Midday movers: Sonic, RF Micro Devices

Stocks were higher right out of the gate and have not moved far from their opening levels.

By MSN Money Partner Mar 26, 2013 1:14PM
Wall Street sign copyright Corbis, SuperStockInformation provided by Theflyonthewall.com

Goldman Sachs (GS) announced that it amended its warrant agreement with Berkshire Hathaway (BRK.A) to settle in terms of net shares in place of a cash settlement, quoting Berkshire's Chairman and CEO Warren Buffett as having said, "We intend to hold a significant investment in Goldman Sachs." Shares of Goldman, which rose early in the session, were down fractionally near noon.

Among the notable gainers were Sonic (SONC), which rose 8% following its earnings report, and RF Micro Devices (RFMD), which rallied nearly 6% after Oppenheimer upgraded the stock to an "outperform" rating. 

Among the noteworthy losers was Ziopharm (ZIOP), which was downgraded by at least four analyst firms and plunged over 61% after terminating development of a cancer drug after a clinical study missed its goal. 

Also lower were shares of Calumet Specialty Products (CLMT), down 4% after an offering of 5.25 million of its shares priced at $37.50.
Tags: BRK.AGS
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