Index OI analysis
| Strike | Side | What happened | OI now | OI change | Volume | Premium |
|---|
How to read this page
- Raw vs weighted PCR — weighted PCR weights each strike by premium, which damps far-OTM noise.
- Total OI by strike — where call and put OI concentrate; read with max pain.
- Buildup — LONG BUILDUP (price up, OI up), SHORT BUILDUP (price down, OI up), SHORT COVERING (price up, OI down), LONG UNWINDING (price down, OI down).
- Intraday OI and max pain — how both moved through the session.
Methodology & data
Buildup and activity are measured against today's open — the session's first captured snapshot, not a fixed reference point. Weighted PCR weights each strike's OI by its own premium. All figures update live from the AngelOne/NSE feed during market hours.
What is the difference between raw PCR and weighted PCR?
Raw PCR is total put OI divided by total call OI, treating every strike equally. Weighted PCR weights each strike's OI by its own premium, reducing the influence of deep out-of-the-money strikes that carry large OI but little premium.
What does "long buildup" mean?
Price rising alongside rising open interest — new long positions being added, not just existing shorts covering. The opposite combination (price falling, OI rising) is "short buildup."
What is max pain?
The strike price at which option writers as a group would owe the least at expiry — often watched as a magnet level, though it's not a guarantee of where price will settle.
Which indices are covered?
NIFTY, BANKNIFTY, SENSEX, FINNIFTY, MIDCPNIFTY and BANKEX — switch between them using the selector above.