As of December 2025 Signet Jewelers has a market cap of โน304.61 Billion. This makes Signet Jewelers the world's 3724th 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 18th, 2025 the market cap of Signet Jewelers was reported to be: