Rating Upgrade Gives Enphase Energy Inc a Boost

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Arrowhead Research Corp (NASDAQ:ARWR), Enphase Energy Inc (NASDAQ:ENPH) and ISIS Pharmaceuticals, Inc. (NASDAQ:ISIS) are today’s top midday gainers on Wall Street. On the losing end are Adept Technology Inc (NASDAQ:ADEP), 21Vianet Group Inc (NASDAQ:VNET) and QuickLogic Corporation (NASDAQ:QUIK).

Arrowhead Research Corporation Climbs on Q3 Results

The share price of Arrowhead Research Corp (NASDAQ:ARWR) climbed +12.65% midday this Tuesday after announcing its fiscal third quarter results. The biopharmaceutical company is up +39.63% year-to-date, including +34.79% over the past month.

Enphase Energy Inc (NASDAQ:ENPH) jumped +9.45% midday aftergetting a boost from a rating upgrade from analysts. Billionaire hedge fund manager Dan Loeb purchased nearly 7.5 million shares of the solar power solutions manufacturer during the second quarter of 2012, maintaining the position through the middle of this month, when he sold off 1.2 million assets.  Enphase’s share price has increased over +140% this year alone.

ISIS Pharmaceuticals, Inc. (NASDAQ:ISIS) hit midday trading up +8.75% for the day, crossing its 200-day moving average of $37.87. ISIS is just barely in the green YTD, but it has gained +30.58% over the past month.

Adept Technology Misses the Mark on Results

Adept Technology Inc (NASDAQ:ADEP) plunged -20.04% after reporting fiscal fourth quarter earnings and revenues – and falling short of analysts’ expectations on both. A maker of robots and autonomous mobile solutions and services, Adept Technology has had a rough go in 2014, its price falling -46.36% YTD.

21Vianet Group Inc (NASDAQ:VNET) dipped -6.68% midday today. In George Soros’ investment portfolio since the first quarter of the year, 21Vianet Group experienced a big surge on August 12th and has bounced around a bit since. The company will report second quarter results tomorrow.

Down -4.41%, QuickLogic Corporation (NASDAQ:QUIK) takes the last spot on today’s list of midday losers. The firm beat analysts’ estimates with its earnings report on July 31st but hasn’t had the best run in recent weeks. Its price has dipped -16.14% over the last month.

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