IDEA gamma exposure, walls and max pain for 9 Oct 2026
Source: NSE end-of-day data, 8 Oct 2026. End of day, not live. Not investment advice.
IDEA levels for the session of 9 Oct 2026, from the 8 Oct 2026 close of 12.8: call wall 14, put wall 13, max pain 14 for the 27 Oct 2026 expiry, put/call OI ratio 0.48, net GEX ₹18.5 cr per 1% move.
- Close
- 12.8
- 8 Oct 2026
- Call wall
- 14
- +9.37%
- Put wall
- 13
- +1.56%
- Gamma flip
- none
- no zero crossing within 10% of the close
- Max pain
- 14
- Tue 27 Oct 2026 expiry
- PCR (OI)
- 0.48
- nearest 0.51
- Net GEX
- ₹18.5 cr
- per 1% move
Sign convention on screen: Dealers long calls, short puts. Under the other reading (option writers short every option), net GEX is -₹77.1 cr per 1% move and there is no gamma flip. Why both are shown.
Gamma exposure by strike
Open interest and OI change by strike
| Strike | Call OI | Put OI | Call OI chg | Put OI chg | Call GEX | Put GEX | Net GEX |
|---|---|---|---|---|---|---|---|
| 13 | 27,54,64,650 | 21,28,52,550 | +1,69,39,575 | -47,17,350 | ₹12.7 cr | -₹9.9 cr | ₹2.8 cr |
Strike by expiry heatmap
| Strike | Tue 27 Oct 2026 | Mon 23 Nov 2026 |
|---|---|---|
| 13 | ₹2.4 | ₹0.33 |
| 12 | -₹3.4 | -₹0.14 |
Expiries
| Expiry | Days | Lot size | Call OI | Put OI | PCR | Max pain |
|---|---|---|---|---|---|---|
| Tue 27 Oct 2026 | 19 | 71475 | 1,76,59,32,825 | 89,16,50,625 | 0.51 | 14 |
| Mon 23 Nov 2026 | 46 | 71475 | 14,72,38,500 | 3,43,79,475 | 0.23 | 13 |
| Tue 29 Dec 2026 | 82 | 71475 | 75,76,350 | 5,71,800 | 0.07 | 12 |
Wall migration
| Date | Close | Call wall | Put wall | Gamma flip | Max pain | PCR | Call OI chg | Put OI chg |
|---|---|---|---|---|---|---|---|---|
| 8 Oct 2026 | 12.8 | 14 | 13 | n/a | 14 | 0.48 | +1,53,67,125 | -71,475 |
| 7 Oct 2026 | 13.18 | 14 | 14 | n/a | 14 | 0.49 | -2,05,13,325 | -32,87,850 |
| 6 Oct 2026 | 13.21 | 14 | 14 | n/a | 14 | 0.48 | +6,76,86,825 | -44,31,450 |
Method
Implied volatility from settlement prices, carry from put-call parity, risk-free rate 5.5%. 40 contracts used, 0 skipped with no solvable volatility, 0 expiring on the trade date left out. GEX is in ₹ crore per 1% move. Full method and sign convention.
Archive: 3 sessions stored since 6 Oct 2026, free, no account.