An asset's standard deviation tells you how much its returns vary from its average. You can quickly calculate or look up the standard deviation of different assets. A high standard deviation can ...

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 ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Gordon Scott has been an active investor and technical analyst or 20+ years.

Ryan Eichler holds a B.S.B.A with a concentration in Finance from Boston University. He has held positions in, and has deep experience with, expense auditing, personal finance, real estate, as well as ...