%0 Journal Article %A Robert D. Arnott %T What Hath MPT Wrought %B Which Risks Reap Rewards? %D 1983 %R 10.3905/jpm.1983.5 %J The Journal of Portfolio Management %P 5-11 %V 10 %N 1 %U https://jpm.pm-research.com/content/iijpormgmt/10/1/5.full.pdf