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 down today with the Dow Jones Industrial Average ( ^DJI) trading down 24 points (-0.2%) at 15,303 as of Thursday, Sept. 12, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 960 issues advancing vs. 1,922 declining with 143 unchanged. The Basic Materials sector currently sits down 0.8% versus the S&P 500, which is down 0.3%. On the negative front, top decliners within the sector include Goldcorp ( GG), down 5.7%, Silver Wheaton Corporation ( SLW), down 4.9%, Barrick Gold Corporation ( ABX), down 4.3%, Newmont Mining Corporation ( NEM), down 3.2% and Valero Energy Corporation ( VLO), down 3.2%. A company within the sector that increased today was Suncor Energy ( SU), up 0.6%. TheStreet would like to highlight 5 stocks pushing the sector lower today: 5. Teck Resources ( TCK) is one of the companies pushing the Basic Materials sector lower today. As of noon trading, Teck Resources is down $1.05 (-3.7%) to $27.54 on average volume. Thus far, 1.2 million shares of Teck Resources exchanged hands as compared to its average daily volume of 2.6 million shares. The stock has ranged in price between $27.34-$28.02 after having opened the day at $27.94 as compared to the previous trading day's close of $28.59. In October 2008, TCK completed its acquisition of Fording Canadian Coal. TCK already owned 19.9% of Fording, and agreed to acquire the remainder for a combination of cash (approximately 84%) and stock. Teck Resources has a market cap of $16.2 billion and is part of the metals & mining industry. Shares are down 21.6% year to date as of the close of trading on Wednesday. Currently there are 9 analysts that rate Teck Resources a buy, no analysts rate it a sell, and 7 rate it a hold. TheStreet Ratings rates Teck Resources as a hold. The company's strengths can be seen in multiple areas, such as its largely solid financial position with reasonable debt levels by most measures, reasonable valuation levels and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including feeble growth in the company's earnings per share, deteriorating net income and disappointing return on equity. Get the full Teck Resources 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.