Dealer gamma · CMI
Computed 2026-09-21 after the close from CMI's listed option chain. Nothing here is predicted: these are the strikes where dealer hedging concentrates, recomputed every trading night.
Computed 2026-09-21 23:31 · refreshed nightly
| Night | Spot | Flip | Call wall | Put wall | Net gamma |
|---|---|---|---|---|---|
| 2026-09-21 | 532.23 | 350 | 590 | 530 | -$0.00bn |
| 2026-09-20 | 532.23 | 350 | 580 | 530 | -$0.00bn |
| 2026-09-19 | 532.23 | 350 | 580 | 530 | -$0.00bn |
| 2026-09-18 | 523.88 | 330 | 550 | 530 | -$0.02bn |
| 2026-09-17 | 527.5 | — | 560 | 530 | -$0.01bn |
| 2026-09-16 | 527.5 | — | 560 | 530 | -$0.01bn |
| 2026-09-15 | 541.1 | — | 560 | 530 | -$0.01bn |
| 2026-09-14 | 556.75 | — | 560 | 530 | -$0.01bn |
| 2026-09-13 |
What a wall is: the strike where dealers' hedging exposure concentrates. Price approaching a large call wall tends to meet hedging flow that leans against the move; losing a put wall can accelerate one. A wall is a level that usually matters — not a promise. Our index levels are graded publicly against every session for exactly that reason.
Where this data goes: this same nightly computation feeds the Intel Clearance morning wire — filings, 13F moves, dark-pool share and these walls on the names you follow, read for you by 07:40. And inside the terminal, the index books recompute through the session as 0DTE flow rebuilds the surface.
| 556.75 |
| — |
| 560 |
| 530 |
| -$0.00bn |
| 2026-09-12 | 556.75 | — | 560 | 530 | -$0.00bn |
