NEW YORK ( TheStreet) -- Shares of Idenix Pharmaceuticals (Nasdaq: IDIX) were gapping down Thursday morning with an open price 26.2% lower than Wednesday's closing price. The stock closed at $4.01 Wednesday and opened today's trading at $2.96. The average volume for Idenix has been 158,100 shares per day over the past 30 days. Idenix has a market cap of $299.9 million and is part of the health care sector and drugs industry. Idenix Pharmaceuticals, Inc., a biopharmaceutical company, engages in the discovery and development of drugs for the treatment of human viral and other infectious diseases in the United States and Europe. TheStreet Ratings rates Idenix as sell. The company's weaknesses can be seen in multiple areas, such as its deteriorating net income and weak operating cash flow. You can view the full Idenix Ratings Report.