" First, you find the “market capitalization” (“market cap” for short) by multiplying the number of shares outstanding (let’s say 100 million) by the current stock price (let’s say $100 a share). One hundred million times $100 equals $10 billion, so that’s the market cap for DotCom.com. "

― Peter Lynch , One Up On Wall Street: How to Use What You Already Know to Make Money in the Market