MBB Gamma Exposure (GEX)
Oct 29, 2026 · 3-session delay
+$7.9MNet gamma
$92Call wall
$89Put wall
$91.68Spot at close
iShares MBS ETF (MBB) closed that session in a positive gamma regime with net exposure of +$7.9M: 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 $92, while the put wall at $89 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
What these terms mean: Gamma exposure·Call wall·Put wall
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