Editor's Note: Any reference to TheStreet Ratings and its underlying recommendation does not reflect the opinion of TheStreet, Inc. or any of its contributors including Jim Cramer or Stephanie Link. All three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading up 156 points (1.0%) at 15,978 as of Friday, Dec. 6, 2013, 11:45 AM ET. The NYSE advances/declines ratio sits at 2,203 issues advancing vs. 732 declining with 103 unchanged. The Health Care sector currently sits up 0.5% versus the S&P 500, which is up 0.9%. A company within the sector that fell today was Teva Pharmaceutical Industries ( TEVA), up 0.6%. Top gainers within the sector include Boston Scientific ( BSX), up 4.2%, Cigna ( CI), up 2.5%, Intuitive Surgical ( ISRG), up 2.2%, Thermo Fisher Scientific ( TMO), up 2.0% and Agilent Technologies ( A), up 2.0%. TheStreet would like to highlight 3 stocks pushing the sector lower today: 3. Cooper Companies ( COO) is one of the companies pushing the Health Care sector lower today. As of noon trading, Cooper Companies is down $7.89 (-5.9%) to $125.84 on heavy volume. Thus far, 1.1 million shares of Cooper Companies exchanged hands as compared to its average daily volume of 280,700 shares. The stock has ranged in price between $125.05-$127.40 after having opened the day at $126.66 as compared to the previous trading day's close of $133.73. The Cooper Companies, Inc. operates as a medical device company worldwide. Cooper Companies has a market cap of $6.5 billion and is part of the health services industry. The company has a P/E ratio of 21.1, above the S&P 500 P/E ratio of 17.7. Shares are up 44.6% year to date as of the close of trading on Thursday. Currently there are 7 analysts that rate Cooper Companies a buy, no analysts rate it a sell, and 1 rates it a hold. TheStreet Ratings rates Cooper Companies 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, solid stock price performance, impressive record of earnings per share growth and compelling growth in net income. Although no company is perfect, currently we do not see any significant weaknesses which are likely to detract from the generally positive outlook. Get the full Cooper Companies Ratings Report now. STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12-months. Learn more.