RT Journal Article SR Electronic T1 Option Position and Exercise Limits JF The Journal of Portfolio Management FD Institutional Investor Journals SP 92 OP 96 DO 10.3905/jpm.1992.409430 VO 19 IS 1 A1 Gary L. Gastineau YR 1992 UL https://pm-research.com/content/19/1/92.abstract AB