NEW YORK ( TheStreet) -- Immucor (Nasdaq: BLUD) is trading at unusually high volume Thursday with 1.7 million shares changing hands. It is currently at 4.1 times its average daily volume and trading up 91 cents (+4.5%) at $20.89 as of 3:51 p.m. ET. Immucor has a market cap of $1.4 billion and is part of the health care sector and drugs industry. Shares are up 0.8% year to date as of the close of trading on Wednesday. Immucor, Inc., an in vitro diagnostics company, engages in the development, manufacture, and sale of reagents and automated systems. The company has a P/E ratio of 16.8, equal to the average drugs industry P/E ratio and equal to the S&P 500 P/E ratio of 16.8. TheStreet Ratings rates Immucor as a hold. The company's strengths can be seen in multiple areas, such as its largely solid financial position with reasonable debt levels by most measures, expanding profit margins and good cash flow from operations. However, as a counter to these strengths, we also find weaknesses including a generally disappointing performance in the stock itself and disappointing return on equity. You can view the full Immucor 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.