持有期回报HPR)是Holding Period Return的缩写，其计算公式为持有期股票或债券价值与起初价值的比值。而持有期收益率(HPY)则是持有期回报与1的差额。两者并非等价。

·Return over A Holding Period –Holding Period Return (HPR) – –Holding Period Yield (HPY) HPY=HPR-1 –Annual HPR and HPY Annual HPR=HPR1/n Annual HPY= Annual HPR -1=HPR1/n – 1 where n=number of years of the investment