NEW YORK ( TheStreet) -- Accuray (Nasdaq: ARAY) is trading at unusually high volume Thursday with 2.4 million shares changing hands. It is currently at 4.2 times its average daily volume and trading down 16 cents (-2.2%) at $6.99 as of 3:06 p.m. ET. Accuray has a market cap of $455.9 million and is part of the health care sector and health services industry. Shares are up 5.9% year to date as of the close of trading on Wednesday. Accuray Incorporated designs, develops, and sells the CyberKnife system, an image-guided robotic radiosurgery system used for the treatment of solid tumors. The company has a P/E ratio of 126.3, equal to the average health services industry P/E ratio and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Accuray as a hold. 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 and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including unimpressive growth in net income and weak operating cash flow. You can view the full Accuray 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.