RT Journal Article SR Electronic T1 The Invisible Costs of Trading JF The Journal of Portfolio Management FD Institutional Investor Journals SP 71 OP 78 DO 10.3905/jpm.1994.409498 VO 21 IS 1 A1 Jack L. Treynor YR 1994 UL https://pm-research.com/content/21/1/71.abstract AB