Free DIA GEX - DIA Gamma Exposure
Free DIA GEX maps gamma exposure by strike across DIA options. Select expirations for the Dow market period you want to study, then generate the chart to compare net GEX, call wall, put wall and gamma flip.
How to use the DIA GEX tool
Search DIA
DIA is already entered. Keep it or enter another ticker, then select Search.
Select expirations
Choose one or more expiration dates to include.
Generate GEX
Select Generate GEX to view the chart and key levels.
Run up to 3 free GEX calculations per day. Need more?
Continue for free in the GEX SandboxGEX Workspace
Multi-ticker dashboard with alerts
GEX Heatmap
Strike-level gamma by expiration
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Intraday gamma movement & replay
Max Pain Calculator
Options pain strike by expiration
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
Build your DIA GEX workspace
Add DIA Heatmap, Max Pain and other GEX views to a custom multi-ticker workspace.
Open GEX WorkspaceWant to compare strikes across expirations? View the DIA GEX heatmap.
Understanding DIA gamma exposure
DIA tracks a price-weighted basket, so larger moves in higher-priced components can influence the fund differently from broad-market products. Use DIA GEX to compare modeled strike concentrations around the current price and across monthly or shorter expirations. A large open-interest strike is a reference point, not a settlement prediction.
New to the concept? Start with our guides to gamma in options and the options Greeks.
DIA GEX methodology and limitations
QuantWheel calculates DIA GEX from the selected expirations, available options data and the formula displayed in the calculator. The result summarizes modeled gamma exposure by strike.
GEX is a model output, not observed dealer inventory or a price forecast. Open interest does not identify who owns an option, and the displayed call wall, put wall and gamma flip can change when the inputs or selected expirations change.
DIA GEX FAQ
What is DIA GEX?
DIA GEX estimates gamma exposure across listed DIA options using option gamma and open interest. It helps you compare how modeled exposure is distributed by strike and expiration. DIA GEX does not reveal actual dealer positions or predict where DIA will trade.
How do I read the DIA call wall and put wall?
QuantWheel labels the DIA call wall as the strike with the largest positive modeled GEX and the DIA put wall as the strike with the largest negative modeled GEX in your selected data. Compare both with the DIA price and expiration choices. They are reference levels, not guaranteed support or resistance.
What is the DIA gamma flip?
The DIA gamma flip is the price where modeled net gamma crosses zero for the selected DIA options data. Compare it with the current price and the shape of the strike chart. The DIA gamma flip is a model output, not a trading signal.
Which expirations should I use for DIA GEX?
Start with the nearest DIA expiration to study short-dated positioning, then add later expirations to compare a broader part of the options chain. Each selection changes which DIA contracts are included, so compare one expiration with a combined view before drawing conclusions.
Is the DIA GEX calculator free?
Yes. You can run up to three free DIA GEX calculations per day on the public tool. After using those calculations, continue for free in the GEX Sandbox. Check the current QuantWheel pricing page for plan access details.