With news of the Twitter IPO breaking last week, we took a look at how IPOs in general have done so far in 2013. The Bloomberg IPO Index is made up of all companies with market caps >$50 million that have gone public over the last year. As shown in the chart below, the IPO index is up 32.9% YTD compared to a gain of 19.4% for the S&P 500. This represents pretty significant outperformance for IPOs in 2013.
Below is a table highlighting the 25 best performing stocks in the Bloomberg IPO Index since going public. As shown, Solar City (NASDAQ:SCTY) is up the most with a gain of 338%, followed by Stemline Therapeutics (NASDAQ:STML), Trulia (TRLA), ExOne (NASDAQ:XONE) and Marketo (NASDAQ:MKTO).