PT - JOURNAL ARTICLE AU - Harindra de Silva TI - On Factor Purity in Investment Portfolios AID - 10.3905/jpm.2022.1.447 DP - 2022 Dec 31 TA - The Journal of Portfolio Management PG - 26--32 VI - 49 IP - 2 4099 - https://pm-research.com/content/49/2/26.short 4100 - https://pm-research.com/content/49/2/26.full