RT Journal Article SR Electronic T1 The CBOE call option index JF The Journal of Portfolio Management FD Institutional Investor Journals SP 75 OP 83 DO 10.3905/jpm.1985.409035 VO 12 IS 1 A1 Don M. Chance A1 Stephen P. Ferris YR 1985 UL https://pm-research.com/content/12/1/75.abstract AB