All three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading up 76 points (0.5%) at 15,300 as of Tuesday, July 9, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 2,101 issues advancing vs. 849 declining with 106 unchanged. The Health Care sector currently sits down 0.3% versus the S&P 500, which is up 1.2%. Top gainers within the sector include Regeneron Pharmaceuticals ( REGN), up 2.1%, Celgene Corporation ( CELG), up 1.9%, WellPoint ( WLP), up 1.6%, Cigna ( CI), up 1.5% and Alexion Pharmaceuticals ( ALXN), up 1.5%. On the negative front, top decliners within the sector include Intuitive Surgical ( ISRG), down 17.9%, Quest Diagnostics ( DGX), down 5.2%, Laboratory Corporation of America Holdings ( LH), down 4.3% and Abbott Laboratories ( ABT), down 0.9%. TheStreet would like to highlight 5 stocks pushing the sector higher today: 5. Aetna ( AET) is one of the companies pushing the Health Care sector higher today. As of noon trading, Aetna is up $0.72 (1.1%) to $63.78 on light volume. Thus far, 1.0 million shares of Aetna exchanged hands as compared to its average daily volume of 3.0 million shares. The stock has ranged in price between $63.37-$63.93 after having opened the day at $63.55 as compared to the previous trading day's close of $63.06. Aetna Inc. operates as a diversified health care benefits company in the United States. The company operates in three segments: Health Care, Group Insurance, and Large Case Pensions. Aetna has a market cap of $20.4 billion and is part of the health services industry. Shares are up 35.1% year to date as of the close of trading on Monday. Currently there are 10 analysts that rate Aetna a buy, no analysts rate it a sell, and 6 rate it a hold. TheStreet Ratings rates Aetna as a buy. The company's strengths can be seen in multiple areas, such as its solid stock price performance, revenue growth, attractive valuation levels, largely solid financial position with reasonable debt levels by most measures and growth in earnings per share. We feel these strengths outweigh the fact that the company shows weak operating cash flow. Get the full Aetna Ratings Report now. 3x UPSIDE POTENTIAL: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12-months. Learn more.