Learn why correlation—not allocation—is the key to diversification, and how ETFs can help build portfolios with assets that truly move differently.

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

The one-year correlation between the S&P Equal Weight Index and S&P 500 has dropped to a record low of 79%, revealing extreme ...

What Is the Correlation Coefficient? The correlation coefficient is a metric that measures the strength and direction of a relationship between two securities or variables, such as a stock and a ...

Most of us have heard the phrase "correlation does not equal causation." But understanding how scientists move beyond identifying correlations to establish causation remains a mystery to many. Finding ...

What is Pearson correlation test, Pearson product moment correlation or Pearson r? Pearson’s correlation helps us understand the relationship between two quantitative variables when the relationship ...

Correlation doesn't imply causation. You've probably heard that before. It's a true statement that's important in statistical analysis—if more tall people own cats, that doesn't mean that cats cause ...