What Is Gamma Exposure (GEX)? Dealer Hedging
Gamma exposure, or GEX, estimates the hedging dealers do as prices move. See the calculation, the assumptions it rests on, and why free GEX numbers differ.
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The Option Greeks Explained: Delta to Rho
Delta, gamma, theta, vega and rho, the five option greeks, demonstrated by tracing one real SPY call through its whole life against the stock.
What Is Option Gamma? Delta's Accelerator
Gamma measures how fast an option's delta changes. See the at-the-money bell, why it spikes near expiry, and how it powers 0DTE and the gamma squeeze.