NEW YORK ( TheStreet) -- Shares of Zoltek Companies (Nasdaq: ZOLT) were gapping up Wednesday morning with an open price 13% higher than Tuesday's closing price. The stock closed at $10.19 Tuesday and opened today's trading at $11.51. The average volume for Zoltek Companies has been 260,600 shares per day over the past 30 days. Zoltek Companies has a market cap of $289 million and is part of the industrial goods sector and industrial industry. Shares are up 33.7% year to date as of the close of trading on Tuesday. Zoltek Companies, Inc., through its subsidiaries, develops, manufactures, and markets carbon fibers and technical fibers primarily in Europe, the United States, and Asia. The company has a P/E ratio of 46.3, above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Zoltek Companies 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, impressive record of earnings per share growth, compelling growth in net income and expanding profit margins. We feel these strengths outweigh the fact that the company has had lackluster performance in the stock itself. You can view the full Zoltek Companies 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.