BOXX Gamma Exposure (GEX)
Wednesday, September 9, 2026 · 3-session delayed summary
−$31KNet gamma
$115Call wall
$118Put wall
$118.14Spot at close
Alpha Architect 1-3 Month Box ETF (BOXX) closed that session in a negative gamma regime with net exposure of −$31K: dealers hedge by selling into weakness and buying strength, which amplifies moves in both directions. The dominant call wall sits at $115, while the put wall at $118 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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