Standard deviation, while common, inadequately captures investment risk due to its equal treatment of gains and losses and ...

Expected return and standard deviation can help you analyze investment portfolios. Learn their differences, uses, and ...

Learn how using historical data, instead of standard deviation, offers a more accurate assessment of stock volatility and risk management strategies.

In response to my article, Is the Stock Market Too Concentrated?, which relied upon standard-deviation calculations to assess investment risk, a reader wrote: “My problem [with your argument] is ...