TY - JOUR T1 - Editor’s Introduction for 2021 Special Issue on Factor Investing JF - The Journal of Portfolio Management SP - 1 LP - 3 DO - 10.3905/jpm.2020.47.2.001 VL - 47 IS - 2 AU - Frank J. Fabozzi Y1 - 2020/12/31 UR - https://pm-research.com/content/47/2/1.abstract N2 - ER -