Alpha and beta are measures used by investors to classify the performance and risk of an investment security or portfolio. Beta is a measure of market risk, and alpha expresses whether the returns of ...

Jesse Emspak has 20+ years of experience as journalistic entrepreneur and 10 years of financial services reporting on Wall Street. Samantha (Sam) Silberstein, CFP®, CSLP®, EA, is an experienced ...

Daniel McNulty began writing for Investopedia in 2012. His work includes articles on financial analysis, asset allocation, and trading strategies. Dr. JeFreda R. Brown is a financial consultant, ...