Stocks Hitting 52-Week Highs

ViroPharma (NASDAQ: VPHM ) shares gained 25.52% to touch a new 52-week high of $49.43 after the company agreed to be acquired by Shire (NASDAQ: SHPG ) for $50 per share. RDA Microelectronics (NASDAQ: RDA ) shares rose 3.82% to reach a new 52-week high of $18.20 after