2013-01-16 14:33:20 - SADIF-Investment Analytics has applied its StockMarks™ stock-rating system to Oi SA and produced a Rating Update Report, rating the company's attractiveness to long-term investors.

Ilhavo, Portugal – SADIF Investment Analytics, announces a new Rating Update Report covering Oi SA (OIBR4). The report uses SADIF's powerful StockMarks™ stock rating system and contains important analysis for any current or potential Oi SA investor.

Report Summary: Oi SA is a low quality company with a neutral outlook. Oi SA has weak business growth and is run by passable management. The trend in Oi SA fair value exchange rate against its closest rated-competitor, Telefonica Brasil SA, has been depreciating over the past 2 weeks. When compared to its closest competitor, Oi SA shows similar undervaluation and is equally likely to underperform the market.

The 3-page report breaks down the Total StockMark into its three components – business, management and price,

performing an in-depth analysis of Oi SA for long-term investors.

The report has been distributed to Thomson Reuters. It is available in Investext from multiple professional platforms including Thomson Research, Thomson ONE Banker, DIALOG/INTELLISCOPE, Thomson Gale, West Services, Advisen, Alacra-Datadownlink, Factiva, INTERNET SECURITIES and LEXIS/NEXIS or directly from SADIF-Investment Analytics at:
www.sadifanalytics.com/stockmarks/company-ru-16-OIBR4

About SADIF-Investment Analytics:
SADIF-Investment Analytics is an independent investment research company covering sixteen different markets and over 12,000 companies. The StockMarks™ system is based on proven investment principles and is designed to drive long-term shareholder returns.