NEW YORK ( TheStreet) -- Shares of Dendreon (Nasdaq: DNDN) were gapping down Tuesday morning with an open price 18.6% lower than Monday's closing price. The stock closed at $6.18 Monday and opened today's trading at $5.03.

The average volume for Dendreon has been 6.3 million shares per day over the past 30 days. Dendreon has a market cap of $960.9 million and is part of the health care sector and drugs industry. Shares are down 18.7% year to date as of the close of trading on Monday.

Dendreon Corporation, a biotechnology company, engages in the discovery, development, and commercialization of novel therapeutics to enhance cancer treatment options for patients.

TheStreet Ratings rates Dendreon as a sell. The company's weaknesses can be seen in multiple areas, such as its disappointing return on equity, generally disappointing historical performance in the stock itself and generally weak debt management. You can view the full Dendreon Ratings Report.

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