Today’s midday gainers are Kamada Ltd (NASDAQ:KMDA), MasterCard Inc. (NYSE:MA), Groupon Inc (NASDAQ:GRPN) and midday losers are Opko Health Inc. (NYSE:OPK), Icahn Enterprises LP (NASDAQ:IEP), Idenix Pharmaceuticals Inc (NASDAQ:IDIX).

John Paulson Kamada

Kamada is today’s top performing stock

Today’s midday gainer is Kamada Ltd (NASDAQ:KMDA), the biopharmaceutical company shot up +5.52%, reaching $15.09 after releasing good results of a trial in Canada and Europe. Billionaire John Paulson holds 750,000 shares (0.07% of his fund) acquired during third quarter at an average price of $10.48.

The second stock with the major gain is MasterCard Inc. (NYSE:MA), the credit-card-bank increased +4.03% to $794.38. According to Bloomberg, the big move is due to an 83% rise on dividends announced today by the company. Besides the board of directors informed a 10-for-1 stock split. As of September, Tiger Global Management holds 350,000  MA shares (3.94% of its holding), purchased for average $557.30. Investor Julian Robertson owns 28,000 shares (2.84% of his fund), acquired for $616.14. Another billionaire with a position in MA is Steve Mandel, who bought 701,000 shares (2.10% of his holdings) for $631.07, during last quarter.

Last but not least is Groupon Inc (NASDAQ:GRPN), the discount website, which climbed +3.09% to $10.35. Tiger Global Management holds 18 million shares, representing 3.38% of its portfolio. The fund paid an average price of $4.11 per asset.

Midday Losers

On the top of our midday loser is Opko Health Inc. (NYSE:OPK), the pharmaceutical company dipped -15.57% to $9.71. Investor George Soros picked up 745,000 shares for $8.17 during last quarter. This position represents 0.07% of Soros’ fund.

Following Opko Health Inc. is Icahn Enterprises LP (NASDAQ:IEP), the stock dropped -12.57% to $115.99. Billionaire Carl Icahn holds 100.4 million shares, that represent 33.95% of his holdings. The investor paid an average price of $82.95 per share.

Third and final stock in our midday list is Idenix Pharmaceuticals Inc (NASDAQ:IDIX), the pharmaceutical firm was down -9.25%, hitting $4.61. As of September Seth Klarman holds 39.8 million shares, composing 4.40% of his fund. The billionaire paid an average price of $5.41 per asset.