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Check the scope. Then follow the wall.

Annotated saved NVDA session · October 22, 2026. On a narrow screen, scroll the chart sideways to inspect it.

NVDA · Check the scope. Then follow the wall.Saved session · October 22, 2026
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Check the scope. Then follow the wall. Annotated NVDA GEX snapshot. Marker 1 identifies the selected October 23 expiration. Marker 2 identifies the $220 positive and $210 negative GEX concentrations. Marker 3 points to the three-expiration heatmap headers. 1 2 3
  1. 1
    Confirm the selected expiration.

    October 23 drives the headline −$46.63M net GEX. Negative gamma here means a negative modeled total; it is not a bearish price prediction.

  2. 2
    Locate the concentrations.

    The positive GEX and call walls share $220. The negative GEX and put walls share $210. They are separate measures that happen to align here.

  3. 3
    Compare dates consistently.

    Each heatmap column represents its own expiration. Follow a strike across columns and use the shared color scale to compare sign and size.

Historical provider-data caveat: this saved options book uses $212.86 while the chart closes at $212.21. The worked example documents the end-of-day reference issue affecting IV and Greeks; these figures illustrate how to read the display and are not independently verified synchronized closing inputs.

The read: Use $210 and $220 as references to investigate alongside price. Neither a wall nor the regime proves a future bounce, direction or actual dealer inventory.

Educational historical example. The original screenshot and values are unchanged; numbered annotations identify what the lesson discusses.