The analysis of correlation matrices has attracted considerable attention almost for a hundred years starting with multivariate analysis in finance 1. In two pioneering papers Laloux et al. and Plerou ...

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

Correlations are some of the most basic pieces of information that help investors understand market moves and build portfolios. However, they lead to some of the most unwieldy estimation problems ...