Notable Thursday Option Activity: UAL, TSLA, GIS

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in United Continental Holdings Inc (UAL), where a total volume of 21,370 contracts has been traded thus far today, a contract volume which is representative of approximately 2.1 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 58.4% of UAL's average daily trading volume over the past month, of 3.7 million shares..