Notable Thursday Option Activity: AMP, DG, DVA

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Ameriprise Financial Inc (AMP), where a total volume of 1,851 contracts has been traded thus far today, a contract volume which is representative of approximately 185,100 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 45.4% of AMP's average daily trading volume over the past month, of 407,750 shares..