Learn about gross, operating, and net profit margins, how each is calculated, and how businesses and investors can use them to analyze a company’s profitability.

People invest with the hope of earning a return over time. But what happens when you choose to sell? Cost basis is key to understanding your tax obligations and the true profit of your investments.

Reinvest dividends to buy more shares; consider tax when selling shares accumulated via DRIPs. Dividends received outside IRA are taxable, increasing your stock's tax basis over time. Track cost basis ...