Gina Francolla is the Senior Producer of Quantitative & Market Data Services at CNBC.
More new shorts were added in Nasdaq stocks in the end of March, but they declined on NYSE names.
Paraskevidekatriaphobia is the fear of Friday the 13th. For the stock market, however, this 'unlucky' day tends to be relatively calm.
Ahead of the presidential election, CNBC created the CNBC Obama Index and the CNBC Romney Index featuring companies that could be viewed as winners or losers depending on the outcome of the race.
After rising to a new 4-year high last month, utilities are now the only large S&P sector trading in the red this year.
Three sectors have managed gains of more than 20 percent in 2014, while two others are lagging badly.
The Dow Jones industrial average has historically taken an average of about 32 months to jump from one thousand-point mark to the next.
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.