Dealer Gamma (GEX) Tracker
Use options-chain data to estimate where gamma exposure is concentrated. Gamma flips and call or put walls provide scenario references; actual dealer inventories and future hedging flows are not directly observed.
Gamma flip
An estimated zero-gamma level, used to frame possible changes in hedging behavior under the model's assumptions.
Call & put walls
Strikes with concentrated option positioning. These levels can provide context but are not guaranteed support or resistance.
Net gamma by strike
Dollar-gamma profile around spot, with max-pain and the OI map.
0DTE / intraday levels
Front-expiry expected move and gamma-by-strike for SPY, QQQ and SPX.
What is the gamma flip?
The gamma flip is an underlying price where the model's aggregate gamma estimate changes sign. Its interpretation depends on assumptions about option ownership and hedging; it does not establish how dealers will trade or how price will move.
Which products are covered?
Index-level dealer positioning for SPY, QQQ and SPX, plus per-ticker gamma where liquid.