R$ 800 billion. That is the market value Petrobras reached at the close of trading on Wednesday (14) on B3, Brazil's stock exchange, according to G1. It is the first time the country's largest company, which is controlled by the federal government, has crossed that line.
For anyone with money in the company, the math is simple: someone who put R$ 1,000 into the common shares (PETR3) at the start of 2026 would now hold about R$ 2,100, as those shares have gained roughly 110% this year. The preferred shares (PETR4) are up about 100%. Because the federal government is the biggest shareholder, the rally also fattens the dividends the state company pays into public coffers.
What market value means
Market value is what it would cost to buy every share of a company at the day's price on the exchange. It works like the price tag investors place on the entire company, and it is not a measure of how much cash the firm holds.
On Wednesday, PETR4 rose 2.22% and PETR3 gained 1.94%. The jump over a matter of days was R$ 100 billion, since the company had topped R$ 700 billion for the first time only days earlier. For comparison, that gain is more than 13 times the R$ 7.5 billion the government freed up through an executive order to hold down diesel prices, according to G1's own reporting.
"Over the past months, I said many times that anyone betting against Petrobras would lose money. [...] The company is strong, efficient and increasingly able to generate value," said Petrobras president Magda Chambriard.
According to G1, the market reacted to higher international oil prices and to cost-equalization deals for the shared Berbigão and Sururu fields in the Santos Basin, signed with Shell, TotalEnergies and Petrogal. Under the settlement among the field partners, Petrobras will receive about US$ 859 million net by November 2026.
Operating numbers added to the momentum. Petrobras's own oil output in Brazil hit 2.7 million barrels a day in the second quarter, up 15% from the same period in 2025, and fuel production grew more than 10%, with record refinery use.
The previous record, R$ 700 billion, came after the announcement of a new oil discovery in ultra-deep waters of the Foz do Amazonas Basin, off the coast of Amapá state, in the so-called Equatorial Margin, Brazil's newest exploration frontier. Pricier oil cuts both ways for consumers: it fills the company's coffers, but it also pressures fuel prices and inflation, as G1 analysis notes. This report is based on G1's coverage, as independent reporting from another outlet could not be located by publication time.