Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Yelp Inc (YELP), where a total volume of 2,911 contracts has been traded thus far today, a contract volume which is representative of approximately 291,100 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 44.3% of YELP's average daily trading volume over the past month, of 657,040 shares..