TY - JOUR T1 - The fundamental law of active management JF - The Journal of Portfolio Management SP - 30 LP - 37 DO - 10.3905/jpm.1989.409211 VL - 15 IS - 3 AU - Richard C. Grinold Y1 - 1989/04/30 UR - https://pm-research.com/content/15/3/30.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -