Notable Wednesday Option Activity: FSLR, ALGN, MSFT

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in First Solar Inc (FSLR), where a total volume of 16,787 contracts has been traded thus far today, a contract volume which is representative of approximately 1.7 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 71.2% of FSLR's average daily trading volume over the past month, of 2.4 million shares..