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Open Interest

Live Open Interest by Strike — Call and Put OI

Open interest is the count of contracts still outstanding at a strike. Read strike by strike it shows where option writers have committed capital, which is what turns particular strikes into the levels a session keeps returning to.

Call and put open interest are shown against each other from a common baseline, so the balance at every strike is visible at a glance rather than inferred from two separate columns. The spot line sits on the same axis, which is what makes the heavy strikes above and below price meaningful instead of abstract.

Long-form guides to every number on this page, with worked examples.

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NIFTY right now

The Open Interest hub opens on NIFTY. Pick any other symbol from the directory below.

NIFTY call and put open interest by strike — 8 Sep 2026 expiry as of market close, 8 Sep 2026

Strike	Call OI	Put OI	Put minus call	Side
23,400	3,30,980	65,12,220	+61,81,240	Put-heavy
23,450	3,68,875	62,86,865	+59,17,990	Put-heavy
23,500	13,14,040	98,80,455	+85,66,415	Put-heavy
23,550	19,66,900	1,06,94,905	+87,28,005	Put-heavy
23,600	80,60,780	2,04,54,070	+1,23,93,290	Put-heavy
23,650 ATM	3,02,20,385	87,51,275	−2,14,69,110	Call-heavy
23,700	1,99,33,225	43,37,320	−1,55,95,905	Call-heavy
23,750	1,20,39,950	14,15,375	−1,06,24,575	Call-heavy
23,800	1,20,00,235	24,62,525	−95,37,710	Call-heavy
23,850	66,82,000	12,16,280	−54,65,720	Call-heavy
23,900	77,11,275	11,25,995	−65,85,280	Call-heavy

All Open Interest symbols, A-Z216

All 216 symbols

Every NSE and BSE F&O underlying with its own Open Interest page.

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C

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H

I

J

K

L

M

N

O

P

R

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Open Interest — frequently asked questions6

What does open interest actually measure?

Open interest is the number of contracts at a strike that have been opened and not yet closed or expired. It rises when a buyer and a seller open a new position between them, and falls when positions are closed. Unlike volume, which resets every session and counts all trading activity, open interest carries across sessions and reflects commitment that is still outstanding.

How is open interest different from volume?

Volume counts every contract traded during the session, including positions opened and closed within the same day. Open interest counts only what remains open at the end of it. A strike can show heavy volume with almost no change in open interest, which means the day's activity was largely intraday churn rather than fresh positioning.

Does high open interest at a strike act as support or resistance?

High open interest marks where positioning is concentrated, and those strikes often behave as reference levels — heavy call open interest above spot is commonly read as resistance and heavy put open interest below spot as support. This is a crowding observation, not a rule. Levels can and do break, usually when that open interest unwinds quickly.

Is the data on Sahi live or delayed?

Quotes stream live from the exchange feed during market hours through a WebSocket connection, so open interest, premium and Greeks update continuously rather than on a fixed refresh. If the live feed goes quiet the terminal falls back to periodic snapshot polling automatically. Outside market hours the last completed session is shown.

Which underlyings does Sahi cover?

Sahi covers NSE index options including NIFTY and BANKNIFTY, and the full list of NSE stocks available in the futures and options segment, alongside BSE index options. Every tool works on whichever underlying is selected in the instrument picker, and the selection carries across tools as you move between them.

Do I need an account to use Sahi option tools?

No account or login is needed. Every tool on this site runs entirely in your browser and is free to use. Nothing you select is stored on a server, and no order can be placed from here — Sahi is an analysis terminal, not a trading or execution platform.

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