All three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading up 95 points (0.6%) at 16,447 as of Thursday, Sept. 3, 2015, 12:55 PM ET. The NYSE advances/declines ratio sits at 2,140 issues advancing vs. 838 declining with 150 unchanged.

The Utilities sector currently sits up 0.5% versus the S&P 500, which is up 0.5%. Top gainers within the sector include Brookfield Renewable Energy Partners ( BEP), up 1.9%, Huaneng Power International ( HNP), up 1.8%, NRG Energy ( NRG), up 1.7%, Praxair ( PX), up 1.2% and TransCanada ( TRP), up 1.0%.

TheStreet would like to highlight 3 stocks pushing the sector lower today:

3. Companhia De Saneamento Basico Do Estado De ( SBS) is one of the companies pushing the Utilities sector lower today. As of noon trading, Companhia De Saneamento Basico Do Estado De is down $0.09 (-2.2%) to $4.07 on light volume. Thus far, 790,578 shares of Companhia De Saneamento Basico Do Estado De exchanged hands as compared to its average daily volume of 2.2 million shares. The stock has ranged in price between $4.07-$4.27 after having opened the day at $4.12 as compared to the previous trading day's close of $4.16.

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Companhia de Saneamento Basico do Estado de Sao Paulo - SABESP provides basic and environmental sanitation services; and supplies treated water on a wholesale basis to residential, commercial, industrial, and governmental customers in the state of Sao Paulo. Companhia De Saneamento Basico Do Estado De has a market cap of $2.8 billion and is part of the utilities industry. The company has a P/E ratio of 3.4, below the S&P 500 P/E ratio of 24.2. Shares are down 33.9% year-to-date as of the close of trading on Wednesday. Currently there are 2 analysts that rate Companhia De Saneamento Basico Do Estado De a buy, 1 analyst rates it a sell, and 2 rate it a hold.

TheStreet Ratings rates Companhia De Saneamento Basico Do Estado De as a hold. The company's strengths can be seen in multiple areas, such as its compelling growth in net income, notable return on equity and reasonable valuation levels. However, as a counter to these strengths, we also find weaknesses including weak operating cash flow and a generally disappointing performance in the stock itself. Get the full Companhia De Saneamento Basico Do Estado De Ratings Report now.

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2. As of noon trading, Piedmont Natural Gas ( PNY) is down $0.52 (-1.4%) to $37.21 on light volume. Thus far, 116,014 shares of Piedmont Natural Gas exchanged hands as compared to its average daily volume of 356,600 shares. The stock has ranged in price between $37.08-$37.80 after having opened the day at $37.80 as compared to the previous trading day's close of $37.73.

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Piedmont Natural Gas Company, Inc., an energy services company, distributes natural gas in the United States. It operates in three segments: Regulated Utility, Regulated Non-Utility Activities, and Unregulated Non-Utility Activities. Piedmont Natural Gas has a market cap of $3.0 billion and is part of the utilities industry. The company has a P/E ratio of 20.9, below the S&P 500 P/E ratio of 24.2. Shares are down 4.3% year-to-date as of the close of trading on Wednesday. Currently there are no analysts that rate Piedmont Natural Gas a buy, 2 analysts rate it a sell, and 6 rate it a hold.

TheStreet Ratings rates Piedmont Natural Gas as a buy. The company's strengths can be seen in multiple areas, such as its growth in earnings per share, increase in net income, good cash flow from operations and solid stock price performance. We feel its strengths outweigh the fact that the company has had generally high debt management risk by most measures that we evaluated. Get the full Piedmont Natural Gas Ratings Report now.

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1. As of noon trading, Atmos Energy ( ATO) is down $0.39 (-0.7%) to $53.36 on average volume. Thus far, 342,455 shares of Atmos Energy exchanged hands as compared to its average daily volume of 566,600 shares. The stock has ranged in price between $53.20-$53.89 after having opened the day at $53.89 as compared to the previous trading day's close of $53.75.

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Atmos Energy Corporation, together with its subsidiaries, engages in the distribution, transmission, and storage of natural gas in the United States. It operates in three segments: Regulated Distribution, Regulated Pipeline, and Nonregulated. Atmos Energy has a market cap of $5.4 billion and is part of the utilities industry. The company has a P/E ratio of 17.5, below the S&P 500 P/E ratio of 24.2. Shares are down 3.6% year-to-date as of the close of trading on Wednesday. Currently there are 6 analysts that rate Atmos Energy a buy, no analysts rate it a sell, and 3 rate it a hold.

TheStreet Ratings rates Atmos Energy as a buy. The company's strengths can be seen in multiple areas, such as its solid stock price performance, growth in earnings per share, compelling growth in net income, good cash flow from operations and largely solid financial position with reasonable debt levels by most measures. We feel its strengths outweigh the fact that the company shows low profit margins. Get the full Atmos Energy Ratings Report now.

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If you are interested in one of these 3 stocks, ETFs may be of interest. Investors who are bullish on the utilities sector could consider Utilities Select Sector SPDR ( XLU) while those bearish on the utilities sector could consider ProShares UltraShort Utilities ( SDP).