Sensex Expiry Today, 12 November 2026: What the Sensex Options Data Shows on BSE Weekly Expiry Day, and How Traders Commonly Think About the Risks

Sensex expiry today falls on Thursday, 12 November 2026, when weekly Sensex options on BSE expire at 3:30 pm. The index closed the previous session at 81,879.40, up 772.75 points, so traders enter expiry day after a strong rally. This note explains the contract details, the options data from 11 November, the risks specific to expiry day and how traders commonly frame their decisions. It is educational and is not trade advice.

The data below is from Quantsapp at 3:40 pm on 11 November and will have changed by today's session. Check BSE for contract details and the Sensex page for the live level. The Nifty 50 closed at 25,255.05, up 210.40 points, and its weekly expiry is on Tuesday, with the next one on 17 November.

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Sensex Expiry Today: Contract Facts

Item	Detail	Note
Sensex expiry today: weekly expiry day	Thursday, 12 November 2026, 3:30 pm	BSE weekly contract
Sensex expiry today: lot size	20	Value of one lot at 81,879.40 is about Rs 16.4 lakh (my arithmetic)
Sensex expiry today: previous close	81,879.40, up 772.75	11 November 2026
Sensex expiry today: nifty weekly expiry	Tuesday; next on 17 November	NSE contract
Sensex expiry today: sensex monthly expiry	26 November 2026	BSE contract

Contract value matters because a single lot controls a large notional exposure, even when the premium paid looks small. Exchanges revise lot sizes and expiry days from time to time, so confirm the current rules on the BSE website before placing any order.

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Sensex Options Data from 11 November

Measure	Reading	How to read it
Sensex expiry today: at-the-money strike	81,700	Closest strike to the index
Sensex expiry today: ATM straddle premium	Rs 859.85, about 1.1% of the index	Market-implied expected move; about Rs 17,197 per lot (my arithmetic)
Sensex options: implied volatility	25.5%	Option prices imply large swings
Sensex options: put call ratio	0.70	More call than put open interest
Sensex options: max pain	81,500	Other timestamps show 80,500, 81,800 and 82,200
Sensex options: highest call open interest	85,000	Often read as resistance
Sensex options: highest put open interest	80,000	Often read as support

The straddle price implies the market expects roughly a 1.1% move by expiry, which is about 900 points from the 81,700 strike. The max pain level shifted across the day, from 80,500 to 82,200 in different snapshots, so I would not treat any one figure as a target. Open interest levels at 85,000 and 80,000 are far from the index, so they say little about the last few hours.

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Expiry-Day Risks and How Traders Commonly Frame Them

Risk	What happens	How traders commonly respond
Rapid time decay	Option premiums lose value fast in the last hours	Avoid holding bought options without a clear plan
Sharp swings	Index can move hundreds of points within minutes	Use position sizes that a full loss would not damage
Wide spreads	Out-of-the-money options can be thin	Check liquidity and use limit orders
Gap risk on selling	Sellers face large losses if the index jumps	Prefer defined-risk structures and set exit rules before entry
Margin and charges	Margins rise on expiry day	Check margin requirements before trading

These are general risk-management habits, not a strategy to follow. Sensex options are a leveraged product, and sellers of options can lose far more than the premium they collect. Univest does not recommend any security or trade.

Conclusion

Sensex expiry today on 12 November 2026 comes after the index rose 772.75 points to 81,879.40. The 11 November data shows an implied move of about 1.1%, IV of 25.5% and a PCR of 0.70, but max pain readings vary. Read the contract rules and consult a SEBI-registered adviser before trading.

Frequently Asked Questions on Sensex Expiry Today

When is Sensex expiry today?

Ans. Weekly Sensex options on BSE expire on Thursday, 12 November 2026, at 3:30 pm. The Sensex monthly expiry is on 26 November 2026.

What is the lot size for Sensex options?

Ans. The lot size is 20. At the previous close of 81,879.40, one lot has a notional value of about Rs 16.4 lakh by my arithmetic. Confirm the current lot size with BSE.

What did the Sensex options data show on 11 November?

Ans. Quantsapp showed an at-the-money strike of 81,700, a straddle premium of Rs 859.85, IV of 25.5%, PCR of 0.70 and max pain of 81,500. The data changes through the day.

What is max pain and can I rely on it?

Ans. Max pain is the strike where option buyers collectively lose the most at expiry. Snapshots on 11 November gave 80,500, 81,500, 81,800 and 82,200, so it is not a reliable target.

What does a PCR of 0.70 mean?

Ans. It means open interest in puts is about 70% of open interest in calls. Traders read it as a sentiment gauge, but it does not predict direction.

When does the Nifty weekly expiry fall?

Ans. Nifty weekly options expire on Tuesdays, so the next one is on 17 November 2026. Sensex weekly options expire on Thursdays.

Why is expiry day risky for Sensex options?

Ans. Premiums decay quickly, spreads can widen and the index can swing sharply in minutes. Leverage amplifies both gains and losses.

Is there a safe trading strategy for Sensex expiry?

Ans. No strategy removes risk, and Univest does not recommend any trade. Understand the contract, size positions carefully and consult a SEBI-registered adviser.