Almost every economic news report mentions the Ibovespa going up or down, but few people stop to understand what that number really represents.
What the index measures
The Ibovespa (Brazil’s main stock market index) is the leading performance indicator for stocks traded on B3, the Brazilian stock exchange. It includes the most actively traded stocks on the market, weighted mainly by the trading volume in previous sessions.
How the portfolio is reviewed
The index’s composition is reviewed periodically by B3. Companies may enter or leave the theoretical portfolio based on criteria such as liquidity, presence in trading sessions and representativeness within their sector. That is why today’s Ibovespa may have a very different composition from that of a few years ago.
Why it is used as a benchmark
- It serves as a “thermometer” of the Brazilian stock market’s mood.
- It is used as a benchmark to assess whether equity funds are performing well or poorly.
- It appears as a reference in financial products, such as index funds (ETFs).
Following the Ibovespa is useful for understanding the overall picture, but the performance of a specific stock can be quite different from the index as a whole.
The Ibovespa is not the only exchange or the only index
In addition to the Ibovespa, B3 calculates other indexes, such as the IFIX (real estate investment funds) and the Small Caps index (companies with smaller market capitalization). Each one tracks a different slice of the market.