# TIM S.A.

TIM S.A. is an other based in Longwood, Brazil.

## Overview

- **Organization type:** other
- **Headquarters:** Longwood, Brazil
- **Region:** Latin America
- **Address:** Rio de Janeiro, Brazil
- **Founded:** 1998
- **Assets under management:** Undisclosed
- **Website:** tim.com.br

## About

TIM S.A. is an SEC-registered investment adviser in LONGWOOD, FL, registered since 2012. The firm manages approximately $490 million in regulatory assets. It has 4 employees and 3 investment advisers.

## Sectors

- Telecommunications

## People

- Alberto Mario Griselli — Chief Executive Officer

## Questions

### Who controls TIM S.A. after Telecom Italia's exit?

TIM Brasil no longer has a single controlling shareholder. In 2022, Telecom Italia sold its majority stake to IHS Towers, which subsequently reduced its position. Today, TIM S.A. operates with a dispersed shareholding structure on the B3 stock exchange, managed by a professional board and executive team led by CEO Alberto Mario Griselli (per the firm's official communications).

### What role did the Oi asset acquisition play in TIM's scale?

In 2022, TIM participated in a consortium with Vivo and Claro to acquire Oi's mobile operations for roughly R$16.5 billion. TIM's portion added around 14.5 million subscribers and valuable spectrum, allowing it to close the gap with its two main competitors. The full network migration finished in January 2025, cementing a more balanced three-player market.

### Does TIM operate fiber-to-the-home broadband?

Yes, TIM Live is the company's FTTH broadband service, passing more than 15 million households primarily in Brazil's Southeast. It represents TIM's strategy to diversify revenue beyond mobile by becoming a convergent connectivity provider, competing with Claro's NET-branded cable network and Vivo's fiber offers.

### What spectrum bands does TIM hold for 5G?

TIM secured spectrum in the 3.5 GHz, 2.3 GHz, and 700 MHz bands during Brazil's 2021 5G auction. It was an early adopter of 5G standalone architecture in the country, launching commercial service in select cities in 2022 and expanding coverage through 2024, targeting enterprise use cases alongside consumer mobile broadband.

### How does TIM's structure differ from Vivo and Claro in Brazil?

Vivo is controlled by Spain's Telefónica, and Claro is the Brazilian arm of Mexico's América Móvil. TIM, by contrast, no longer answers to a foreign telecom parent after Telecom Italia's divestiture. This independence allows management to prioritize long-term infrastructure returns without the strategic pull of a global parent's media or content agenda.

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Last updated: 2026-06-03T20:00:00.000Z

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