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. The Materials & Construction industry as a whole closed the day down 0.1% versus the S&P 500, which was unchanged. Laggards within the Materials & Construction industry included Tecnoglass ( TGLS), down 4.8%, Ecology and Environment ( EEI), down 5.1%, Pure Cycle ( PCYO), down 5.8%, MagneGas ( MNGA), down 3.4% and New Home Company ( NWHM), down 2.0%. TheStreet Ratings Group would like to highlight 3 stocks that pushed the industry lower today: MagneGas ( MNGA) is one of the companies that pushed the Materials & Construction industry lower today. MagneGas was down $0.03 (3.4%) to $0.81 on light volume. Throughout the day, 152,554 shares of MagneGas exchanged hands as compared to its average daily volume of 594,800 shares. The stock ranged in price between $0.80-$0.85 after having opened the day at $0.83 as compared to the previous trading day's close of $0.84. MagneGas has a market cap of $31.1 million and is part of the industrial goods sector. Shares are up 90.9% year-to-date as of the close of trading on Monday. Currently there is 1 analyst who rates MagneGas a buy, no analysts rate it a sell, and none rate it a hold. STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more.