RT Journal Article SR Electronic T1 Does portfolio insurance ever make sense? JF The Journal of Portfolio Management FD Institutional Investor Journals SP 25 OP 32 DO 10.3905/jpm.1988.409163 VO 14 IS 4 A1 William A. Dreher YR 1988 UL https://pm-research.com/content/14/4/25.abstract AB