Option Greeks measure how an option's price responds to changes in the stock price (delta and gamma), time (theta), implied volatility (vega), and interest rates (rho).

Gamma, theta, and vega are largest for strikes near the Casey's General Stores stock price and shrink for strikes far above or below it. Theta grows as expiration gets closer, while vega is larger for expirations further out. Call delta runs from 0 to 1 and put delta from -1 to 0, near 0.50 and -0.50 at the money, and roughly estimates the chance that an option finishes in the money.

Casey's General Stores IV rank is 20, so implied volatility is in the lower part of its one-year range. Higher implied volatility raises option premiums and daily time decay (theta), and spreads delta and gamma across a wider range of strikes. Over the past year, 30-day implied volatility ranged from 21.9% to 119.8%. See the CASY implied volatility history for a longer view.

Across all open Casey's General Stores options on Nov 4, 2026, net gamma exposure was -$324.04K and net delta exposure was $21.69M per 1% move in the stock. The CASY gamma exposure chart shows where that gamma sits by strike.

Founded in 1968, Casey's General Stores has become the third-largest convenience store retailer in the United States, operating nearly 3,000 locations across 19 states, primarily in the Midwest.