Introductory investments courses revolve around Harry Markowitz’s modern portfolio theory and William Sharpe’s Capital Asset Pricing Model. Nonetheless, the textbook versions of these seminal contributions tend to obscure their economic insights, focusing instead on their...

Intraportfolio correlation (IPC), a measure of portfolio diversification, is becoming increasingly popular among investment practitioners. However, despite the assertions of these adherents, IPC is far from a free lunch. Instead, it is a simplistic and flawed measure that ignores material...