NEW YORK ( TheStreet) -- NuVasive (Nasdaq: NUVA) is trading at unusually high volume Tuesday with 3.7 million shares changing hands. It is currently at four times its average daily volume and trading down $1.86 (-5.8%) at $30.50 as of 2:16 p.m. ET. NuVasive has a market cap of $1.3 billion and is part of the health care sector and health services industry. Shares are up 26.2% year to date as of the close of trading on Monday. NuVasive, Inc., a medical device company, engages in the design, development, and marketing of minimally disruptive surgical products and procedures for the spine. Its products are used in applications for spine fusion surgery. The company has a P/E ratio of 17.7, equal to the average health services industry P/E ratio and equal to the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates NuVasive as a hold. The company's strengths can be seen in multiple areas, such as its revenue growth, notable return on equity and reasonable valuation levels. However, as a counter to these strengths, we find that the growth in the company's earnings per share has not been good. You can view the full NuVasive 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.