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: Boston Scientific (BSX), St. Jude Medical (STJ) and Watson Pharmaceuticals (WPI).
Here's how to tell if excessive shorting will result in a reversal known as a short squeeze.
While U.S. indexes suffer from the dog days of summer, emerging markets look to be on a tear.
The Dow shattered through the 17,000-mark Thursday for the first time ever. So far this year, however, the index has been left behind.
The Dow and S&P 500 gained in at least 12 World Cups.