%0 Journal Article %A Bartley J. Madden %T Structural Changes in Trading Stocks %D 1993 %R 10.3905/jpm.1993.409467 %J The Journal of Portfolio Management %P 19-27 %V 20 %N 1 %U https://jpm.pm-research.com/content/iijpormgmt/20/1/19.full.pdf