Learn about correlation, including how it measures the relationship between securities, along with how it aids in diversifying your portfolio and risk management.

Correlation measures the relationship between two variables. Investors can use it to understand how one variable can move in relation to the other. Correlation is often used by technical analysts to ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Thomas J Catalano is a CFP and Registered Investment Adviser with the state of ...