Oi, also known as Oi S.A., a publicly owned company headquartered in Brazil, was founded in 1998 with an estimated 19,860 employees, and reported $1.5 billion in revenue as of 2024. It functions as a tier 1 media tech buyer. The company operates as a Brazilian telecoms operator, formerly known as Telemar, specializing in telecoms services.
Fitch Ratings downgraded Brazilian operator Oi's long-term foreign and local-currency Issuer Default Ratings (IDRs) to 'D' from 'RD' and its national long-term rating to 'D(bra)' from 'RD(bra)' on September 15, 2026. Following these actions, Fitch withdrew all ratings for the firm, including those assigned to its senior secured notes due in 2027 and 2028, and ceased analytical coverage. Previously, on September 5, 2026, Brazil's telecom regulator Anatel granted conditional approval for the sale of Oi’s fixed-line unit, giving prior consent on September 3 for Método Telecomunicações to take control, though Oi remains responsible for the unit until all conditions are met. This followed Oi's agreement to sell its fixed-line services unit, known as UPI Telephone Services, to Método Telecomunicações for R$60.1 million (US$11.7m), an agreement reached on July 10, 2026.
Oi offers 5 products in the media and telecoms services industry. Oi's product portfolio comprises of telecoms.
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Oi's revenues were $1.5B in 2024. Caretta Research has split Oi's revenue into 3 different product categories, the largest of which is mobile services, which represents 35% of Oi's revenue.
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