Banco Santander Río S.A

What it is

Santander Argentina is a full-service commercial bank — current accounts, credit cards, mortgages, agribusiness loans, mutual funds, insurance — operating across 22 of Argentina’s 24 provinces. It describes itself as the leading private bank in Argentina by deposits, with more than 5.1 million clients served through 280 traditional branches, eight social-integration branches, three digital offices, and eleven Work Café locations.

The bank was incorporated on 14 May 1968, originally as Banco Río de la Plata, founded via the acquisition of Banco del Este by the Pérez Companc family. It changed its name to Banco Santander Argentina S.A. in April 2022.

Who owns it

Santander Argentina is a majority-owned subsidiary of Spain’s Santander Group, held through its Spanish holding vehicle ABLASA, which controls 79% of the bank’s equity and 99.3% of its outstanding shares. The free float on the Buenos Aires exchange is therefore thin — under 1% of outstanding shares — making BRIO primarily a local price-discovery vehicle rather than a deep trading market.

Santander Group’s ultimate controlling shareholder is Executive Chair Ana Botín and the Botín family, though the group itself is a publicly listed Spanish corporation. There is no Argentine family or state holding in the bank.

Who runs it

Alejandro Butti serves as CEO of Santander Argentina. Under Butti, the bank’s management committee is steering towards a 2025 growth phase, with a planned technology investment of more than €500 million over the next three years.

As of May 2024, Agustín Mariani was appointed CFO (Gerente de Gestión Financiera), succeeding Marcos Devoto, who departed after 31 years and moved to a board seat.

The money, in plain words

In 2024 the bank took in ARS 5.06 trillion (USD 3.46 bn, our calculation) in revenue and kept ARS 921 bn (USD 630.6 m, our calculation) as net profit — a net profit margin of 12.4%, solid for a bank operating in one of the world’s most volatile economies. Net profit rose 37.9% in peso terms year-on-year (our calculation), even as nominal revenue slipped 7.9% — a sign that cost discipline and falling credit-loss provisions did more for the bottom line than raw top-line growth.

For every peso of shareholders’ equity, the bank earns about 17 centavos a year — a return on equity of 17.1%, competitive globally for a regional bank. The balance sheet holds ARS 4.87 trillion (USD 3.33 bn, our calculation) in cash and liquid assets, with no short- or long-term debt recorded, leaving the bank in a strong net cash position (our calculation).

What it is doing now

The bank has relaunched mortgage lending and is positioning itself as a key partner in Argentina’s energy, mining, and agribusiness sectors — areas that stand to benefit most from the Milei government’s deregulation drive. Management says it will allocate €500 million in technology over the next three years, with SMEs, agribusiness, and mining as priority lending segments.

The bank closed 2024 with more than 5.1 million total clients, and its parent Santander Group delivered record full-year results in 2025, which provides a healthy capital backstop for the Argentine subsidiary.

What to watch

• Peso stability. The bank earns and reports in pesos; any sharp devaluation compresses dollar-equivalent earnings even when peso profits look robust.
• Mortgage revival. Argentina is relaunching a mortgage market that was essentially dormant for years; Santander’s early move here could be a meaningful source of loan growth — or a credit risk, depending on whether inflation stays down.
• The thin float. With barely 0.7% of shares outside ABLASA, BRIO’s Buenos Aires price can move sharply on small trades; the stock is better read as a credit story than an equity liquidity story.
• Parent capital allocation. If Santander Group decides to delist or restructure its Argentine unit — as it has done in other markets — minority holders would have little standing to resist.

This is news, not investment advice.