NEW YORK ( TheStreet) -- Amylin Pharmaceuticals (Nasdaq: AMLN) is trading at unusually high volume Thursday with 9.1 million shares changing hands. It is currently at 4.3 times its average daily volume and trading down 44 cents (-2.7%) at $15.74 as of 3:50 p.m. ET. Amylin has a market cap of $1.67 billion and is part of the health care sector and drugs industry. Shares are up 42.1% year to date as of the close of trading on Wednesday. Amylin Pharmaceuticals, Inc., a biopharmaceutical company, engages in the discovery, development, and commercialization of drug candidates for the treatment of diabetes, obesity, and other diseases. TheStreet Ratings rates Amylin as a sell. The company's weaknesses can be seen in multiple areas, such as its deteriorating net income and feeble growth in its earnings per share. You can view the full Amylin Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center. Interested in other stocks that are falling on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVDOWN to 95370 or select from multiple alert options.