NIFTY 50 lot size and expiry day

Lot size, expiry and freeze quantity are read from the exchange's contract list, refreshed every six hours; last read 25 Oct 2026. The strike step is DeltaK's own engine configuration.

The NIFTY 50 lot size last changed from 75 to 65, for contracts expiring from 6 Jan 2026 (NSE circular NSE/FAOP/70616 of 3 Oct 2025).

Next NIFTY 50 expiries

About NIFTY 50

NSE's flagship broad-market index of the 50 largest, most liquid listed Indian companies by free-float market cap, across sectors. The single most-traded index options contract in the world by volume for several years running.

• Sitting across the largest names in every major sector rather than concentrated in one, NIFTY's realized volatility tends to run lower than BANKNIFTY's. A single sector's earnings surprise or rate-policy reaction rarely moves the whole 50-stock basket as hard as it moves a bank-only index.
• That lower volatility is exactly why NIFTY is the more common home for defined-risk, range-bound structures like iron condors and iron butterflies. The wider basket smooths out single-stock noise, which tends to make wall migration (Aegis, Zenith) a cleaner signal than it is on a narrower, more sector-concentrated index.
• Being the deepest and most liquid contract on the exchange also means the tightest bid-ask spreads on the chain, a quantifiable cost saving for any strategy with several legs, since each leg's slippage compounds across the position.

Questions

What is the NIFTY 50 lot size?

One NIFTY 50 options or futures lot is 65 units, as of 25 Oct 2026.

When does NIFTY 50 expire?

NIFTY 50 weekly options expire every Tuesday, and the monthly contract on the last Tuesday of the month. The next expiry is 27 Oct 2026. When the exchange is shut on the usual day, that expiry moves to the trading day before it.

When did the NIFTY 50 lot size last change?

The NIFTY 50 lot size last changed from 75 to 65, for contracts expiring from 6 Jan 2026 (NSE circular NSE/FAOP/70616 of 3 Oct 2025).

What is the NIFTY 50 freeze quantity?

3,510 units (54 lots). The exchange rejects a single order larger than this, so a bigger position is placed as several orders.

Other Indian F&O indices