Gina Francolla is the Senior Producer of Quantitative & Market Data Services at CNBC.
Although tech and energy make up 57 percent of the deals this year, the most successful IPO, based on price appreciation, is GNC, a nutritional-product retailer that went public back in April for $16 a share and is up nearly 75 percent since then.
Coffee, one of the most actively traded commodities in the world, has steadily gone up in price since early 2002, up 410 percent through its highs in May 2011.
Since 1950, September is the worst performing month for the S&P 500 index.
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.