Open Interest Change(OI Change)

What Open Interest Change Means

Open Interest Change is the difference between current open interest and a prior reference point (yesterday's close, or the start of the session). While absolute OI shows where positions sit, the change shows what traders are doing right now. Rising OI means new contracts are being opened; falling OI means existing positions are being closed.

This makes OI change the more actionable signal — it captures the flow of fresh money rather than the static stock of old positions.

Reading OI Change with Price

Combining OI change with price movement reveals positioning intent. Price up + OI up = long buildup (bullish conviction). Price down + OI up = short buildup (bearish conviction). Price up + OI down = short covering (bears exiting). Price down + OI down = long unwinding (bulls exiting). These four quadrants are the core of futures and options flow analysis.

OI Change in the Indian Market

In Nifty and BankNifty, intraday OI change at key strikes shows where writers are adding or pulling protection, often signalling support and resistance shifts before price confirms them. Sudden OI build at a strike can mark a new pin level into expiry. Quintal Mind streams live OI change across the full chain so these flows are visible as they happen.

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