Notable Thursday Option Activity: ZION, CELG, ISRG
June 14, 2018 at 13:31 PM EDT
Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Zions Bancorporation (ZION), where a total volume of 8,350 contracts has been traded thus far today, a contract volume which is representative of approximately 835,000 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 47.9% of ZION's average daily trading volume over the past month, of 1.7 million shares..