GM GEX - Live Gamma Exposure
Live GM GEX levels for General Motors Company: net gamma exposure, call wall, put wall, and the gamma flip level — plus a free interactive GM GEX chart.
The calculator below is pre-filled with GM — hit search to compute the latest gamma exposure by strike from live options data. Prefer strikes and expirations in one view? Open the GM GEX heatmap.
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What is Gamma Exposure (GEX)?
Gamma Exposure represents the sensitivity of an option's delta to changes in the underlying price. Market makers hedge their gamma exposure, creating support/resistance at high GEX strikes.
Key Levels:
- Call Wall: Strike with highest positive GEX (resistance)
- Put Wall: Strike with the largest put GEX, shown as the deepest negative bar (support)
- Gamma Flip: Where total GEX changes from negative to positive
Positive GEX: Market makers sell into rallies, buy into dips (stabilizing).
Negative GEX: Market makers buy into rallies, sell into dips (amplifying moves).
Select a ticker and expiration date, then click Generate GEX to see the analysis
Understanding GM gamma exposure
General Motors' options market differs from Ford's in one structurally important way: GM has run large, sustained share repurchase programs, which changes the supply-demand balance in the underlying stock and gives dealer hedging a somewhat different backdrop. Its higher nominal price also spreads gamma across wider strike intervals, making individual walls more meaningful than Ford's dense ladder allows.
GM gamma builds around quarterly earnings, where truck and SUV pricing drives the numbers, and around periodic autonomous-vehicle and EV program news. The call wall has repeatedly capped rallies during periods when the market rewarded the buyback story, and the put wall firms up on any sign of pricing weakness in the pickup segment. Read the gamma flip level as a cyclical indicator - GM losing flip has generally coincided with the market repricing US auto demand rather than anything company-specific.
New to the concept? Start with our guides to gamma in options and the options Greeks.
GM GEX FAQ
What is GM GEX (gamma exposure)?
GM GEX measures the aggregate gamma that options market makers carry across all GM strikes and expirations. When GM GEX is positive, dealer hedging dampens price moves (selling rallies, buying dips); when it is negative, hedging amplifies moves. It is calculated from open interest and each contract's gamma across the General Motors Company options chain.
What is the GM call wall and put wall?
The GM call wall is the strike with the largest positive gamma exposure and often acts as resistance, while the GM put wall is the strike with the largest negative gamma exposure and often acts as support. As of the latest snapshot, the call wall is at $85, the put wall is at $75, the gamma flip level is near $84.24.
What is the GM gamma flip level?
The GM gamma flip (zero-gamma) level is the price where net dealer gamma crosses from positive to negative. Above it, market-maker hedging tends to suppress GM volatility; below it, the same hedging amplifies moves in both directions. The latest computed flip level is near $84.24.
How often is GM GEX data updated?
GEX levels on this page are recomputed from live options data throughout US market hours, and the interactive calculator below pulls fresh GM options chain data on demand. Open interest itself is published by OCC once daily before the open.
Is this GM GEX chart free?
Yes. The GM GEX levels on this page are free, and the interactive GEX calculator offers free daily lookups without an account. Creating a free QuantWheel account raises the daily limit, and the GEX Dashboard adds unlimited access, intraday tracking, and alerts.
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