ETERNAL 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.
ETERNAL levels for the session of 9 Oct 2026, from the 8 Oct 2026 close of 321.06: call wall 330, put wall 320, gamma flip 307 (the close sat above it), max pain 325 for the 27 Oct 2026 expiry, put/call OI ratio 0.68, net GEX ₹16.7 cr per 1% move.
- Close
- 321.06
- 8 Oct 2026
- Call wall
- 330
- +2.78%
- Put wall
- 320
- -0.33%
- Gamma flip
- 307
- Max pain
- 325
- Tue 27 Oct 2026 expiry
- PCR (OI)
- 0.68
- nearest 0.68
- Net GEX
- ₹16.7 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 -₹92.1 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 |
|---|---|---|---|---|---|---|---|
| 310 | 8,75,425 | 40,23,075 | -19,400 | -41,225 | ₹1.2 cr | -₹5.7 cr | -₹4.5 cr |
| 315 | 11,68,850 | 12,19,775 | +84,875 | +33,950 | ₹1.8 cr | -₹1.9 cr | -₹0.08 cr |
| 320 | 42,89,825 | 50,51,275 | +1,04,275 | -41,225 | ₹6.8 cr | -₹8 cr | -₹1.2 cr |
| 325 | 24,71,075 | 15,81,100 | +2,32,800 | -1,64,900 | ₹4 cr | -₹2.5 cr | ₹1.4 cr |
| 330 | 89,26,425 | 49,68,825 | +8,29,350 | -2,06,125 | ₹13.6 cr | -₹7.6 cr | ₹6.1 cr |
| 335 | 24,15,300 | 6,83,850 | +5,26,225 | -38,800 | ₹3.4 cr | -₹0.96 cr | ₹2.4 cr |
Strike by expiry heatmap
| Strike | Tue 27 Oct 2026 | Mon 23 Nov 2026 |
|---|---|---|
| 345 | ₹3.1 | |
| 340 | ₹9.2 | ₹0.22 |
| 335 | ₹2.4 | |
| 330 | ₹6 | |
| 325 | ₹1.4 | |
| 320 | -₹1 | -₹0.14 |
| 315 | -₹0.08 | |
| 310 | -₹4.4 | -₹0.08 |
| 305 | -₹0.58 | |
| 300 | -₹4.2 | -₹0.19 |
Expiries
| Expiry | Days | Lot size | Call OI | Put OI | PCR | Max pain |
|---|---|---|---|---|---|---|
| Tue 27 Oct 2026 | 19 | 2425 | 4,38,77,950 | 2,98,15,375 | 0.68 | 325 |
| Mon 23 Nov 2026 | 46 | 2425 | 15,08,350 | 8,65,725 | 0.57 | 330 |
| Tue 29 Dec 2026 | 82 | 2425 | 12,125 | 2,425 | 0.20 | 320 |
Wall migration
| Date | Close | Call wall | Put wall | Gamma flip | Max pain | PCR | Call OI chg | Put OI chg |
|---|---|---|---|---|---|---|---|---|
| 8 Oct 2026 | 321.06 | 330 | 320 | 307 | 325 | 0.68 | +18,11,475 | -3,34,650 |
| 7 Oct 2026 | 328 | 330 | 330 | 309 | 325 | 0.71 | +19,69,100 | +10,01,525 |
| 6 Oct 2026 | 328.99 | 330 | 330 | 308 | 325 | 0.72 | +19,01,200 | +24,61,375 |
Method
Implied volatility from settlement prices, carry from put-call parity, risk-free rate 5.5%. 67 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.