NEW YORK ( TheStreet) -- Aetna (NYSE: AET) hit a new 52-week high Wednesday as it traded at $38.18 compared with its previous 52-Week high of $38.10. Aetna is changing hands at $38.06 with 1.6 million shares traded as of 10:42 a.m. ET. Average volume has been 3.9 million shares over the past 30 days. Aetna has a market cap of $15 billion and is part of the health care sector and health services industry. Shares are up 21.8% year to date as of the close of trading on Tuesday. Aetna Inc. operates as a diversified health care benefits company primarily in the United States. The company has a P/E ratio of 10.2, above the average health services industry P/E ratio of nine and below the S&P 500 P/E ratio of 23.4. TheStreet Ratings rates Aetna as a buy. The company's strengths can be seen in multiple areas, such as its solid stock price performance, compelling growth in net income and impressive record of earnings per share growth. We feel these strengths outweigh the fact that the company shows low profit margins. You can view the full Aetna Ratings Report. See all 52-week high stocks or get investment ideas from our investment research center.