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

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 ...

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 ...

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 ...

In general, stock correlation refers to how stocks move in relation to one another. While we can speak generally about asset classes being positively or negatively correlated, we can also specifically ...

In the first case, there is a strong upward-sloping relationship between X and Y; in the second case, no apparent relationship; in the third case, a strong downward-sloping relationship. Note the ...

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 ...