GC1! / MGC1! Futures GEX inferred from GLD
Gold futures have no listed options book in our data, so this chart infers dealer gamma from GLD ETF options and maps every strike onto GC1! prices. Read it like any other GEX chart: the call wall, put wall and gamma flip are in futures points.
Inferred positioning: these levels come from index and ETF option chains, not from options listed on the futures themselves.
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
How the inference works
Same math as the equity GEX chart, plus a price mappingStep 1
Compute each option book on its own chain
Dealer gamma is computed strike by strike for GLD options exactly as on the ordinary GEX calculator, on the dollar-per-1%-move basis so the books are comparable.
Step 2
Map every strike onto GC1! prices
Each strike is multiplied by that source's futures/source ratio (the median of the last 30 regular-session minutes where both series printed, refreshed hourly) and snapped to one futures strike grid.
Step 3
Combine, then re-derive the levels
The mapped profiles are summed in normalized dollar GEX, never raw gamma. Call wall and put wall are re-read from the combined profile; the gamma flip is the exposure-weighted mean of the sources' flips. A source toggle shows either book alone.
Covered contracts
Six families, each with its microQuestions
About inferred futures GEXFAQ