TATASTEEL 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.
TATASTEEL levels for the session of 9 Oct 2026, from the 8 Oct 2026 close of 171.89: call wall 190, put wall 180, gamma flip 167 (the close sat above it), max pain 182.5 for the 27 Oct 2026 expiry, put/call OI ratio 0.59, net GEX ₹11.8 cr per 1% move.
- Close
- 171.89
- 8 Oct 2026
- Call wall
- 190
- +10.54%
- Put wall
- 180
- +4.72%
- Gamma flip
- 167
- Max pain
- 182.5
- Tue 27 Oct 2026 expiry
- PCR (OI)
- 0.59
- nearest 0.59
- Net GEX
- ₹11.8 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 -₹119 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 |
|---|---|---|---|---|---|---|---|
| 165 | 5,72,000 | 39,76,500 | +1,40,250 | +7,56,250 | ₹0.46 cr | -₹3.1 cr | -₹2.7 cr |
| 167.5 | 5,74,750 | 16,19,750 | +5,74,750 | +6,49,000 | ₹0.52 cr | -₹1.5 cr | -₹0.94 cr |
| 170 | 28,10,500 | 87,17,500 | +7,37,000 | +31,73,500 | ₹2.7 cr | -₹8.2 cr | -₹5.5 cr |
| 172.5 | 28,71,000 | 48,56,500 | +12,15,500 | +5,91,250 | ₹2.8 cr | -₹4.8 cr | -₹1.9 cr |
| 175 | 1,09,25,750 | 79,80,500 | +68,69,500 | +13,03,500 | ₹10.4 cr | -₹7.5 cr | ₹2.8 cr |
| 177.5 | 37,70,250 | 38,55,500 | +3,21,750 | -19,250 | ₹3.3 cr | -₹3.4 cr | -₹0.08 cr |
| 180 | 1,19,73,500 | 1,15,91,250 | +8,33,250 | -20,92,750 | ₹9.4 cr | -₹9.1 cr | ₹0.3 cr |
Strike by expiry heatmap
| Strike | Tue 27 Oct 2026 | Mon 23 Nov 2026 |
|---|---|---|
| 185 | ₹3.7 | ₹0.22 |
| 182.5 | ₹1.8 | |
| 180 | ₹0.32 | |
| 177.5 | -₹0.08 | |
| 175 | ₹2.9 | -₹0.06 |
| 172.5 | -₹1.9 | |
| 170 | -₹5 | -₹0.43 |
| 167.5 | -₹0.93 | |
| 165 | -₹2.5 | -₹0.15 |
| 162.5 | -₹0.43 | |
| 160 | -₹1.6 | -₹0.24 |
Expiries
| Expiry | Days | Lot size | Call OI | Put OI | PCR | Max pain |
|---|---|---|---|---|---|---|
| Tue 27 Oct 2026 | 19 | 2750 | 14,18,86,250 | 8,37,07,250 | 0.59 | 182.5 |
| Mon 23 Nov 2026 | 46 | 2750 | 38,50,000 | 25,54,750 | 0.66 | 180 |
| Tue 29 Dec 2026 | 82 | 2750 | 1,56,750 | 30,250 | 0.19 | 175 |
Wall migration
| Date | Close | Call wall | Put wall | Gamma flip | Max pain | PCR | Call OI chg | Put OI chg |
|---|---|---|---|---|---|---|---|---|
| 8 Oct 2026 | 171.89 | 190 | 180 | 167 | 182.5 | 0.59 | +1,18,55,250 | +42,54,250 |
| 7 Oct 2026 | 175.63 | 190 | 180 | 170 | 185 | 0.61 | +1,50,97,500 | +11,93,500 |
| 6 Oct 2026 | 178.69 | 190 | 180 | 174 | 187.5 | 0.68 | +25,85,000 | +23,40,250 |
Method
Implied volatility from settlement prices, carry from put-call parity, risk-free rate 5.5%. 88 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.