BSE 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.
BSE levels for the session of 9 Oct 2026, from the 8 Oct 2026 close of 3,334.8: call wall 3,300, put wall 3,200, gamma flip 3,057 (the close sat above it), max pain 3,200 for the 27 Oct 2026 expiry, put/call OI ratio 0.70, net GEX ₹46.6 cr per 1% move.
- Close
- 3,334.8
- 8 Oct 2026
- Call wall
- 3,300
- -1.04%
- Put wall
- 3,200
- -4.04%
- Gamma flip
- 3,057
- Max pain
- 3,200
- Tue 27 Oct 2026 expiry
- PCR (OI)
- 0.70
- nearest 0.70
- Net GEX
- ₹46.6 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 -₹176 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 |
|---|---|---|---|---|---|---|---|
| 3,200 | 8,00,000 | 9,31,800 | -14,400 | +24,400 | ₹10.4 cr | -₹12.1 cr | -₹1.7 cr |
| 3,250 | 79,800 | 2,10,600 | -13,600 | -25,000 | ₹1.2 cr | -₹3 cr | -₹1.9 cr |
| 3,300 | 11,92,000 | 6,57,400 | +41,000 | -45,400 | ₹18.1 cr | -₹10 cr | ₹8.2 cr |
| 3,350 | 4,00,800 | 2,24,200 | +81,000 | +53,200 | ₹6.2 cr | -₹3.5 cr | ₹2.7 cr |
| 3,400 | 11,68,800 | 4,48,200 | +3,26,400 | +10,800 | ₹17.4 cr | -₹6.6 cr | ₹10.7 cr |
| 3,450 | 1,29,200 | 19,200 | +43,400 | +5,800 | ₹1.9 cr | -₹0.28 cr | ₹1.6 cr |
| 3,500 | 13,50,400 | 2,18,400 | +3,41,600 | -18,600 | ₹18 cr | -₹2.9 cr | ₹15.1 cr |
Strike by expiry heatmap
| Strike | Tue 27 Oct 2026 | Mon 23 Nov 2026 |
|---|---|---|
| 3,600 | ₹9 | ₹0.76 |
| 3,550 | ₹0.98 | |
| 3,500 | ₹14.8 | ₹0.25 |
| 3,450 | ₹1.6 | |
| 3,400 | ₹10.5 | ₹0.25 |
| 3,350 | ₹2.7 | |
| 3,300 | ₹8.1 | ₹0.05 |
| 3,250 | -₹1.9 | |
| 3,200 | -₹1.5 | -₹0.18 |
| 3,150 | ₹3 | |
| 3,100 | -₹0.88 | -₹0.06 |
Expiries
| Expiry | Days | Lot size | Call OI | Put OI | PCR | Max pain |
|---|---|---|---|---|---|---|
| Tue 27 Oct 2026 | 19 | 200 | 94,83,800 | 66,06,200 | 0.70 | 3,200 |
| Mon 23 Nov 2026 | 46 | 200 | 2,95,800 | 2,12,400 | 0.72 | 3,300 |
| Tue 29 Dec 2026 | 82 | 200 | 1,000 | 0 | 0.00 | no open interest yet |
Wall migration
| Date | Close | Call wall | Put wall | Gamma flip | Max pain | PCR | Call OI chg | Put OI chg |
|---|---|---|---|---|---|---|---|---|
| 8 Oct 2026 | 3,334.8 | 3,300 | 3,200 | 3,057 | 3,200 | 0.70 | +8,75,800 | -1,66,200 |
| 7 Oct 2026 | 3,356 | 3,300 | 3,200 | 3,097 | 3,200 | 0.78 | +13,37,000 | +4,06,400 |
| 6 Oct 2026 | 3,305 | 3,300 | 3,200 | 3,090 | 3,200 | 0.87 | -3,68,800 | +5,45,200 |
Method
Implied volatility from settlement prices, carry from put-call parity, risk-free rate 5.5%. 84 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.