By the Numbers

Feb. 4: Unusual Volume Leaders

What follows is a look at stocks in the S&P 500 displaying unusual volume in today's trading session. 

Some of the highlights include: MasterCard (MA), Monster Worldwide (MWW), Starwood Hotels (HOT) and Western Union (WU).

Stocks Trading 100% Above Their 10-Day Avg.

Stocks Trading 150% Above Their 100-Day Avg.