São Paulo Stocks: Ibovespa, Petrobras and Vale — 2026-09-13
The Ibovespa closed the week with a four-month high, driven by a "election trade" rally and strong bank shares, before pulling back slightly on Friday due to political noise. Foreign investors returned to the B3 after a heavy August outflow, while oil prices above $100 supported Petrobras, though Vale faced mixed pressure. The real hovered near 5.10 against the dollar as markets digested inflation data and election polling.
São Paulo Stocks: Ibovespa, Petrobras and Vale — 2026-09-13
Top developments
Ibovespa Closes at Four-Month High Before Friday Pullback
On Friday, September 11, the Ibovespa reached its best close in four months at 188,269 points after rising 1.42%, fueled by a rally in bank stocks and positive sentiment around the October elections. However, the index ended the day at 187,207 points, down 0.56%, as political noise from Brasília overshadowed Wall Street gains. Despite the Friday dip, the index posted its fourth consecutive weekly gain, reflecting strong demand for Brazilian assets amid reprecification of the electoral scenario.
Election Trade Drives Market Volatility
Analysts attribute the recent Ibovespa rally to positioning for candidates Flávio Bolsonaro and Augusto Cury, despite polling showing minimal movement in their favor. On September 10, the index hit its highest level since April as investors reacted to a more favorable electoral outlook for Flávio Bolsonaro (PL) for the October election. This "election trade" has become a primary driver of daily volatility, with new Datafolha and AtlasIntel polls cited as key catalysts for market moves.
Foreign Investors Return to B3
Foreign investors bought a net R$1.39 billion in B3 equities on September 2, marking a return after August saw R$18.1 billion leave the market. By September 8, the cumulative foreign inflow for September had reached R$5.98 billion, supporting the broader market rally. This inflow contrasts with earlier warnings from J.P. Morgan about foreign outflows pressuring the market due to fiscal and electoral risks.
Oil Above $100 Supports Petrobras; Real Weakens
Oil prices surpassed US$100 per barrel amid Middle East tensions, boosting Petrobras shares and contributing to the Ibovespa's strength. Despite the equity rally, the real weakened to 5.1264 per dollar on September 11, a 0.40% drop, as political uncertainty weighed on the currency. Earlier in the week, the real had strengthened to R$5.08, highlighting the volatility driven by both commodity prices and domestic politics.
Local view
Local media outlets such as Valor Econômico and InfoMoney highlighted the "election trade" as the dominant narrative, with Valor noting that the Ibovespa's ability to maintain gains was tested by profit-taking after the rally. Estadão emphasized the impact of upcoming Datafolha polls and inflation data (IPCA) on market sentiment, noting that investors were closely watching these indicators to gauge the sustainability of the rally. CNN Brasil pointed out that the strength of Brazilian equities was occurring despite declines in major US stock exchanges, underscoring the decoupling driven by local electoral expectations and commodity prices.
Context & numbers
- Ibovespa Close: 187,207 points (Sept 11), down 0.56% from previous session but up 11.77% over the past month.
- Peak Level: Reached 188,269 points intraday/closing high on Sept 11 before settling lower.
- USD/BRL: Closed at 5.1264 on Sept 11; traded near 5.10 earlier in the week.
- Selic Rate: Currently at 14.00% following the August Copom cut; Focus survey expects 13.75% by end-2026.
- Foreign Flows: Net inflow of R$5.98 billion in September as of Sept 8.
- Petrobras/Vale: Petrobras supported by oil >$100; Vale saw mixed performance with some sessions showing declines despite overall index strength.
On the radar
- Copom Meeting: Markets are watching for signals regarding future Selic cuts, with bets centered on whether the central bank will continue its easing cycle or pause.
- IPCA Inflation: The August IPCA print is a key driver for interest rate expectations and market volatility.
- Datafolha Polls: New electoral polls are expected to cause significant intraday swings in the Ibovespa as the October election approaches.
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