Dealer gamma · SYY
Computed 2026-09-21 after the close from SYY's listed option chain. Nothing here is predicted: these are the strikes where dealer hedging concentrates, recomputed every trading night.
Computed 2026-09-21 22:49 · refreshed nightly
| Night | Spot | Flip | Call wall | Put wall | Net gamma |
|---|---|---|---|---|---|
| 2026-09-21 | 79.05 | 85 | 87.5 | 70 | +$0.00bn |
| 2026-09-20 | 79.05 | 87.5 | 87.5 | 70 | +$0.00bn |
| 2026-09-19 | 79.05 | 87.5 | 87.5 | 70 | +$0.00bn |
| 2026-09-18 | 79.11 | 82.5 | 82.5 | 70 | +$0.01bn |
| 2026-09-17 | 78.71 | 80 | 80 | 70 | +$0.01bn |
| 2026-09-16 | 78.71 | 82.5 | 85 | 75 | +$0.00bn |
| 2026-09-15 | 83.54 | 82.5 | 87.5 | 70 | +$0.00bn |
| 2026-09-14 | 83.21 | 82.5 | 85 | 70 | +$0.01bn |
| 2026-09-12 |
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.
| 83.21 |
| 82.5 |
| 85 |
| 70 |
| +$0.01bn |
| 2026-09-11 | 82.31 | 85 | 85 | 82.5 | +$0.01bn |
