Buy low and sell high is one of the most fundamental rules of stock investing. Knowing the cost basis of the stocks you purchase can help you estimate your potential profit should you decide to sell.

Cost basis is the original value of an investment. This helps you determine your gains or losses. It’s useful for determining whether your investments are profitable. This is important for taxes as ...

Sometimes an inheritance includes more than a house or an heirloom vase. Investors can choose to pass down to their heirs financial securities like stocks. Determining the value of such a bequest is ...

— -- Q: How do I find my cost basis on a stock? A: If I had to pick one question I get most often, it's how to figure the cost basis of a stock. Readers ask it mostly around tax time, but it ...