NEW YORK ( TheStreet) -- Novo Nordisk A/S (NYSE: NVO) is trading at unusually high volume Monday with 1.5 million shares changing hands. It is currently at 5.2 times its average daily volume and trading up $3.23 (+2.3%) at $144.71 as of 12:24 p.m. ET. Novo Nordisk A/S has a market cap of $81.61 billion and is part of the health care sector and drugs industry. Shares are up 22.7% year to date as of the close of trading on Friday. Novo Nordisk A/S, a healthcare company, engages in the discovery, development, manufacture, and marketing of pharmaceutical products in Denmark and internationally. The company operates in two segments, Diabetes Care and Biopharmaceuticals. The company has a P/E ratio of four, below the average drugs industry P/E ratio of 25.3 and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Novo Nordisk A/S 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, notable return on equity, expanding profit margins and good cash flow from operations. 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 Novo Nordisk A/S Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.