What is Open Interest (OI) in options?

Open Interest (OI) is the total number of outstanding options contracts that have not been settled or closed. Rising OI indicates new money entering a position; falling OI means positions are being unwound.

How do I read Nifty OI data for trading?

High call OI at a strike acts as resistance; high put OI acts as support. When OI builds at a strike alongside rising price, it signals strong conviction. Sudden OI drops may indicate large players exiting.

What does rising OI with falling price mean?

Rising OI with falling price typically indicates fresh short selling — a bearish signal. Conversely, rising OI with rising price suggests fresh buying — a bullish signal. This is the classic OI-price analysis framework.

Live Nifty Open Interest (OI) Analysis & Option Chain

Settings

Date

Index

Expiry

Total Call OI

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Total Put OI

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Spot —

Call OI

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Put OI

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Free NIFTY Open Interest (OI) Analysis — Live

The ultimate tool for OI analysis. Real-time visualization of NIFTY Call and Put Open Interest positioning. Track intraday institutional momentum, locate key support & resistance walls, and monitor OI-based market sentiment. View all OI charts on the OI Data Hub.

NIFTY OI Analysis Modes

Switch between OI mode (total outstanding contracts — highest Call OI = resistance, highest Put OI = support), Volume mode (live intraday activity), and PCR mode (Put-Call Ratio trend for market sentiment).

NIFTY OI — Related Tools