Oi S.A. is a Brazilian telecommunications company with operations divided into three main segments. Oi Solutions is the main business unit, representing 50% of consolidated revenue focused on Information and Communication Technology (ICT) services, especially cloud and UC&C (Unified Communications and Collaboration). The second relevant segment are domestic subsidiaries, which account for 39% of revenue. The third practice area encompasses legacy and wholesale operations, where the company focuses on migrating clients from copper-based networks to digital solutions.

R$63M

Market Cap • 11/10/2025

Nível 1

Listing Segment

1963

(62 years)

Founded

Rio de Janeiro

Headquarters • Rio de Janeiro

Banco do Brasil

Bookkeeper

PwC

Accounting firm

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Reclame Aqui11/9/2025