NEW YORK ( TheStreet) -- Shares of Aspen Technology (Nasdaq: AZPN) were gapping up Wednesday morning with an open price 11% higher than Tuesday's closing price. The stock closed at $18.01 Tuesday and opened today's trading at $20. The average volume for Aspen Technology has been 578,600 shares per day over the past 30 days. Aspen Technology has a market cap of $1.65 billion and is part of the technology sector and computer software & services industry. Shares are up 3.8% year to date as of the close of trading on Tuesday. Aspen Technology, Inc., together with its subsidiaries, provides integrated process optimization software solutions for manufacturers in process industries, and engineering and construction firms. TheStreet Ratings rates Aspen Technology as a 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 we feel that the company's cash flow from its operations has been weak overall. You can view the full Aspen Technology 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.