NEW YORK ( TheStreet) -- Auxilium Pharmaceuticals (Nasdaq: AUXL) is trading at unusually high volume Monday with 2.6 million shares changing hands. It is currently at four times its average daily volume and trading down $1.13 (-6%) at $17.61 as of 3:16 p.m. ET. Auxilium has a market cap of $901.8 million and is part of the health care sector and drugs industry. Shares are down 11.2% year to date as of the close of trading on Friday. Auxilium Pharmaceuticals, Inc. operates as a specialty biopharmaceutical company primarily in the United States. TheStreet Ratings rates Auxilium as a sell. The company's weaknesses can be seen in multiple areas, such as its deteriorating net income, disappointing return on equity and generally disappointing historical performance in the stock itself. You can view the full Auxilium 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.