NEW YORK ( TheStreet) -- Shares of Denison Mines Corporation (AMEX: DNN) were gapping down Monday morning with an open price 29.2% lower than Friday's closing price. The stock closed at $3.29 Friday and opened today's trading at $2.33. The average volume for Denison Mines has been 3.1 million shares per day over the past 30 days. Denison Mines has a market cap of $1.1 billion and is part of the basic materials sector and metals & mining industry. Shares are down 3.8% year to date as of the close of trading on Friday. Denison Mines Corp. engages in the exploration, development, mining, and milling of uranium primarily in the United States and Canada. It also produces vanadium as a co-product from its mines located in Colorado and Utah; and recycles uranium-bearing waste materials, as well as gold. TheStreet Ratings rates Denison Mines as hold. The company's strengths can be seen in multiple areas, such as its robust revenue growth, largely solid financial position with reasonable debt levels by most measures and solid stock price performance. However, as a counter to these strengths, we find that the growth in the company's earnings per share has not been good. You can view the full Denison Mines Ratings Report. Get more investment ideas from our investment research center.