OREANDA-NEWS. BM&FBOVESPA announces the second preview for the BOVESPA Index theoretical portfolio, which will be valid for the period of May 06-August 30, 2013, based on the closing of the April 15, 2013 session. The preview maintains the entrance of BR Properties (BR PROPERT ON) onto the Ibovespa portfolio, which is now made up of 70 stocks from 65 companies.

The five stocks with the heaviest weight in this index were: Vale PNA (8.698%), Petrobras PN (7.939%), OGX Petroleo ON (5.032%), Itauunibanco PN (4.482%) and Bradesco PN (3.476%).

In comparison, the stocks with the heaviest weighting in the Ibovespa portfolio for January 07-May 03, 2013 were: Vale PNA (8.933%), Petrobras PN (8.406%), OGX Petroleo ON (5.019%), Itauunibanco PN (4.413%) and Bradesco PN (3.344%).

BM&FBOVESPA regularly announces three new previews for the indices. The first preview is disclosed in the first trading session of the last month of the existing portfolio, the second in the trading session that follows the 15 th of the last month of the existing portfolio and the third in the last trading session or the last month of the existing portfolio. The Exchange also announces the portfolios of the other indices that it calculates. The changes are in the annexed files.