Brazil Stock Market Today: Index, Top Stocks, Trading Hours
Key Facts
—Where it stands. The Ibovespa closed at 205,430 points on Friday 16 October 2026, up about 27.5% since the end of 2025. Its highest close of the year, 209,067, came on 9 October.
—What it is. Brazil’s main stock index, made up of the most traded companies on the B3 exchange in São Paulo; it is quoted in reais.
—Why Americans care. Brazil’s biggest companies also trade in New York as ADRs (US-listed receipts), among them Petrobras (PBR), Vale (VALE) and Itaú (ITUB), and an ETF, the iShares MSCI Brazil fund (EWZ), gives broad exposure.
—Trading hours. The B3 equity session runs 10:00 a.m. to 4:55 p.m. Brasília time, which is 9:00 a.m. to 3:55 p.m. ET until the US clocks change on 1 November.
—Prediction markets. There is no market on the index itself. Polymarket prices a Bolsonaro win in the 25 October runoff at 78.6% and a November rate cut at 90.5% (19 October 2026, 2:34 a.m. ET).
Runoff · Sunday, 25 October
Brazil Runoff 2026: Lula vs Flávio
Date, polls, debates, odds and how the runoff works, updated every day.
Brazil runoff polls · Polymarket and Kalshi odds · When results come
Prediction markets · who wins the runoff
Implied chance of winning Brazil’s presidency on 25 October, from traders’ prices.
Polymarket
Flávio Bolsonaro 78.6% · Lula 21.5% (US$188 million traded)
Kalshi (regulated in the US by the CFTC)
Flávio Bolsonaro 79% · Lula 21%
As of 19 October, 3:20 am ET (08:20 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.
The Ibovespa, Brazil’s main stock index, closed at 205,430 points on Friday 16 October 2026, about 27.5% higher than at the end of 2025. It jumped 7.7% in a single day on 5 October, the first session after the first round of the presidential election.
Sources: Banco Central do Brasil (Selic, Focus survey, PTAX), IBGE (IPCA), EODHD (market quotes). Checked Oct 19, 07:30 UTC.
What the Ibovespa Is
The Ibovespa, short for Índice Bovespa, is the benchmark for Brazilian shares, in the way the S&P 500 is for American ones. It tracks a theoretical portfolio of the shares that trade most on the B3, the exchange in São Paulo.
The portfolio is reviewed every four months, in January, May and September, and the weights reflect the size of each company and how much its shares trade. The index is quoted in reais, so a move in the currency changes what it is worth to a dollar investor.
The Biggest Stocks in the Index
B3’s portfolio in force from 8 September to 31 December 2026 holds 76 securities from 74 companies, with a concentration in a few names. Vale (iron ore) leads with 11.16%, then Itaú Unibanco preferred shares with 8.61% and Petrobras preferred shares with 8.00%.
Petrobras ordinary shares add 4.89%, and Axia Energia, the former Eletrobras, follows at 4.85%. Because Petrobras trades in two share classes, the oil company’s combined weight of about 12.9% is larger than Vale’s.
Why US Readers Should Care
Most American investors own Brazil through ADRs and ETFs rather than on the B3 directly. Petrobras, Vale and Itaú all have New York listings that follow their Brazilian prices, and EWZ holds a broad basket of Brazilian shares.
EWZ tracks the MSCI Brazil index, not the Ibovespa, so the two move together but are not identical. Returns in dollars also depend on the real, which is why the board above shows the exchange rate next to the index.
How US Investors Buy Brazil
- ADRs: buy shares of Brazilian companies listed in New York, such as PBR, VALE and ITUB, through any US broker, in dollars.
- ETFs: buy EWZ or a similar fund, which holds a basket of Brazilian stocks and trades in New York hours.
- Direct access: some international brokers offer B3 shares in reais, which adds currency, tax and settlement steps. Check the rules and costs with the broker.
Trading Hours in US Time
The regular B3 session runs from 10:00 a.m. to 4:55 p.m. Brasília time, followed by a short closing call. In Eastern Time that is 9:00 a.m. to 3:55 p.m., while US daylight saving time lasts.
B3 adjusts its hours when US clocks change, so the schedule shifts after 1 November. The exchange is closed on Brazilian holidays, and its calendar is published on b3.com.br.
What Moves the Index
Interest rates matter most. Brazil’s central bank rate sits at 13.75%, and each cut makes bonds less attractive and tends to lift shares, particularly retailers and builders that borrow heavily.
Commodities weigh heavily because Vale sells iron ore and Petrobras sells oil. The dollar-to-real rate and politics add to the swings, and inflation sets the pace of rate cuts, as our inflation guide explains.
What Moved the Index Lately
- 2 and 5 October: the index gained 2.63% on Friday 2 October and then 7.7% on Monday 5 October, from 192,115 to 206,912, after the first round. Read how the vote moved the market.
- 9 October: the index closed at 209,067, its highest close of 2026.
- 16 October: it rose 0.54% to 205,430 as Petrobras preferred shares gained 4.04%, though it was down 1.74% on the week. See the full market report.
What Comes Next
- Friday 23 October, 8:00 a.m. ET: IPCA-15, Brazil’s mid-month inflation reading.
- Sunday 25 October: the presidential runoff; the first market reaction comes when B3 opens on Monday 26 October.
- Wednesday 4 November, 4:30 p.m. ET: the central bank’s rate committee announces its next interest-rate decision.
What Prediction Markets Say
- Polymarket, Brazil presidential election: Flávio Bolsonaro 78.6%, Luiz Inácio Lula da Silva 21.5% (US$187,805,325 traded).
- Polymarket, rate decision in November: a 25 basis point cut at 90.5% (US$68,952 traded).
Prices as of 2:34 a.m. ET, 19 October 2026. Prices are bets, not polls; Kalshi is regulated in the US by the CFTC.
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.
Frequently Asked Questions
What is the Ibovespa?
The Ibovespa is the main stock index of Brazil, tracking the most traded shares on the B3 exchange in São Paulo. It is quoted in reais and closed at 205,430 points on 16 October 2026.
What time does the Brazilian stock market open in US time?
The B3 equity session starts at 10:00 a.m. Brasília time, which is 9:00 a.m. ET while US daylight saving time lasts, and closes at 4:55 p.m. Brasília time. B3 changes its schedule after the US clocks change on 1 November.
How can a US investor buy Brazilian stocks?
Most use ADRs such as Petrobras (PBR) and Vale (VALE), or an ETF such as EWZ, through a normal US broker. Direct purchases on the B3 need an international broker and involve currency and tax steps.
Is EWZ the same as the Ibovespa?
No. EWZ tracks the MSCI Brazil index, which has a different set of stocks and weights. The two usually move in the same direction, but EWZ is priced in dollars.
Sources
B3, Ibovespa · B3, trading hours · Banco Central do Brasil · IBGE release calendar · iShares MSCI Brazil ETF (EWZ) · RT market data
Related: How to invest in Brazil’s stock market · Brazil economy 2026
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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