NEW YORK ( TheStreet) -- Shares of Array BioPharma (Nasdaq: ARRY) were gapping down Thursday morning with an open price 13.2% lower than Wednesday's closing price. The stock closed at $3.19 Wednesday and opened today's trading at $2.77. The average volume for Array BioPharma has been 305,400 shares per day over the past 30 days. Array BioPharma has a market cap of $141.2 million and is part of the health care sector and drugs industry. Shares are up 47.7% year to date as of the close of trading on Wednesday. Array BioPharma Inc., a biopharmaceutical company, focuses on the discovery, development, and commercialization of small molecule drugs to treat patients afflicted with cancer and inflammatory diseases in North America, Europe, and the Asia Pacific. TheStreet Ratings rates Array BioPharma as a sell. The area that we feel has been the company's primary weakness has been its poor profit margins. You can view the full Array BioPharma Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping down? Get free SMS text alerts sent to you when the action happens by texting DOWN to 95370 or select from multiple alert options.