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Dealer positioning

MRK Gamma Exposure (GEX)

Oct 29, 2026 · 3-session delay

+$28.7MNet gamma
$150Call wall
$130Put wall
$147.01Spot at close

Merck (MRK) closed that session in a positive gamma regime with net exposure of +$28.7M: 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 $150, while the put wall at $130 marks the heaviest downside hedging concentration.

Gamma by strike and expiration

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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More MRK data

Off-exchangeMRK Dark PoolPrints, levels, and off-exchange totalsOrder flowMRK Options FlowPremium totals, sweeps, and top strikesOverviewMRK Symbol OverviewEverything Robinflow tracks on MRK

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