As of December 2025 RLI Corp. has a market cap of โน548.62 Billion. This makes RLI Corp. the world's 2740th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Dec 21st, 2025 the market cap of RLI Corp. was reported to be: