NEW YORK ( TheStreet) -- Lincare Holdings (Nasdaq: LNCR) is trading at unusually high volume Friday with 3.4 million shares changing hands. It is currently at 4.1 times its average daily volume and trading up $1.57 (+6.3%) at $26.54 as of 4 p.m. ET. Lincare has a market cap of $2.15 billion and is part of the health care sector and health services industry. Shares are down 12.7% year to date as of the close of trading on Thursday. Lincare Holdings Inc. provides oxygen, respiratory, and other chronic therapy services to patients in the home. The company has a P/E ratio of 12.6, equal to the average health services industry P/E ratio and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Lincare 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, increase in net income and largely solid financial position with reasonable debt levels by most measures. We feel these strengths outweigh the fact that the company shows weak operating cash flow. You can view the full Lincare Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.