By Brazil Stock Guide – Petrobras (B3: PETR3, PETR4; NYSE: PBR) ended the first quarter of 2026 as the most profitable Western oil company among sector players with a market value above US$50 billion, according to a study by Elos Ayta. The Brazilian state-controlled producer posted net income of US$6.25 billion, ahead of global peers including Shell, Exxon Mobil and BP.
The ranking focuses on comparable Western oil companies and excludes non-Western giants such as Saudi Aramco, whose state-backed scale and market structure place it in a category of its own. Within that Western peer group, Petrobras led the table, followed by Shell Plc (LSE: SHEL; NYSE: SHEL), with US$5.69 billion in net income, Exxon Mobil Corp. (NYSE: XOM), with US$4.18 billion, and BP Plc (LSE: BP.; NYSE: BP), with US$3.84 billion.
Currency Tailwind
Petrobras’s leadership stands out because, in Brazilian reais, the company’s net income fell year over year. Profit declined to R$32.6 billion in the first quarter of 2026 from R$35.2 billion in the same period of 2025. In dollar terms, however, the comparison was helped by the appreciation of the Brazilian real.
The average Ptax exchange rate moved to R$5.26 per dollar in the first quarter of 2026 from R$5.85 a year earlier. In practice, the stronger real increased the dollar value of Petrobras’s profit, the currency reference most commonly used by international investors when comparing global oil companies.
Pre-Salt Advantage
Beyond the currency effect, the study highlights the productivity of Brazil’s pre-salt fields, widely seen as some of the most competitive offshore assets in the global oil industry. Scale, high-quality reserves and relatively low production costs remain key advantages for Petrobras versus other integrated oil majors.
The external backdrop also mattered. The outbreak of the war in the Middle East pushed Brent prices higher from February onward, with the benchmark trading above US$100 a barrel, while global investors continued to reward oil companies able to combine cash generation, operational efficiency and exposure to low-cost production.
Western Shift
In 2025, Exxon Mobil led the annual sample with net income of US$28.84 billion, while Petrobras ranked second with US$20.01 billion. In the first quarter of that year, Exxon also topped the group, with US$7.71 billion, compared with US$6.13 billion for Petrobras.
The first-quarter 2026 ranking therefore marks a meaningful shift among large Western oil companies. Petrobras does not lead the absolute global industry, where Saudi Aramco remains in a league of its own. But it did move ahead of Shell, Exxon Mobil and BP — a result that puts Brazil’s pre-salt back at the center of the global profitability debate in oil.
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