On November 26, 2014 BM&FBOVESPA announced “the tenth portfolio of the Corporate Sustainability Index (ISE), effective from January 5, 2015 to January 2, 2016. The new portfolio is composed of 51 stocks of 40 companies. The companies are drawn from 19 sectors and have a combined market capitalization of BRL 1.22 trillion, or 49.87% of the combined figure for all of the companies traded on BM&FBOVESPA, based on the close of trading on November 24, 2014 (in the previous year, combined market capitalization was BRL 1.14 trillion, the equivalent of 47.16% of the total, based on the close of trading on November 26, 2013).”
You may read the press release on the media room page of the BM&FBOVESPA internet site.