NEW YORK ( TheStreet) -- Shares of TGC Industries (Nasdaq: TGE) were gapping up Monday morning with an open price 11% higher than Friday's closing price. The stock closed at $10.01 Friday and opened today's trading at $11.11. The average volume for TGC has been 136,400 shares per day over the past 30 days. TGC has a market cap of $194.7 million and is part of the basic materials sector and energy industry. TGC Industries, Inc. provides geophysical services for clients in the oil and gas business in the United States and Canada. TheStreet Ratings rates TGC as a buy. 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, notable return on equity, good cash flow from operations and solid stock price performance. We feel these strengths outweigh the fact that the company shows low profit margins. You can view the full TGC Ratings Report. Get more investment ideas from our investment research center.