PT - JOURNAL ARTICLE AU - Don M. Chance AU - Stephen P. Ferris TI - The CBOE call option index AID - 10.3905/jpm.1985.409035 DP - 1985 Oct 31 TA - The Journal of Portfolio Management PG - 75--83 VI - 12 IP - 1 4099 - https://pm-research.com/content/12/1/75.short 4100 - https://pm-research.com/content/12/1/75.full