SBIN 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.
SBIN levels for the session of 9 Oct 2026, from the 8 Oct 2026 close of 940.17: call wall 960, put wall 940, gamma flip 919 (the close sat above it), max pain 980 for the 27 Oct 2026 expiry, put/call OI ratio 0.76, net GEX ₹39.5 cr per 1% move.
- Close
- 940.17
- 8 Oct 2026
- Call wall
- 960
- +2.11%
- Put wall
- 940
- -0.02%
- Gamma flip
- 919
- Max pain
- 980
- Tue 27 Oct 2026 expiry
- PCR (OI)
- 0.76
- nearest 0.77
- Net GEX
- ₹39.5 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 -₹356 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 |
|---|---|---|---|---|---|---|---|
| 900 | 3,61,500 | 19,97,250 | +42,750 | +1,40,250 | ₹1.7 cr | -₹9.2 cr | -₹7.5 cr |
| 910 | 1,29,000 | 6,66,750 | +68,250 | +87,000 | ₹0.73 cr | -₹3.8 cr | -₹3 cr |
| 920 | 4,71,750 | 13,71,750 | +1,60,500 | -12,750 | ₹3.1 cr | -₹8.9 cr | -₹5.8 cr |
| 930 | 5,73,000 | 11,81,250 | +1,83,000 | +78,000 | ₹4.2 cr | -₹8.6 cr | -₹4.4 cr |
| 940 | 11,67,000 | 29,04,750 | +5,83,500 | +2,63,250 | ₹8.8 cr | -₹21.9 cr | -₹13.1 cr |
| 950 | 31,29,000 | 23,32,500 | +11,91,000 | +21,750 | ₹23.9 cr | -₹17.8 cr | ₹6.1 cr |
| 960 | 47,66,250 | 24,96,750 | +7,23,750 | -1,23,750 | ₹34.6 cr | -₹18.1 cr | ₹16.5 cr |
| 970 | 43,74,750 | 24,19,500 | +43,500 | -48,750 | ₹29.4 cr | -₹16.3 cr | ₹13.1 cr |
| 980 | 38,49,750 | 21,24,000 | +2,05,500 | -15,000 | ₹22.1 cr | -₹12.2 cr | ₹9.9 cr |
Strike by expiry heatmap
| Strike | Tue 27 Oct 2026 | Mon 23 Nov 2026 |
|---|---|---|
| 1,010 | ₹3.1 | ₹0.08 |
| 1,000 | ₹18.2 | ₹0.58 |
| 990 | ₹5.8 | |
| 980 | ₹9.5 | ₹0.38 |
| 970 | ₹13 | ₹0.08 |
| 960 | ₹15.9 | ₹0.55 |
| 950 | ₹6 | ₹0.06 |
| 940 | -₹12.8 | -₹0.28 |
| 930 | -₹4.4 | |
| 920 | -₹5.8 | -₹0.07 |
| 910 | -₹3 | |
| 900 | -₹7.1 | -₹0.44 |
| 890 | -₹4.6 | -₹0.29 |
| 880 | -₹2.2 | -₹0.08 |
| 870 | -₹0.51 |
Expiries
| Expiry | Days | Lot size | Call OI | Put OI | PCR | Max pain |
|---|---|---|---|---|---|---|
| Tue 27 Oct 2026 | 19 | 750 | 4,67,39,250 | 3,59,23,500 | 0.77 | 980 |
| Mon 23 Nov 2026 | 46 | 750 | 18,99,000 | 9,84,000 | 0.52 | 960 |
| Tue 29 Dec 2026 | 82 | 750 | 34,500 | 6,000 | 0.17 | 960 |
Wall migration
| Date | Close | Call wall | Put wall | Gamma flip | Max pain | PCR | Call OI chg | Put OI chg |
|---|---|---|---|---|---|---|---|---|
| 8 Oct 2026 | 940.17 | 960 | 940 | 919 | 980 | 0.76 | +34,87,500 | +7,37,250 |
| 7 Oct 2026 | 954 | 1,000 | 960 | 933 | 990 | 0.80 | +31,71,000 | +9,54,750 |
| 6 Oct 2026 | 958.73 | 1,000 | 1,000 | 939 | 990 | 0.84 | +40,44,750 | +5,46,000 |
Method
Implied volatility from settlement prices, carry from put-call parity, risk-free rate 5.5%. 130 contracts used, 1 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.