OREANDA-NEWS. August 8, 2012. BM&FBOVESPA announces the first preview for the BOVESPA Index theoretical portfolio, which will be valid for the period of September 03-December 30, 2012, based on the closing of the July 31, 2012 session. The preview registered no changes in the Ibovespa portfolio, which is made up of 67 stocks from 62 companies.

The five stocks with the heaviest weight in this index were: Vale PNA (9.275%), Petrobras PN (8.295%), OGX Petroleo ON (5.274%), Itauunibanco PN (4.667%) and PDG Realt ON (3.586%).

For purposes of comparison, the stocks with the heaviest weighting in the Ibovespa portfolio for May 07-August 31, 2012 were: Vale PNA (9.226%), Petrobras PN (8.068%), OGX Petroleo ON (5.069%), Itauunibanco PN (4.690%) and PDG Realt ON (3.461%).