Today’s midday gainers are Tableau Software Inc (NYSE:DATA), Sarepta Therapeutics Inc (NASDAQ:SRPT) and ClickSoftware Technologies Ltd. (NASDAQ:CKSW). On the negative side are 3D Systems Corporation (NYSE:DDD), Actuate Corporation (NASDAQ:BIRT) and Extreme Networks, Inc (NASDAQ:EXTR).

George Soros bill ackman pershing square Woodbine Berkowitz

Good Signs at Tableau Software for Soros

Up +15.06% today is business analytics software developer Tableau Software Inc (NYSE:DATA), its price reaching an all-time high. The software provider reported Q4 revenues of $81.5 million, a 95% increase. And full-year revenues were up 82% from the 2012 mark, resting at $232.5 million. That is excellent news for George Soros, who has a 0.04% allocation in the company and has gained over 30% since investing.

Following Tableau is Sarepta Therapeutics Inc (NASDAQ:SRPT), the stock price of which increased +7.69%. The company was put in the spotlight yesterday at the 32nd annual JP Morgan Healthcare Conference, where its CEO gave updates on several clinical trials. Sarepta isn’t exactly in the clear yet, though, as it is currently under pressure over pending FDA approvals and investor lawsuits. Soros will be keeping close watch on its performance, as he owns 665,000 shares.

Last up is ClickSoftware Technologies Ltd. (NASDAQ:CKSW) which surged +6.37% after posting record revenues for 2013. This is again a nice piece of news for George Soros, who as of September owned 3.1 million shares (0.21% of his fund).

3D Systems Fails to Impress

On the flip side, 3D Systems Corporation (NYSE:DDD) fell -18.47% today, having left investors unimpressed with its preliminary full year 2013 results. This is a bit of a blow for Chase Coleman, who has a 1.15% stake in the printer maker.

Down -18.18%, software provider Actuate Corporation (NASDAQ:BIRT) took a big dive. Though it missed EPS expectations by just $0.01, it’s been declining in analysts’ ratings in recent weeks and months – something that’s certainly weighing it down. George Soros is a stakeholder here as well.

Rounding out today’s list of midday losers is another Soros pick, Extreme Networks, Inc (NASDAQ:EXTR), which dipped -17.19%. The company reported GAAP revenue of $146.6 million for its second quarter of fiscal 2014, a 94% jump from the prior year. Despite solid revenues, Extreme is still working out the kinks in its Enterasys acquisitions and posting net losses.