Brent tops $100 as Middle East escalation threatens Brazil's inflation reprieve.

Brent crude broke through the psychological US$100-per-barrel barrier on Wednesday for the first time since late July, transforming a distant geopolitical conflict into an immediate inflationary risk for Brazil and calling into question the price-deceleration narrative that had been gaining traction in recent weeks.

The escalation in the Middle East — with U.S. forces destroying five Iranian tankers and Iran retaliating with strikes on a U.S. base in Jordan — lifted WTI to US$94.73 and Brent to US$100.07, a 2.2% gain on the session, according to Reuters. The move matters for Brazil across multiple dimensions simultaneously. On the positive side, it boosts Petrobras' revenues and expands the competitiveness of biofuels — an effect that, according to Tendências Consultoria analysts consulted by Valor Econômico, is already reflected in a 17.5% industrial recovery in the Center-West region this year, following a 31% decline in 2025. On the negative side, it raises fertilizer costs, pressures freight rates and erodes farm margins, precisely when agribusiness is showing signs of deceleration: the sector grew just 2% in the first quarter of 2026, versus 12.2% in the same period a year earlier.

The contradiction did not go unnoticed by markets. In Tuesday's session, the Ibovespa advanced 1.20%, touching an intraday high of 189,487 points, propped up by Vale, Petrobras, Itaú and Axia Energia — stocks that together represent 37.5% of the index's theoretical portfolio, according to InfoMoney. Foreign capital returned in force: in the first three trading sessions of September, net foreign flows into B3 stood at a positive R$3.9 billion. The dollar retreated 0.76%, responding both to commodity flows and to the domestic electoral picture, in which the latest BTG/Nexus polls show a statistical tie in the runoff between Lula and Flávio Bolsonaro — 46% to 45%, respectively. Uncertainty over the October ballot's outcome has paradoxically served as a short-term catalyst for risk assets: the market is pricing in the possibility of a change in fiscal management, which compresses risk premiums. The DXY index, which measures the dollar against six major currencies, also declined 0.32%, favoring emerging markets more broadly, in a trend that funds managed by JPMorgan Asset Management and BlackRock have begun to exploit with greater conviction, betting on emerging markets amid a widespread sell-off in developed-market sovereign bonds.

This environment of capital hunting for yield finds Brazil at a moment of upward revision in growth forecasts — the first in more than two months, according to the Focus survey — and of inflation declining for the second consecutive period. The IGP-DI posted a modest 0.06% rise in August, following a 0.86% deflation reading in July, with producer prices offsetting the decline at the consumer level. The 12-month IPCA through July stood at 4.44%, below the 4.5% ceiling of the target band. In the Valor 1000 edition, economists surveyed by the outlet estimate a 25-basis-point cut in the Selic by year-end, taking the rate to 13.75% — modest relief, but enough to signal that the tightening cycle may be nearing its end. The problem is that real interest rates remain around 9% per year, and household indebtedness has become the main obstacle to transmitting macroeconomic optimism to popular perception: with expensive credit and elevated delinquency, Brazilians do not feel confident even in a hot labor market.

It is against this backdrop that the Central Bank has prepared a two-pronged regulatory offensive. In addition to new rules to curb abusive practices in the digital credit offering — raising transparency and protecting consumers from aggressive loan proposals — tightening bank capital requirements has formally entered the market's radar following the BC's signal that tougher measures to contain the rise in indebtedness are on the way. The move is significant: the financial system's credit stock reached R$7.4 trillion in June, growing 9.7% over twelve months, but with progressive deceleration expected to bring the full-year figure to 9% — and those most harmed by bank selectivity are lower-income families and small and medium-sized enterprises.

The fragility of the credit fabric also shows up on the corporate front. Grupo Marabraz asked a São Paulo court for 180-day protection from creditor claims, requesting suspension of collections, release of blocked funds and maintenance of essential services — another chapter in a string of judicial reorganizations spanning retail to agribusiness. Meanwhile, the CVM ordered former banker Daniel Vorcaro to pay R$20 million for fraud in the management of the Brazil Realty real estate fund — his first conviction by the regulator — in a ruling that revives debate over the agency's supervisory capacity. ICC Brasil, an entity that groups companies such as Amazon and Banco do Brasil, published an open letter calling for ethics and thorough investigation at the STF amid the Banco Master scandal, while reporting by Valor Econômico reveals that Brazil has become the world's largest hub of regulated funds precisely when the CVM has lost the structure and credibility to supervise them.

On the state public finance front, Rio de Janeiro clearly illustrates subnational fiscal fragility: following the resignation of Governor Cláudio Castro in March, the interim administration is attempting to reverse a deficit that emerged as extraordinary revenues faded. Gross federal debt, meanwhile, reached 82.5% of GDP in July — R$10.9 trillion — with the interest bill consuming 8.7% of GDP and the nominal deficit approaching 10%, according to calculations published by former Central Bank president Roberto Campos Neto in an article in Folha de S.Paulo. With interest rates at 14% per year and growth projected at around 2%, the debt arithmetic remains openly hostile.

Two longer-term developments deserve special attention. The first is the race for rare earths: Viridis Mineração secured R$77.5 million from BNDES for a research center in Poços de Caldas, while Aclara Resources announced a joint venture with Japan's Jogmec to explore ionic clay deposits in Brazil — initiatives that fit within the context of the recently approved Critical Minerals Law and signal that the country is beginning to take seriously its role in the global clean-tech supply chain. The second is the quiet transformation of the productive structure: Volkswagen Caminhões e Ônibus struck a partnership with China's Saic to produce in Brazil, starting in 2027, a van that revives the Kombi concept — a sign that the Sino-European automotive alliance is consolidating in the local market, at the same time that vehicle production jumped 9.4% in August versus the same month a year earlier, according to Anfavea.

In the days ahead, attention will be split between the interministerial group's decision on the Tecon 10 auction at the Port of Santos — viewed by port operators as the last chance to hold it still in 2026 — and developments in the Middle East conflict, which will determine whether oil holds triple digits or retreats. A sustained rise in the commodity would put Brazilian inflation back on the radar and complicate both the monetary easing calendar and the fiscal math of whoever wins the October election. The presidential race, described by Eurasia Group as genuinely unpredictable and marked by widespread voter disenchantment with both candidates, remains the main source of political uncertainty — and the market, for now, prefers not to call the winner.