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 Saia 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.

Saia IV rank is 2, so implied volatility is near the bottom 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 38.9% to 192.2%. See the SAIA implied volatility history for a longer view.

Across all open Saia options on Nov 4, 2026, net gamma exposure was $1.25M and net delta exposure was $82.75M per 1% move in the stock. The SAIA gamma exposure chart shows where that gamma sits by strike.

Saia ranks among the 10 largest less-than-truckload carriers in the United States, with more than 210 facilities and a fleet of more than 7,500 tractors and 26,000 trailers.