NEW YORK ( TheStreet) -- Shares of Northgate Minerals Corporation (AMEX: NXG) were gapping up Monday morning with an open price 37.5% higher than Friday's closing price. The stock closed at $3.15 Friday and opened today's trading at $4.33. The average volume for Northgate has been 2.8 million shares per day over the past 30 days. Northgate has a market cap of $905.1 million and is part of the basic materials sector and metals & mining industry. Shares are down 1.6% year to date as of the close of trading on Friday. Northgate Minerals Corporation, together with its subsidiaries, engages in exploring, developing, processing, and mining gold and copper deposits in Canada and Australia. TheStreet Ratings rates Northgate as a hold. The company's strengths can be seen in multiple areas, such as its increase in stock price during the past year, largely solid financial position with reasonable debt levels by most measures and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including feeble growth in the company's earnings per share, deteriorating net income and disappointing return on equity. You can view the full Northgate Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping up? Get free SMS text alerts sent to you when the action happens by texting UP to 95370 or select from multiple alert options.