Option Greeks measure how Main Street Capital Corporation (MAIN) option prices respond to changes in the stock price (delta and gamma), the passage of time (theta), implied volatility (vega), and interest rates (rho). These charts plot each Greek by strike, so you can see where an expiration's price risk, time decay, and volatility exposure are concentrated.
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MAIN Option Greeks FAQ
What are option Greeks?
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).
How do I read the MAIN Greeks charts?
Gamma, theta, and vega are largest for strikes near the Main Street Capital 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.
How does implied volatility affect MAIN's Greeks?
Main Street Capital IV rank is 13, 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 1.1% to 161.7%. See the MAIN implied volatility history for a longer view.
How much gamma and delta do MAIN options carry in total?
Across all open Main Street Capital options on Nov 9, 2026, net gamma exposure was $650.41K and net delta exposure was $2.52M per 1% move in the stock. The MAIN gamma exposure chart shows where that gamma sits by strike.
What is Main Street Capital Corporation?
Main Street Capital Corp is a principal investment firm focused on providing customized long-term debt and equity capital solutions to lower middle market ("LMM") companies and debt capital to private ("Private Loan") companies owned by or in the process of being acquired by a private equity fund.