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 111 points (0.7%) at 16,536 as of Tuesday, Jan. 7, 2014, 11:55 AM ET. The NYSE advances/declines ratio sits at 2,084 issues advancing vs. 856 declining with 147 unchanged. The Chemicals industry currently sits up 0.6% versus the S&P 500, which is up 0.6%. TheStreet would like to highlight 3 stocks pushing the industry higher today: 3. Sigma-Aldrich Corporation ( SIAL) is one of the companies pushing the Chemicals industry higher today. As of noon trading, Sigma-Aldrich Corporation is up $1.28 (1.4%) to $92.98 on light volume. Thus far, 145,948 shares of Sigma-Aldrich Corporation exchanged hands as compared to its average daily volume of 593,100 shares. The stock has ranged in price between $91.76-$93.13 after having opened the day at $91.91 as compared to the previous trading day's close of $91.70. Sigma-Aldrich Corporation, a life science and high technology company, develops, manufactures, purchases, and distributes various chemicals, biochemicals, and equipment worldwide. Sigma-Aldrich Corporation has a market cap of $11.1 billion and is part of the basic materials sector. The company has a P/E ratio of 23.6, above the S&P 500 P/E ratio of 17.7. Shares are down 2.5% year to date as of the close of trading on Monday. Currently there are 3 analysts that rate Sigma-Aldrich Corporation a buy, 3 analysts rate it a sell, and 7 rate it a hold. TheStreet Ratings rates Sigma-Aldrich Corporation as a buy. The company's strengths can be seen in multiple areas, such as its increase in stock price during the past year, growth in earnings per share, revenue growth, largely solid financial position with reasonable debt levels by most measures and good cash flow from operations. We feel these strengths outweigh the fact that the company has had somewhat disappointing return on equity. Get the full Sigma-Aldrich Corporation 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.