Índice Bovespa

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The Bovespa Index (Índice Bovespa) is an index of about 50 stocks that are traded on the São Paulo Stock Exchange (Bovespa: BOlsa de Valores do Estado de São PAulo).

The index is composed by a theoretical portfolio with the stocks that accounted for 80% of the volume traded in the last 12 months and that were traded at least on 80% of the trading days. It's revised quarterly, in order to keep its representitiviness of the volume traded and in average the components of Ibovespa represent 70% of the all the stock value traded.

IBOVESPA is an accumulation index. Its index number represents the present value of a portfolio begun in January 2nd, 1968, with a starting value of 100 and taking into account share price increases plus the reinvestment of all dividends, subscription rights and bonus stocks received.

The index has been adjusted as follows:
1 – division by 100, on 10/03/1983
2 – division by 10, on 12/02/1985
3 – division by 10, on 08/29/1988
4 – division by 10, on 04/14/1989
5 – division by 10, on 01/12/1990
6 – division by 10, on 05/28/1991
7 – division by 10, on 01/21/1992
8 – division by 10, on 01/26/1993
9 – division by 10, on 08/27/1993
10 – division by 10, on 02/10/1994
11 – division by 10, on 03/03/1997.

For a list of the components of the index, check the article List of companies traded at Bovespa.