NEW YORK ( TheStreet) -- Shares of Radvision (Nasdaq: RVSN) were gapping down Thursday morning with an open price 12.3% lower than Wednesday's closing price. The stock closed at $9.20 Wednesday and opened today's trading at $8.07. The average volume for Radvision has been 93,600 shares per day over the past 30 days. Radvision has a market cap of $170 million and is part of the technology sector and telecommunications industry. Shares are up 8.6% year to date as of the close of trading on Wednesday. RADVISION Ltd. engages in the design, development, and supply of various products and technologies that enable real-time voice, video, and data communications over the Internet and other networks based on the Internet Protocol (IP). TheStreet Ratings rates Radvision as a sell. The company's weaknesses can be seen in multiple areas, such as its feeble growth in its earnings per share, deteriorating net income, disappointing return on equity and weak operating cash flow. You can view the full Radvision Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping down? Get free SMS text alerts sent to you when the action happens by texting DOWN to 95370 or select from multiple alert options.