Fitch Downgrades Oi S.A. to 'B'/Rating Watch Negative Feb 26, 2016 06:05PM
Fitch Report: What Investors Want to Know: Oi's Rating Depends on TIM Merger Feb 5, 2016 09:58AM
Fitch Rates American Tower's Debt Offering 'BBB'; Outlook Negative May 4, 2015 02:59PM