PT - JOURNAL ARTICLE AU - Frank J. Fabozzi TI - Editor’s Introduction for 2022 Special Issue on Factor Investing AID - 10.3905/jpm.2021.48.2.001 DP - 2021 Dec 31 TA - The Journal of Portfolio Management PG - 1--6 VI - 48 IP - 2 4099 - https://pm-research.com/content/48/2/1.short 4100 - https://pm-research.com/content/48/2/1.full