min read

Put-call ratio (PCR) explained

How PCR is calculated from open interest or volume, how to read it, and why it is not a trading signal on its own.

6 min read

Max pain explained: how it is calculated and its limits

What the max pain strike is, how to calculate it from an option chain step by step, and why it is a weak predictor of where expiry settles.

6 min read

ITM, ATM and OTM options: moneyness explained

What in the money, at the money and out of the money mean for calls and puts, with a Nifty example and how moneyness changes premium and risk.

6 min read

Option premium: intrinsic value and time value

How an option premium splits into intrinsic and time value, what drives each part, and how both change towards expiry.

6 min read

Margin for option selling in India: SPAN, exposure and the 50% cash rule

How margin for selling options is set (SPAN plus exposure), peak margin rules, the extra ELM on expiry day, and pledging shares under the 50% cash rule.

9 min read

Physical settlement of stock options in India

Why NSE stock options settle in shares, what happens to an in-the-money option at expiry, why margins rise in expiry week, and the STT on exercise.

8 min read

Tax on F&O trading

How F&O income is taxed, turnover, audit and filing.