NIFTY Open Interest Mastery

How Institutions Move Markets Through OI Buildup

Open interest is the silent footprint of smart money.
When CE OI jumps 2M contracts at 22500, institutions are betting bullish.
When PE OI adds 3M at same strike, someone is protecting downside.

The OI Formula

OI change = New contracts opened - Closed contracts
Rising OI + Rising Price = Trend confirmation
Rising OI + Falling Price = Distribution happening

PCR Divergence Strategy

PCR > 1.2 = Oversold, bounce setup
PCR < 0.8 = Overbought, short setup
Divergence between PCR and price = Reversal signal

Real NIFTY Example

Date: 22-Jul-2026
NIFTY: 22,450
22500 CE OI: +2.1M (bullish)
22500 PE OI: +3.4M (support)
PCR: 1.62
Max Pain: 22,400
Action: Buy 22500 CE on dips, SL 22,350

Daily Routine

1. 9:15 AM: Check pre-market OI buildup
2. 10:30 AM: Identify highest OI strikes
3. 1:00 PM: Track OI changes mid-session
4. 3:30 PM: Final OI analysis for next day

Shakti Tiwari | optiontradingwithai.in | Sources: NSE, Dhan API