Today’s top midday gainers are Dex Media Inc (NASDAQ:DXM), Tableau Software Inc (NYSE:DATA) and Hillshire Brands Co (NYSE:HSH). The losers are Twitter Inc (NYSE:TWTR), RetailMeNot Inc (NASDAQ:SALE) and Towers Watson & Co (NYSE:TW).

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Dex Media Surges

Today’s top gainer is Dex Media Inc (NASDAQ:DXM), posting an outstanding +25.88% jump. The John Paulson pick recently released its results for Q1 2014.

Analytics software provider Tableau Software Inc (NYSE:DATA) surged +4.72%. In the portfolios of both Tiger Global and George Soros, Tableau also posted better-than-expected results, narrowing losses from the previous quarter.

Another Soros choice is third – food manufacturer Hillshire Brands Co (NYSE:HSH), up +4.70%. The company beat earnings expectations after today’s results release.

Twitter Tumbles

Tumbling -11.92% is Twitter Inc (NYSE:TWTR), today’s biggest loser midday. Almost 500 million shares went into the market today following the expiration of insiders’ sales restrictions last night. Tiger Global currently has a position in TWTR.

RetailMeNot Inc (NASDAQ:SALE) is second, down -7.38%. This is a Soros choice as well.

Posting just a 1% rise in revenue last quarter, Towers Watson & Co (NYSE:TW) lost -6.23%. Steve Mandel has a position in the firm.