Today’s top midday gainers are Enzon Pharmaceuticals Inc (NASDAQ:ENZN), Idenix Pharmaceuticals Inc (NASDAQ:IDIX) and Navios Maritime Holdings Inc. (NYSE:NM).  The losers are Kindred Biosciences Inc (NASDAQ:KIN), Dex Media Inc (NASDAQ:DXM) and B&W Company (NYSE:BWC).

chart_1 (17) Enzon

Enzon, Idenix  Surge

Up +7.92% is Enzon Pharmaceuticals Inc (NASDAQ:ENZN), a firm in the portfolios of both Seth Klarman and Carl Icahn.

A second Klarman pharmaceutical pick is also having a strong start to the day – Idenix Pharmaceuticals Inc (NASDAQ:IDIX), the price of which surged +4.38. Like Enzon, Idenix released results last week, and its price has surged +8.35% since.

Rounding out our list of midday gainers this Tuesday is George Soros bet Navios Maritime Holdings Inc. (NYSE:NM), up +3.98%. Despite today’s gain, NM is down -22.22% for the year.

Kindred Biosciences Slides

Not all of Klarman’s pharmaceutical picks are hitting it out of the park today. Biopharmaceutical company Kindred Biosciences Inc (NASDAQ:KIN) lost -9.08% after missing expectations on its quarterly results. Farallon Capital Management joins Klarman in betting on this one.

The share price of Dex Media Inc (NASDAQ:DXM) fell -8.14% – a notable reverse given that the John Paulson asset has jumped +31.63% since announcing plans to announce results last week.

Down -6.09% is David Einhorn pick B&W Company. News recently came out that it will be acquiring MEGTEC, an industrial processes solutions provider, for $155 million.