RT Journal Article SR Electronic T1 “You can't fool all of the people all of the time” JF The Journal of Portfolio Management FD Institutional Investor Journals SP 11 OP 15 DO 10.3905/jpm.1986.409051 VO 12 IS 2 A1 Jeremy Grantham YR 1986 UL https://pm-research.com/content/12/2/11.abstract AB