RT Journal Article SR Electronic T1 Portfolio Composition and the Investment Horizon Revisited JF The Journal of Portfolio Management FD Institutional Investor Journals SP 62 OP 67 DO 10.3905/jpm.1996.409565 VO 22 IS 4 A1 Robert A Ferguson A1 Yusif E Simaan YR 1996 UL https://pm-research.com/content/22/4/62.abstract AB