Editor's Note: TheStreet ratings do not represent the views of TheStreet's staff or its contributors. Ratings are established by computer based on metrics for performance (which includes growth, stock performance, efficiency and valuation) and risk (volatility and solvency). Companies with poor cash flow or high debt levels tend to earn lower ratings in our model Two out of the three major indices are trading lower today with the Dow Jones Industrial Average ( ^DJI) trading down 5 points (0.0%) at 15,100 as of Thursday, May 9, 2013, 12:45 PM ET. The NYSE advances/declines ratio sits at 1,176 issues advancing vs. 1,742 declining with 136 unchanged. The Chemicals industry currently is unchanged today versus the S&P 500, which is down 0.21. Top gainers within the industry include Williams Partners ( WPZ), up 1.3%, and E.I. du Pont de Nemours & Company ( DD), up 1.0%. On the negative front, top decliners within the industry include LyondellBasell Industries ( LYB), down 1.34, and PPG Industries ( PPG), down 0.73. TheStreet Ratings group would like to highlight 3 stocks pushing the industry higher today: 3. Terra Nitrogen Company L.P ( TNH) is one of the companies pushing the Chemicals industry higher today. As of noon trading, Terra Nitrogen Company L.P is up $7.47 (3.49) to $221.25 on heavy volume Thus far, 34,487 shares of Terra Nitrogen Company L.P exchanged hands as compared to its average daily volume of 19,600 shares. The stock has ranged in price between $217.50-$221.83 after having opened the day at $218.00 as compared to the previous trading day's close of $213.78. Terra Nitrogen Company, L.P. engages in the production and sale of nitrogen fertilizer products. It primarily offers anhydrous ammonia and urea ammonium nitrate solutions. Terra Nitrogen GP Inc. serves as the general partner of the company. Terra Nitrogen Company, L.P. Terra Nitrogen Company L.P has a market cap of $3.9 billion and is part of the basic materials sector. The company has a P/E ratio of 12.2, below the S&P 500 P/E ratio of 17.7. Shares are down 0.1% year to date as of the close of trading on Wednesday. TheStreet Ratings rates Terra Nitrogen Company L.P 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, notable return on equity, expanding profit margins and good cash flow from operations. We feel these strengths outweigh the fact that the company has had lackluster performance in the stock itself. Get the full Terra Nitrogen Company L.P Ratings Report now. Exclusive Offer: Jim Cramer's 'go-to' small/mid-cap guru Bryan Ashenberg only buys stocks he thinks could return 50-100%. See his top picks for 14-days FREE.