Kristen is CNBC's markets producer. She tracks and quantifies market trends for live coverage from the floor of the New York Stock Exchange. Prior to joining CNBC, Kristen was an equity capital markets reporter at Bloomberg. She was also a contributor and researcher at footnoted, where she dug though SEC filings and broke news on material information. Kristen graduated cum laude from Northwestern University's Medill School of Journalism.
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.