NEW YORK ( TheStreet) -- Vasco Data Security International (Nasdaq: VDSI) is trading at unusually high volume Tuesday with 949,525 shares changing hands. It is currently at four times its average daily volume and trading down $2.09 (-16.5%) at $10.58 as of 3:21 p.m. ET. Vasco Data Security International has a market cap of $488.4 million and is part of the technology sector and computer software & services industry. Shares are up 55.8% year to date as of the close of trading on Monday. VASCO Data Security International, Inc., through its subsidiaries, engages in the design, development, marketing, and support of hardware and software security systems that manage and secure access to information assets worldwide. The company has a P/E ratio of 39.2, equal to the average computer software & services industry P/E ratio and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Vasco Data Security International 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 the company's return on equity has been disappointing. You can view the full Vasco Data Security International Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center. Interested in other stocks that are falling on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVDOWN to 95370 or select from multiple alert options.