SPYM Gamma Exposure (GEX)
Tuesday, September 8, 2026 · 3-session delayed summary
+$126KNet gamma
$90Call wall
$85Put wall
$90.17Spot at close
State Street SPDR Portfolio S&P 500 ETF (SPYM) closed that session in a positive gamma regime with net exposure of +$126K: dealers hedge by selling rallies and buying dips, which tends to dampen moves and pin price near heavy strikes. The dominant call wall sits at $90, while the put wall at $85 marks the heaviest downside hedging concentration.
Gamma by strike and expiration
Expiration
Positive gammaNegative gammaSpot
How to read this: each column is an expiration, each row a strike. Gold cells mark the largest positive-gamma concentration per expiration (price magnets), purple the most negative (acceleration zones). Walls are where hedging flows are heaviest. Learn how GEX works
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