NEW YORK ( TheStreet) -- CACI International (NYSE: CACI) is trading at unusually high volume Thursday with 2.1 million shares changing hands. It is currently at four times its average daily volume and trading up $4.96 (+11%) at $49.96 as of 3 p.m. ET. CACI International has a market cap of $1.17 billion and is part of the services sector and diversified services industry. Shares are down 21.1% year to date as of the close of trading on Wednesday. CACI International Inc, through its subsidiaries, provides information technology (IT) and professional services to the U.S. federal government and commercial markets in North America and internationally. The company has a P/E ratio of 7.6, equal to the average diversified services industry P/E ratio and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates CACI International as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, largely solid financial position with reasonable debt levels by most measures, impressive record of earnings per share growth, increase in net income and attractive valuation levels. We feel these strengths outweigh the fact that the company shows weak operating cash flow. You can view the full CACI 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.