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 All three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading up 47 points (0.3%) at 15,382 as of Tuesday, May 21, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 1,570 issues advancing vs. 1,367 declining with 136 unchanged. The Materials & Construction industry currently sits down 0.49 versus the S&P 500, which is up 0.2%. Top gainers within the industry include Fastenal Company ( FAST), up 1.4%, and Republic Services ( RSG), up 0.6%. On the negative front, top decliners within the industry include Lennar Corporation ( LEN), down 2.55, PulteGroup ( PHM), down 2.41 and Cemex S.A.B. de C.V ( CX), down 2.24. TheStreet Ratings group would like to highlight 3 stocks pushing the industry higher today: 3. Waste Connections ( WCN) is one of the companies pushing the Materials & Construction industry higher today. As of noon trading, Waste Connections is up $0.60 (1.50) to $40.62 on light volume Thus far, 142,221 shares of Waste Connections exchanged hands as compared to its average daily volume of 558,800 shares. The stock has ranged in price between $40.07-$40.70 after having opened the day at $40.12 as compared to the previous trading day's close of $40.02. Waste Connections, Inc., an integrated solid waste services company, provides solid waste collection, transfer, disposal, and recycling services. The company operates in four segments: Western, Central, Eastern, and Exploration and Production (E&P). Waste Connections has a market cap of $4.9 billion and is part of the industrial goods sector. The company has a P/E ratio of 29.1, above the S&P 500 P/E ratio of 17.7. Shares are up 18.4% year to date as of the close of trading on Monday. Currently there are 5 analysts that rate Waste Connections a buy, no analysts rate it a sell, and 2 rate it a hold. TheStreet Ratings rates Waste Connections as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, expanding profit margins, good cash flow from operations, solid stock price performance and increase in net income. We feel these strengths outweigh the fact that the company has had generally high debt management risk by most measures that we evaluated. Get the full Waste Connections 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.