A Fund Just Took a Fifth of Brazil’s Newly Privatized Water Giant Copasa

Brazil · Markets

The new Perfin Copasa stake of 20% shows that Brazil’s biggest water privatization in years has drawn in not just an operator to run the company, but a financial investor betting heavily on what comes next.

What happened on the exchange

On Tuesday, June 16, the privatization of Copasa, the water and sanitation company of the Brazilian state of Minas Gerais, was completed in a ceremony at the B3 exchange in São Paulo. The two phases of the share sale moved roughly eight point four billion reais, or about one point seven billion dollars.

The proceeds go to the state government, which was the only seller. It is the second-largest sanitation privatization ever carried out on the Brazilian stock market, behind only the 2024 sale of São Paulo’s Sabesp.

The buyer in control is Equatorial, one of Brazil’s largest power groups, which took a 30% reference stake for roughly five and a half billion reais, or about one point one billion dollars. The state slashed its own holding from about 50% to 5%, keeping a golden share with veto rights over strategic decisions.

The Perfin Copasa stake explained

The surprise of the day was not Equatorial, long expected to win control, but the size of the position taken by Perfin. The infrastructure-focused asset manager disclosed that it now holds rights over just over twenty percent of Copasa‘s share capital.

That is up from about 15% before the offer, and it makes Perfin the second-largest holder after the controlling shareholder. For a fund rather than an operator, that is an unusually large bite of a utility someone else now runs.

The structure is worth understanding because it is not a simple block of shares. Perfin holds roughly 13% directly in ordinary stock and built the rest through financial contracts.

A large slice, around 7%, sits in instruments called collars, in which the fund lends the underlying shares to counterparties while keeping economic exposure. The remainder comes from forward contracts and share-lending arrangements in which Perfin keeps its voting rights.

Why a fund wants a fifth of a utility

For a foreign reader, the logic is simpler than the financial plumbing. Perfin is the same house, backed by investment bank BTG Pactual, that helped anchor a R$10bn rescue of the energy group Cosan last year, so it knows how to take big infrastructure positions.

Its bet here is on the upside from privatization itself. Copasa shares have roughly doubled over the past twelve months, joining the Ibovespa, Brazil’s main share index, in January as the sale neared.

The wider story is Brazil’s sanitation push. A 2020 framework law set targets for universal water and sewage access, opening a long runway of investment and drawing private capital into a sector that was almost entirely state-run.

A controlled company with a deep-pocketed operator and a large, sophisticated financial investor alongside it is exactly the model the framework was meant to produce. For investors tracking Latin American infrastructure, Copasa is now a live test of whether that model delivers the promised returns.

The reference case is Sabesp, the São Paulo utility privatized in 2024 with the same Equatorial as its anchor investor. Since that sale, Sabesp has sharply raised its spending on pipes and treatment plants and posted strong profit growth, which is the outcome Minas Gerais is hoping to copy.

For Perfin, the attraction is that Copasa is no longer a sleepy state firm. The arrival of a private controller, the access to capital and the pressure to hit investment targets are the very things that lifted Sabesp’s share price, and the fund is positioning to capture the same move.

There are risks worth naming. The company still depends heavily on a single large municipal concession in the Belo Horizonte area, and Brazil’s high interest rates make the heavy borrowing that utilities rely on more expensive.

Even so, the deal closes a long chapter. After more than half a century in state hands, Minas Gerais has handed its water company to private owners and pocketed the proceeds to pay down its debts, while the market decides what the asset is really worth.

Frequently Asked Questions

What is the Perfin Copasa stake and how big is it?

Perfin, a Brazilian infrastructure-focused asset manager, disclosed that it holds rights over just above twenty percent of Copasa, the recently privatized water utility of Minas Gerais state. That makes the fund the second-largest holder, behind controlling shareholder Equatorial.

Does Perfin control Copasa now?

No, control sits with Equatorial, which bought a 30% reference stake and will run the company. Perfin is a financial investor with a large minority position, and much of its exposure is held through derivatives rather than outright shares.

Why does this deal matter for foreign investors?

It shows that Brazil’s drive to privatize water utilities is pulling in both operators and big financial players. The pairing of a strategic controller with a major fund is the template Brazil hopes to repeat as it tries to attract private money into basic infrastructure.