PT - JOURNAL ARTICLE AU - Keith P. Ambachtsheer TI - Where are the Customers' Alphas? AID - 10.3905/jpm.1977.52 DP - 1977 Oct 31 TA - The Journal of Portfolio Management PG - 52--56 VI - 4 IP - 1 4099 - https://pm-research.com/content/4/1/52.short 4100 - https://pm-research.com/content/4/1/52.full