NEW YORK ( TheStreet) -- Rigel Pharmaceuticals (Nasdaq: RIGL) is trading at unusually high volume Thursday with 1.3 million shares changing hands. It is currently at 4.6 times its average daily volume and trading down 24 cents (-2.8%) at $8.25 as of 9:42 a.m. ET. Rigel has a market cap of $415.7 million and is part of the health care sector and drugs industry. Rigel Pharmaceuticals, Inc., a clinical-stage drug development company, engages in the discovery and development of small-molecule drugs for the treatment of inflammatory/autoimmune diseases, as well as for certain cancers and metabolic diseases. TheStreet Ratings rates Rigel as a sell. The company's weaknesses can be seen in multiple areas, such as its generally disappointing historical performance in the stock itself and poor profit margins. You can view the full Rigel 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.