OREANDA-NEWS. July 21, 2011. The start of the four-month validity periods for theoretical portfolios for companies included in BM&FBOVESPA indices shall be changed as of September 2011, to the first Monday of January, May and September. At present the starting dates are on the first business days of these months.

The changes are set out in this table:

Portfolio Period

Current start date

New start date

Jan. to April

1st business day Jan.

1st Monday of Jan.

May to Aug.

1st business day May

1st Monday of May

Sep. to Dec.

1st business day Sep.

1st Monday of Sep.

If the first Monday of the month indicated above is not a business day, validity shall begin on the first business day that follows it.

Dates not to change for publication of portfolio composition previews

The three previews of the new portfolio compositions shall continue to be published thus:

1st preview – on the first trading session of the last month of the current portfolio;

2nd preview – on the trading session following the 15th of the last month of the current portfolio;

3rd preview – on the last trading session of the current portfolio.