Luiz Inácio Lula da Silva won a fourth presidential term on 25 October with 51.79% of the valid vote, having placed second in the first round and with prediction markets pricing his victory at roughly one chance in four. Brazilian assets repriced violently the next session: the Ibovespa closed 13.88% lower, its steepest one-day fall since March 2020, with a circuit breaker halting trade for the first time since the pandemic, the real fell more than 8% and the Treasury cancelled fixed-rate bond auctions while repurchasing securities. The selling concentrated in domestic-facing equities and barely travelled across Latin America. The immediate test is Copom's decision on 4 November.
TL;DR
- Result: The Superior Electoral Court recorded 64,256,232 votes for Lula against 59,826,041 for Flávio Bolsonaro — 51.79% to 48.21%, a margin of 4,430,191 votes. Bolsonaro had led the first round 47.03% to 45.16%.
- Equities: The Ibovespa closed at 176,608.23 on 26 October, down 13.88%, after a circuit breaker halted trading for 30 minutes — the first since March 2020.
- Close against trough: The index traded as low as 169,516.43, which is 17.3% below Friday's close. Several reports carried that trough as the day's fall.
- Breadth: 68 of the index's 76 constituents declined on turnover of R$88.6bn, with Banco do Brasil ordinary shares down 29.33% and Vale up 4.01%.
- Currency: The real closed at 5.4027 to the dollar on Itaú's spot quotation, a fall of 8.21% from near 4.99 before the vote.
- Government bonds: The Treasury cancelled fixed-rate auctions and repurchased R$14.8bn of securities during the turmoil.
- Policy: The Selic stands at 13.75% after a 25 basis-point cut on 16 September. Copom meets on 3 and 4 November, with the decision on the second day.
- Congress: Bolsonaro's PL took 121 seats, the largest bloc in the lower house.
The Result Markets Had Not Priced
The outcome was not a surprise relative to the polls, which had the race inside the margin of error. It was a surprise relative to positioning. Datafolha's final survey showed the candidates tied at 50% of valid votes and Quaest had Flávio Bolsonaro ahead by 50.6% to 49.4%. Prediction markets did not agree: in the days before the vote they assigned Bolsonaro roughly a 76% to 79% probability, and Brazilian assets had given back only part of a post-first-round rally, with the Ibovespa about 2.4% below its 9 October record and the real near R$5.04.
The electoral record supports the surprise reading without depending on those odds. Bolsonaro won the first round with 47.03% against Lula's 45.16%, and the count ran against him as the runoff was tabulated: with 37% of votes counted he led 50.3% to 49.7%. The Superior Electoral Court's final figures were 64,256,232 votes to 59,826,041 — 51.79% against 48.21%, a margin of 4,430,191 votes, or roughly 3.6 percentage points. A candidate who led the first round by nearly two points lost the second by more than three.
The gap between a tied poll and a 76% probability is the instructive feature: the market's confidence was not derived from the survey evidence available. Monday's move is therefore better read as the unwinding of a position than as new information about Brazil's fiscal trajectory, which was known and unchanged.
Monday's Repricing: The Close, Not the Trough
The Ibovespa closed on Monday 26 October at 176,608.23 points, down 13.88%, its steepest single-session fall since March 2020. Selling was fast enough at the open that B3 triggered a circuit breaker after a 10% decline, suspending trading for 30 minutes — also the first use of that mechanism since March 2020. The index fell as low as 169,516.43, which sits 17.3% below Friday's close.
The distinction between those figures matters because both were published as the day's fall, and the two are not interchangeable. Measured from Friday's close, the trough and the closing level differ by 3.42 percentage points of return. Measured as a rally from the low, the recovery into the close was approximately 4.2%. Those are different calculations on different denominators and should not be reported as the same number. Any comparison against historical one-day moves has to use closing prices on both sides, so the defensible statement is that this was the worst close since the pandemic, not that the market fell 17%.
Context cuts both ways on severity. The index finished 15.5% below its 52-week high of 209,067 but remained 20.8% above its 52-week low of 146,173, and was still up around 20% over the preceding twelve months, so the move removed a large part of 2026's gains without reversing them. Monday's low near 169,500 is a reference point worth watching, though an observed intraday level rather than a tested support area.
What Sold, and What Rose
The composition of the selling identifies what investors repriced, and the breadth establishes how general it was. Sixty-eight of the Ibovespa's 76 constituents fell, on total turnover of R$88.6bn. The damage concentrated in companies dependent on Brazilian domestic demand and domestic interest rates: Banco do Brasil's ordinary shares fell 29.33%, Bradesco's preferred 21.70%, Itaú Unibanco's preferred 13.66% and holding company Itaúsa 12.54%. Petrobras fell 8.18% in the preferred line and 6.81% in the common, Ambev lost 7.85% and food group MBRF 10.60%.
Against that, Vale rose 4.01% to R$64.38, because a miner earning dollars abroad benefits mechanically when the real weakens. Eight constituents holding up against sixty-eight falling is not indiscriminate liquidation, which would have taken exporters down too.
The bank moves carry the clearest signal, because lenders are the most direct domestic expression of the sovereign's fiscal path: they hold government paper, fund themselves against local rates and earn from credit growth that higher rates suppress. A 29% fall in the largest state-controlled bank and 22% in a major private one are consistent with a repricing of Brazilian interest rates and public debt — consistent with it rather than proof of it, since positioning that favoured the other candidate, thin liquidity in a circuit-breaker session and forced selling could each have amplified the move beyond what the fiscal outlook alone justifies.
Latin American markets moved the same day, but not by much: Argentina's Merval fell 3.0%, Chile's IPSA 1.59%, Colombia's COLCAP 1.38% and Mexico's IPC 0.58%. Those are a wholly different order of move, establishing the event as country-specific and meaning a recovery in global equities or commodities will not by itself repair it.
The Shock Reaches Brazil's Government Bond Market
The least-reported dimension of the session is the most institutionally significant. During the turmoil the National Treasury cancelled scheduled fixed-rate bond auctions and repurchased approximately R$14.8bn of securities.
Those are two distinct actions and neither is central-bank currency intervention. Cancelling an auction means the Treasury declined to issue at the yields the market was demanding. Repurchasing securities means it bought its own paper back, supplying cash to holders and supporting prices. Together they indicate that the sell-off had reached the sovereign debt market with enough force that the issuer judged orderly primary issuance unavailable and chose to intervene in the secondary market instead.
That matters for reading the equity and currency moves, because it establishes the sell-off was not confined to risk assets. A government that cannot issue fixed-rate debt at acceptable yields faces a financing question as well as a market one, and the willingness to deploy R$14.8bn of buybacks is a measure of how disorderly conditions had become. It also establishes a precedent for the coming weeks: the first scheduled auctions after the result will show whether the cancellation was a one-session response to dysfunction or the start of a period in which the Treasury has to pay materially more for fixed-rate funding.
The Currency and the Fiscal Question
The real closed at 5.4027 to the dollar on Itaú's documented spot quotation, a fall of 8.21% from near 4.99 before the vote. Other contemporaneous reports give figures up to approximately 5.409 and 8.79% depending on the quotation cutoff used, and the differences are a matter of convention rather than disagreement — but a price from one series should not be paired with a percentage change from another.
Fiscal concern is the leading explanation for a move of that size. Brazil is rated Ba1 by Moody's and BB by both S&P and Fitch, all with stable outlooks, and carries public debt around 93% of GDP, so the currency is the most liquid expression of a view on the sovereign's debt path. It is not the only explanation available. A consensus positioned for the other candidate had to be unwound, and the Treasury's auction cancellation that same day points to conditions in which liquidity itself was a factor in the magnitude of price moves.
Two data points published the same day complicate the picture rather than resolving it. The September current account deficit came in at US$5.10bn against a US$4.5bn forecast, but foreign direct investment was US$11.29bn against a US$9.5bn forecast, up from US$7.40bn in August. A wider external deficit financed by stronger direct investment is materially different from one financed by portfolio flows, and the distinction bears on how durable the currency move proves. One month establishes neither trend.
Copom on 3 and 4 November Is the Immediate Test
The Selic rate stands at 13.75% following a 25 basis-point cut at Copom's meeting of 16 September, part of an easing cycle from a peak of 15.00%. With Focus survey inflation expectations for 2026 around 5.0%, the real policy rate remains close to 8.8%, among the most restrictive in the major emerging markets, and the spread against a US federal funds target of 3.75% to 4.00% is what has drawn carry into Brazilian assets. The committee next meets on 3 and 4 November, announcing its decision on the second day.
The currency move has complicated what looked like a straightforward continuation. Before the vote, prediction markets priced a November cut at better than 90%; afterwards, betting shifted toward a hold, with one venue showing roughly a 60% probability of no change. Those figures deserve limited weight — the comparable December market had traded only about US$46,000 in total — but the direction of the shift is the point, and it is consistent with a central bank weighing pass-through from an 8% currency move against an activity picture it has itself described as decelerating.