BM&FBOVESPA announces the Ibovespa theoretical index portfolio, which will be valid from September 5 to December 29, 2011, based on the closing of the September 2, 2011 trading session. The new portfolio now includes common shares in BR Mall and Cia Herriang, which brings its total to 68 stocks in 63 companies.
The five stocks with the heaviest weight in this index were: Petrobras PN (9.740%), Vale PNA (9.354%), OGX Petróleo ON (5.253%), Itauunibanco PN (4.436%) and BMFBOVEPA ON (3.447%).
For purposes of comparison, the stocks with the heaviest weight in the Ibovespa portfolio for March 2 to August 31, 2011 were: Vale PNA (10.346%), Petrobras PN (10.201%), OGX Petróleo ON (4.878%), Itauunibanco PN (4.127%) and BMFBOVESPA ON (3.693%).
BM&FBOVESPA regularly announces three previews of the new indexes 30 days (1st preview), 15 days (2nd preview) and one day (3rd preview) prior to the new quarterly portfolio. The Exchange also publishes the portfolios of the other indices calculated.