RT Journal Article SR Electronic T1 Equity Trading Cost in-the-Large JF The Journal of Portfolio Management FD Institutional Investor Journals SP 41 OP 50 DO 10.3905/jpm.1993.409454 VO 19 IS 4 A1 Hans R. Stoll YR 1993 UL https://pm-research.com/content/19/4/41.abstract AB