Discover how to accurately calculate beta in Excel, understand its importance in finance, and ensure consistency by choosing the correct time periods for data analysis.

Daniel McNulty began writing for Investopedia in 2012. His work includes articles on financial analysis, asset allocation, and trading strategies. Andy Smith is a Certified Financial Planner (CFP®), ...

Beta is the 2nd letter in the Greek alphabet, and the financial world uses it to refer to the sensitivity of an asset’s price compared to a specific index or benchmark. Beta is also used as a measure ...

Beta measures a stock’s volatility compared to the overall market. A beta above 1 means the stock is more volatile, while a ...