COST GEX - Live Gamma Exposure
Live COST GEX levels for Costco Wholesale Corporation: net gamma exposure, call wall, put wall, and the gamma flip level — plus a free interactive COST GEX chart.
The calculator below is pre-filled with COST — hit search to compute the latest gamma exposure by strike from live options data. Prefer strikes and expirations in one view? Open the COST 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 COST gamma exposure
Costco carries one of the highest nominal share prices in consumer retail, which pushes strike intervals wide and prices casual speculation out of its options chain. What remains is institutional: hedges on large positions, systematic overwriting, and earnings positioning. COST gamma exposure is therefore concentrated into relatively few strikes, and those strikes hold - the call wall and put wall on this name are among the more stable levels in the consumer sector.
Costco also reports monthly sales figures, which gives its gamma a rhythm most retailers lack: positioning refreshes twelve times a year rather than four. The stock's persistent premium valuation means the options market is unusually attentive to any deceleration in comparable sales, and the put wall firms up quickly when one appears. In positive gamma, which is most of the time, COST pins into monthly expiration with the reliability you would expect from a chain this institutionally held.
New to the concept? Start with our guides to gamma in options and the options Greeks.
COST GEX FAQ
What is COST GEX (gamma exposure)?
COST GEX measures the aggregate gamma that options market makers carry across all COST strikes and expirations. When COST 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 Costco Wholesale Corporation options chain.
What is the COST call wall and put wall?
The COST call wall is the strike with the largest positive gamma exposure and often acts as resistance, while the COST 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 $970, the put wall is at $930, the gamma flip level is near $936.93.
What is the COST gamma flip level?
The COST 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 COST volatility; below it, the same hedging amplifies moves in both directions. The latest computed flip level is near $936.93.
How often is COST 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 COST options chain data on demand. Open interest itself is published by OCC once daily before the open.
Is this COST GEX chart free?
Yes. The COST 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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