DIA GEX — Live Gamma Exposure
Live DIA GEX levels for SPDR Dow Jones Industrial Average ETF: net gamma exposure, call wall, put wall, and the gamma flip level — plus a free interactive DIA GEX chart.
The calculator below is pre-filled with DIA — hit search to compute the latest gamma exposure by strike from live options data. Prefer strikes and expirations in one view? Open the DIA 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 most negative GEX (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 DIA gamma exposure
DIA options track the price-weighted Dow 30, and while the chain is thinner than SPY or QQQ, its gamma structure is cleaner to read for exactly that reason. Open interest concentrates in fewer strikes, so the DIA call wall and put wall stand out clearly and tend to persist across sessions. GEX in DIA is a useful check on blue-chip positioning, distinct from the tech-heavy signal in the Nasdaq products.
Because the Dow is price-weighted, big moves in its highest-priced components (think UNH, GS, MSFT) can push DIA across its gamma flip level even when market breadth is unremarkable. In positive gamma, DIA is one of the more reliable 'pin' candidates into monthly OPEX — price frequently settles near the strike with the largest open interest.
New to the concept? Start with our guides to gamma in options and the options Greeks.
DIA GEX FAQ
What is DIA GEX (gamma exposure)?
DIA GEX measures the aggregate gamma that options market makers carry across all DIA strikes and expirations. When DIA 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 SPDR Dow Jones Industrial Average ETF options chain.
What is the DIA call wall and put wall?
The DIA call wall is the strike with the largest positive gamma exposure and often acts as resistance, while the DIA put wall is the strike with the largest negative gamma exposure and often acts as support.
What is the DIA gamma flip level?
The DIA 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 DIA volatility; below it, the same hedging amplifies moves in both directions.
How often is DIA 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 DIA options chain data on demand. Open interest itself is published by OCC once daily before the open.
Is this DIA GEX chart free?
Yes. The DIA 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.
Track DIA GEX all day, automatically
The QuantWheel GEX Dashboard adds unlimited lookups, intraday gamma tracking, wall-movement alerts, and a multi-ticker workspace.
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