Open Interest (OI) Data Today

Call and put open interest by strike for every NSE F&O index and stock, with the change since the last session and the support and resistance it points to. NIFTY OI data is below; pick any symbol for its own chart and every expiry.

NIFTY open interest today · 19 Oct 2026 expiry

As of 15 Oct 2026, 11:10 IST · change vs 14 Oct 2026, 16:45 IST

Resistance · call OI above23,00093.2 L calls open

Support · put OI below22,7001.30 Cr puts open

Total call OI11.98 Cr−2.10 Cr today

Total put OI19.53 Cr+7.48 Cr today

PCR (OI)1.63all strikes, this expiry

Max pain22,850see the payout chart →

The biggest call OI above the price sits at 23,000 (93.2 L) and the biggest put OI below it at 22,700 (1.30 Cr): the market's resistance and support for this expiry. PCR is 1.63. Since the last session, call writers added most at 23,300 (+14.3 L) and put writers at 22,700 (+88.4 L).

Open interest by strike

Calls and puts at each strike · change since 14-Oct-26 16:45. R = biggest call OI above the price (resistance), S = biggest put OI below it (support).

23,6509.7 L7.0 K+2.7 L+650

23,60033.6 L36.1 K−8.9 L−715

23,55012.4 L40.2 K−2.8 L−2.7 K

23,50075.4 L2.7 L−22.6 L−9.4 K

23,45015.5 L7.0 K+99.5 K+1.4 K

23,40051.5 L1.6 L+12.2 L+20.5 K

23,35021.1 L14.8 K+3.4 L+6.6 K

23,30062.8 L2.0 L+14.3 L+63.0 K

23,25028.8 L48.6 K+9.6 L+14.9 K

23,20068.3 L4.5 L−8.7 L+3.5 L

23,15024.8 L1.0 L+3.7 L+75.7 K

23,10057.6 L8.2 L+6.0 L+5.8 L

23,05026.1 L5.2 L+3.2 L+4.4 L

23,000R93.2 L38.5 L−19.8 L+29.8 L

22,95041.5 L26.8 L+10.0 L+25.1 L

22,90066.0 L81.6 L+5.7 L+76.6 L

22,85024.7 L44.5 L−6.8 L+41.0 L

22,80047.6 L1.03 Cr−23.4 L+87.9 L

22,75023.4 L72.4 L−18.3 L+64.3 L

22,700S39.4 L1.30 Cr−51.1 L+88.4 L

22,65014.5 L51.8 L−15.7 L+31.7 L

22,60026.9 L90.3 L−17.7 L+36.0 L

22,5507.1 L39.4 L−6.4 L+13.3 L

22,50024.5 L1.17 Cr−6.6 L+48.4 L

22,4503.1 L28.0 L−85.0 K+6.4 L

22,4009.0 L57.1 L−1.5 L+18.1 L

22,3501.9 L26.6 L−22.3 K+9.5 L

22,3005.5 L56.9 L−3.6 L+11.0 L

22,25080.4 K30.4 L−1.6 K+11.0 L

22,2002.8 L52.6 L−1.5 L+4.1 L

22,15040.5 K26.7 L−975+9.9 L

20,5002.6 K29.5 L0−7.9 L

Call OICall addedCall unwoundPut OIPut addedPut unwoundR resistanceS support

Full NIFTY open interest: OI table and every expiry →OI from any time today and strike PCR in the app →

Bank Nifty and other index OI data

BANKNIFTY open interest27 Oct expiryResistance56,000Support55,000Future 55,898PCR 1.07As of 15 Oct 2026, 11:10 IST · full chart →FINNIFTY open interest27 Oct expiryResistance26,000Support24,900Future 25,252PCR 0.83As of 15 Oct 2026, 11:10 IST · full chart →MIDCPNIFTY open interest27 Oct expiryResistance14,500Support13,000Future 13,841PCR 0.97As of 15 Oct 2026, 11:10 IST · full chart →

Index open interest

NIFTYNifty 50 BANKNIFTYNifty Bank FINNIFTYNifty Financial Services MIDCPNIFTYNifty Midcap Select NIFTYFPINifty FPI 150 NIFTYNXT50Nifty Next 50

Stock open interest 213

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What is open interest?

Open interest is the number of option contracts open at a strike - written and not yet closed or expired. Unlike volume, which counts every trade, it only rises when a new position is opened and only falls when one is closed. That makes it the best record of where positions actually sit.

How to read the OI chart

Each strike is a row with two bars, call open interest and put open interest, highest strike on top. The darker part of a bar was added today and a hollow part was unwound; switch to "Change in OI" to see only today's change. Long call bars above the price are the call wall - read as resistance; long put bars below it are the put wall - read as support. A bar that grew today is a level being built; one that shrank is being given up.

Call vs put OI and the change in OI

The totals tell you the balance: the put-call ratio (PCR) is total put OI over total call OI, and above 1 means writers are selling more puts than calls. The change in OI tells you what happened today - fresh call writing above the price caps rallies, fresh put writing below it supports dips, and unwinding at a strike weakens that level. Read it with price, max pain and the option chain.

On today's NIFTY data the call wall is at 23,000 and the put wall at 22,700, with the future at 22,920.30 and a PCR of 1.63. Call OI changed −2.10 Cr and put OI +7.48 Cr since the last session.

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Frequently asked questions

What does NIFTY open interest show today?

For the 19 Oct 2026 expiry the most call OI is at 23,000 (93.2 L calls, read as resistance) and the most put OI at 22,700 (1.30 Cr puts, read as support), with a put-call ratio of 1.63 - as of 15 Oct 2026, 11:10 IST.

What is open interest in options?

Open interest is the number of option contracts open at a strike - written and not yet closed or expired. It rises when new positions are opened and falls when they are closed, unlike volume, which counts every trade.

How do traders find support and resistance from open interest?

The strike with the highest call open interest above the price is read as resistance, and the one with the highest put open interest below it as support, because option writers defend the strikes they have sold.

What is the difference between OI and change in OI?

OI is the total open at a strike right now; change in OI is how much was added or unwound since the previous session, which shows where fresh positions are being built today.

How do you read call vs put OI?

Compare the two sides strike by strike and in total. More put OI than call OI (PCR above 1) is usually read as writers supporting the market; more call OI as writers capping it. Where both are large at the same strike, the market expects the price to stay near it.

What do rising price and rising OI mean?

In futures, price up with OI up is a long build-up, price down with OI up a short build-up, price up with OI down short covering and price down with OI down long unwinding. In options, rising OI at a strike means writers are adding positions there.

Which symbols have open interest data on Quantsapp?

All 6 NSE F&O indices and 213 F&O stocks, for every open expiry, updated every minute in market hours.

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Data is for information only and is not investment advice. Derivatives trading carries substantial risk. Disclaimer