NEW YORK ( TheStreet) -- Shares of Questcor Pharmaceuticals (Nasdaq: QCOR) were gapping up Wednesday morning with an open price 15.3% higher than Tuesday's closing price. The stock closed at $33.30 Tuesday and opened today's trading at $38.41. The average volume for Questcor has been 1.3 million shares per day over the past 30 days. Questcor has a market cap of $2.1 billion and is part of the health care sector and drugs industry. Shares are up 132.8% year to date as of the close of trading on Tuesday. Questcor Pharmaceuticals, Inc., a biopharmaceutical company, provides prescription drugs for central nervous system disorders. The company's primary product is H.P. The company has a P/E ratio of 52.8, equal to the average drugs industry P/E ratio and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Questcor as a buy. The company's strengths can be seen in multiple areas, such as its robust revenue growth, largely solid financial position with reasonable debt levels by most measures, notable return on equity, expanding profit margins and impressive record of earnings per share growth. We feel these strengths outweigh the fact that the company is trading at a premium valuation based on our review of its current price compared to such things as earnings and book value. You can view the full Questcor Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping up? Get free SMS text alerts sent to you when the action happens by texting UP to 95370 or select from multiple alert options.