Key Facts
—Stocks. São Paulo’s exchange, B3, halted share trading for 30 minutes at 8:57 a.m. ET after a plunge of more than 10%.
—Currency. The dollar rose about 12.5% to 5.60 reais (R$5.60) by 8:30 a.m. ET, from R$4.99 on Friday.
—Futures. Contracts on the Ibovespa, Brazil’s main stock index, fell nearly 20% at the worst point.
—Why. President Lula won re-election on Sunday with 51.79% of valid votes; markets had expected his rival to win.
—Power Index Brazil ranks 1st of 14 in The Rio Times Latin America Power Index, with 75.0 points (October 2026 edition).
Live tonight
Brazil’s runoff, live
The official TSE count for Flávio Bolsonaro and Lula, updated every minute (voting closed at 7 p.m. Brasília, 6 p.m. ET).
Brazil runoff polls · Polymarket and Kalshi odds · When results come · Brazil election poll data (CSV)
Prediction markets · who wins the runoff
Implied chance of winning Brazil’s presidency on 25 October, from traders’ prices.
Polymarket
Flávio Bolsonaro – · Lula – (US$249 million traded)
Kalshi (regulated in the US by the CFTC)
Flávio Bolsonaro 0.4% · Lula 99.6%
As of 25 October, 11:40 pm ET (03:40 Lisbon), updated every 20 minutes. Prices are bets, not polls, and can move fast.
Why we show this: prediction markets turn real-money bets into a live probability that moves within minutes of the news, which is why investors, campaigns and newsrooms in the United States now follow them closely. We show them next to polls and official results, never instead of them.
Brazil’s stock market had barely opened on Monday when it hit the emergency brake. At 9:57 a.m. in Brasília (8:57 a.m. ET), exchange B3 stopped share trading for 30 minutes after the Ibovespa, Brazil’s main stock index, fell more than 10% in the opening auction.
Investors had bet on a win by Flávio Bolsonaro, the conservative senator who led the first round on 4 October. Instead, President Luiz Inácio Lula da Silva won Sunday’s runoff with 51.79% of valid votes, according to the TSE, Brazil’s electoral court, and the real, Brazil’s currency, weakened sharply.
In Plain English
Ibovespa: the main gauge of Brazilian stocks, like the S&P 500 for Brazil. B3: the São Paulo exchange where Brazilian shares and futures trade.
Circuit breaker: an automatic pause that gives traders time to cool off. Futures: contracts to buy or sell at a set price later, which often move first.
How Far Did Stocks Fall?
Futures, which start trading an hour before shares, fell nearly 20% at their worst on Monday. They were still down about 17% at 10:10 a.m. in Brasília (9:10 a.m. ET), at 173,260 points.
The Ibovespa itself closed Friday at 205,082.56 points. A 10% fall from there is about 20,500 points.
What Are the Dollar and Interest Rates Saying?
The dollar climbed about 12.5% to R$5.60 by 9:30 a.m. in Brasília (8:30 a.m. ET), from R$4.99 on Friday. A weaker real makes imports and dollar debts costlier for Brazilian companies, while exporters paid in dollars, such as farmers and miners, gain.
Interest-rate futures moved too. Contracts known as DI, which show what traders expect Brazilian borrowing costs to be, put the January 2027 rate at 14.01% early in the session, up from 13.48% on Friday.
Longer contracts jumped more: January 2031 rose from 12.58% to 14.46%. That suggests traders now expect borrowing costs to stay high for longer.
Live Market IntelligenceBrazil — Live Market Board
Rio Times · Live Market Intelligence
Brazil — Live Market Board
+0.47%
205,082.56
+0.47%
69,879.62
-0.01%
10,595.52
-1.40%
3,017,221
—
2,540.10
+0.46%
57,021.19
+0.13%
| Instrument | Last | Change | YoY | Prev. | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| IBOV | 205,082.56 | +0.47% | +21.85% | 204,120.12 | 168,310 | 167,142 | — |
| USD/BRL | 5.16 | +0.01% | -5.13% | 5.16 | 5.18 | 5.14 | — |
| SELIC | 14.00% | — | — | — | — | — | |
| PETR4 | 41.64 | -0.05% | +35.19% | 41.66 | 41.97 | 41.15 | 41,499,400 |
| VALE3 | 72.97 | +0.83% | +30.75% | 72.37 | 73.54 | 72.66 | 17,658,000 |
| ITUB4 | 38.60 | -1.03% | +4.57% | 39.00 | 39.34 | 38.39 | 29,487,800 |
| BBDC4 | 16.85 | +0.36% | +3.50% | 16.79 | 16.90 | 16.67 | 19,416,900 |
| BBAS3 | 19.37 | +0.47% | +0.73% | 19.28 | 19.44 | 19.16 | 11,069,200 |
| B3SA3 | 14.26 | -0.21% | +12.73% | 14.29 | 14.47 | 14.11 | 33,037,800 |
| ABEV3 | 14.89 | -0.80% | +21.91% | 15.01 | 15.07 | 14.81 | 16,453,100 |
| WEGE3 | 47.59 | +0.49% | +29.99% | 47.36 | 48.08 | 47.36 | 3,364,600 |
| PRIO3 | 59.14 | -0.19% | +50.67% | 59.25 | 59.81 | 58.74 | 3,325,600 |
| SUZB3 | 41.33 | +2.35% | -23.55% | 40.38 | 41.48 | 40.35 | 3,914,900 |
| RENT3 | 34.68 | -0.09% | +0.84% | 34.71 | 34.96 | 34.35 | 7,979,100 |
| AZZA3 | 15.89 | -2.63% | -53.76% | 16.32 | 16.42 | 15.82 | 1,330,300 |
| CSNA3 | 4.30 | +0.47% | -42.65% | 4.28 | 4.41 | 4.26 | 10,076,100 |
| GGBR4 | 24.69 | +2.19% | +51.38% | 24.16 | 24.85 | 24.18 | 7,047,600 |
| ENEV3 | 24.21 | -1.38% | +70.49% | 24.55 | 24.64 | 23.99 | 9,297,000 |
Which Rules Kicked In?
B3 widened its futures limits for Monday only. The floor for Ibovespa futures went from a 10% daily fall to 15%, then to 20%.
These pauses exist so that a panic cannot feed on itself, and so that traders can read the news before they sell again. Share circuit breakers work in stages: a 30-minute pause at a 10% fall, one hour at 15%, and a pause of B3’s choosing at 20%.
A 30-minute pause from 9:57 a.m. runs to about 10:27 a.m. in Brasília (9:27 a.m. ET). Shares then restart through an auction, a short call period used to set a fresh opening price.
How Is Wall Street Reacting?
In US pre-market trading before the 9:30 a.m. ET open, the iShares MSCI Brazil ETF (EWZ), a fund that tracks large Brazilian companies, fell more than 25%. Pre-market prices are thin, so the move can change once regular trading begins.
BTG Pactual, a Brazilian investment bank, warned before the vote that a Lula win could cut the Ibovespa about 17%, to roughly 170,000 points, and push the dollar up as much as 15%. Monday’s early moves landed in that range.
What It Means for US Readers
Anyone holding Brazilian shares in the US, through EWZ or through American depositary receipts such as Petrobras, the state-run oil company, faces a steep repricing in dollars. The shares and the real fell together, which compounds the loss.
Travellers and expats gain purchasing power. At R$5.60 per dollar, a R$500 hotel night costs about US$89, against about US$100 on Friday.
For the wider picture, see our guide to Brazil’s economy.
What Is Not Known
It is not yet clear where the Ibovespa itself trades after the pause, or whether B3 keeps the wider futures limits on Tuesday. Nor is it known how the central bank or the government will respond.
Prices here are early moves and can change quickly. This report covers market reaction; official election results come from the TSE.
Frequently Asked Questions
Why did Brazil’s stock market stop trading on Monday?
B3, the São Paulo exchange, triggered a circuit breaker, an automatic pause, at 8:57 a.m. ET after the Ibovespa fell more than 10% at the opening auction. The pause was set at 30 minutes.
How much did the dollar rise against the real?
The dollar rose about 12.5% to R$5.60 by 8:30 a.m. ET, from R$4.99 on Friday, according to market data. Prices move quickly, so check a live quote.
Sources: B3 exchange notices and circuit-breaker rules · TSE (electoral court) results · B3 and interest-rate futures trading data, 26 October
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief
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