Purpose – Most investors' retirement portfolios have inter-period cash inflows. The standard time-weighted mean return (or geometric mean return) is generally used to report returns on investors' retirement portfolios. The purpose of this paper is to examine the standard time-weighted mean...

Purpose – Most investors' retirement portfolios have inter‐period cash inflows. The standard time‐weighted mean return (or geometric mean return) is generally used to report returns on investors' retirement portfolios. The purpose of this paper is to examine the standard time‐weighted...