Katharine Beer is a writer, editor, and archivist based in New York. She has a broad range of experience in research and writing, having covered subjects as diverse as the history of New York City's ...

Weighted average is a powerful tool for an investor. It can be used to evaluate the performance of a portfolio. It can help us better understand how the broader market moves. Even more important, it ...

When a company calculates its earnings over a certain period of time, it divides its profits by the number of outstanding shares. However, companies' outstanding shares can change over time as a ...

Use a weighted average to evaluate stock performance if purchased in multiple transactions. Calculate weighted average by multiplying share price by quantity, then divide by total shares. Knowing your ...

When a company calculates its earnings over a certain period of time, it divides its profits by the number of outstanding shares. However, companies' outstanding shares can change over time as a ...

If you bought a different number of shares with each trade, a simple average of the prices won't be accurate. If you've bought a certain stock over a series of transactions, then it can be useful to ...