if you are undecided and lack conviction, then you are a potential market victim, - Peter Lynch

If you can follow only one bit of data, follow the earnings — assuming the company in question has earnings. As you’ll see in this text, I subscribe to the crusty notion that sooner or later earnings make or break an investment in equities. What the stock price does today, tomorrow, or next week is only a distraction.

When you sell in desperation, you always sell cheap.

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.