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 Stellantis 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.

Stellantis IV rank is 31, 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 29.9% to 99.3%. See the STLA implied volatility history for a longer view.

Across all open Stellantis options on Nov 4, 2026, net gamma exposure was $448.48K and net delta exposure was $7.58M per 1% move in the stock. The STLA gamma exposure chart shows where that gamma sits by strike.

Stellantis was created out of the merger of US-based Fiat Chrysler Automobiles and French-based Peugeot in January 2021, resulting in the fourth-largest automotive original equipment manufacturer by vehicle sales.