Expiry day
What is expiring, and where the writers sit
The nearest contract expires in 12 sessions — this page is arranged for that session, not for today.
as of Thu 15 Oct 15:30 option chain · index close Thu 15 Oct 2026
BANKNIFTY
CSV- expires
- Tue 27 Oct 2026 · monthly
- sessions to go
- 12
- where it closed
- 55,810.50
- at the money
- 55,900
- heaviest calls
- 56,000
- heaviest puts
- 55,000
- most value expires at
- 55,800
- put-call ratio
- 1.03
Open interest by strikeMonthly expiry · Tue 27 Oct · 12 days to go · PCR 1.03
The heaviest strikes and the point where most value expires are where positions SIT. This desk tested whether they act as barriers and the answer came back negative, which is written up in full.
What expiry day is, and is not
An Indian index option settles in cash against a level computed from a window near the close, so no single print decides what every contract pays. Time value that was worth something on Monday is worth nothing by the afternoon — which is most of what traders describe as expiry behaviour.
How settlement worksFor NIFTYthe timeframes are not reading the same way; day falling; week rising; month sidewaysfalling