Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Palantir Technologies Inc (PLTR), where a total volume of 612,607 contracts has been traded thus far today, a contract volume which is representative of approximately 61.3 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 111.3% of PLTR's average daily trading volume over the past month, of 55.0 million shares..