NEW YORK ( TheStreet) -- Idexx Laboratories (Nasdaq: IDXX) is trading at unusually high volume Thursday with 1.4 million shares changing hands. It is currently at four times its average daily volume and trading up $3.23 (+4.5%) at $75.37 as of 12:46 p.m. ET. Idexx has a market cap of $4.1 billion and is part of the health care sector and drugs industry. Shares are up 4.2% year to date as of the close of trading on Wednesday. IDEXX Laboratories, Inc. develops, manufactures, and distributes products primarily for the companion animal veterinary, livestock and poultry, water testing, and dairy markets and provides related services. The company has a P/E ratio of 26.8, equal to the average drugs industry P/E ratio and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Idexx as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, growth in earnings per share, notable return on equity, good cash flow from operations and solid stock price performance. We feel these strengths outweigh the fact that the company is trading at a premium valuation based on our review of its current price compared to such things as earnings and book value. You can view the full Idexx 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 rising on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVUP to 95370 or select from multiple alert options.