Noteworthy Thursday Option Activity: ALGN, CELG, CB
August 17, 2017 at 14:20 PM EDT
Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Align Technology Inc (ALGN), where a total volume of 4,688 contracts has been traded thus far today, a contract volume which is representative of approximately 468,800 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 46.6% of ALGN's average daily trading volume over the past month, of 1.0 million shares..