OREANDA-NEWS. May 10, 2012. BM&FBOVESPA announces the BOVESPA Index (IBOVESPA) theoretical portfolio which will be valid for the period of May 07 to August 31, 2012, based on the closing of the May 04, 2012 session. There are no alterations to the new portfolio, which totals 68 stocks in 63 companies.

The five stocks with the heaviest weight in the index were: Vale PNA (9.226%), Petrobras PN (8.068%), OGX Petroleo ON (5.069%), Itauunibanco PN (4.690%) and PDG Realty ON (3.461%).

For purposes of comparison, the heaviest stocks in the IBOVESPA portfolio announced on January 02, 2012 to April 30, 2012 were: Vale PNA (9.286%), Petrobras PN (8.230%), OGX Petroleo ON (5.198%), Itauunibanco PN (4.695%) and Bradesco PN (3.364%).

BM&FBOVESPA regularly announces three previews of the new indexes 30 days, 15 days and one day prior to the new four-month portfolio. The Exchange also announces the portfolios of the other indices. The changes are in the annexed files.