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. One out of the three major indices are trading lower today with the Dow Jones Industrial Average ( ^DJI) trading down 23 points (-0.2%) at 15,311 as of Wednesday, Sept. 25, 2013, 12:55 PM ET. The NYSE advances/declines ratio sits at 1,760 issues advancing vs. 1,167 declining with 109 unchanged. The Technology sector currently sits up 0.6% versus the S&P 500, which is up 0.1%. On the negative front, top decliners within the sector include Tim Holding Company ( TSU), down 6.8%, Telecom Italia SpA ( TI), down 4.7%, Telecom Italia SpA ( TI.A), down 3.6%, Telefonica Brasil S.A ( VIV), down 3.0% and Telekomunikasi Indonesia (Persero) Tbk ( TLK), down 2.8%. Top gainers within the sector include Garmin ( GRMN), up 3.9%, Applied Materials ( AMAT), up 2.1%, Sap ( SAP), up 1.7%, Yahoo ( YHOO), up 1.5% and Accenture ( ACN), up 1.2%. TheStreet would like to highlight 4 stocks pushing the sector lower today: 4. Oi ( OIBR) is one of the companies pushing the Technology sector lower today. As of noon trading, Oi is down $0.21 (-9.2%) to $2.08 on average volume. Thus far, 2.4 million shares of Oi exchanged hands as compared to its average daily volume of 4.5 million shares. The stock has ranged in price between $1.99-$2.23 after having opened the day at $2.22 as compared to the previous trading day's close of $2.29. Oi S.A., through its subsidiaries, provides integrated telecommunication services for residential customers, companies, and governmental agencies in Brazil. It operates in three segments: Fixed-Line and Data Transmission Services, Mobile Services, and Other Services. Oi has a market cap of $3.9 billion and is part of the telecommunications industry. Shares are down 45.9% year to date as of the close of trading on Tuesday. Currently there are no analysts that rate Oi a buy, 2 analysts rate it a sell, and 3 rate it a hold. TheStreet Ratings rates Oi as a sell. The company's weaknesses can be seen in multiple areas, such as its feeble growth in its earnings per share, deteriorating net income, generally high debt management risk and generally disappointing historical performance in the stock itself. Get the full Oi 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.