Notable Friday Option Activity: COST, AAL, CI
May 06, 2016 at 14:18 PM EDT
Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Costco Wholesale Corp (COST), where a total volume of 13,061 contracts has been traded thus far today, a contract volume which is representative of approximately 1.3 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 58.2% of COST's average daily trading volume over the past month, of 2.2 million shares..