# NDX — GEX Heatmap · GammaGrid demo

**Gamma weather: Storm.** This chain has no gamma flip within 25% of the price, so only the sign of gamma is known — negative, hedging amplifies moves. *(next 30 days · 22 expiries)*

| Level | Value |
|---|---|
| Price | 27,817.15 |
| Call wall | 29,675.00 |
| Put wall | 20,000.00 |
| Gamma flip | — |
| Net GEX | -1.6 M |

## Gamma exposure across expiries

Net dealer gamma per expiry (the columns of the heatmap), and the walls and the gamma flip as they stand with more expiries folded in — the heatmap's depth slider.

| Expiry | Net GEX | Contracts |
|---|---|---|
| 2026-11-09 | 0.9 M | 598 |
| 2026-11-10 | -0.4 M | 382 |
| 2026-11-11 | -0.2 M | 299 |
| 2026-11-12 | -0.0 M | 214 |
| 2026-11-13 | -0.2 M | 338 |
| 2026-11-16 | -0.1 M | 154 |

| Expiries folded in | Call wall | Put wall | Gamma flip |
|---|---|---|---|
| 1 | 27,350.00 | 26,000.00 | 27,783.83 |
| 2 | 27,350.00 | 26,000.00 | 27,785.88 |
| 3 | 27,350.00 | 26,000.00 | 27,787.41 |
| 4 | 27,350.00 | 26,000.00 | 27,787.84 |
| 5 | 27,350.00 | 24,000.00 | 27,821.90 |
| 6 | 27,350.00 | 24,000.00 | 27,878.67 |

## About these numbers

Computed by GammaGrid from the NDX options chain — dealer gamma exposure, max pain and the walls are GammaGrid's own arithmetic over open interest; the source data is delayed. Collected 2026-11-09T17:31:30.441076 UTC; this page follows the collection, roughly every fifteen minutes while the market is open.

Other views of NDX: [Overview](https://app.gammagrid.io/demo/t/NDX.md) · [Max Pain / GEX](https://app.gammagrid.io/demo/t/NDX/max-pain.md) · [Volatility (IV)](https://app.gammagrid.io/demo/t/NDX/volatility.md).

Canonical page: <https://app.gammagrid.io/demo/t/NDX/heatmap> · The demo shows the free list only; a GammaGrid account watches any US-listed ticker with options, replays earlier collections and opens every contract: <https://app.gammagrid.io/>