Octavio Lopes, senior partner of private equity firm GP Investments, is in the middle of raising what might be the largest private equity fund ever for Latin America. In a podcast recorded in Sao Paulo, Lopes discusses the prospects for investing in Brazil and Latin America, where he thinks commodity prices are headed, and how the discovery of oil in places like Brazil, Colombia and Mexico will affect the local and regional economy. An edited transcript of the podcast appears below:   Knowledge at Wharton: Could you tell us about GP Investments? Lopes: GP is the leading private equity firm in Latin America. We have been around for 15 years, structured as a typical private equity firm from around the globe with a slight difference in that we are usually the largest investors in our private equity funds. We see ourselves not only as managers of third-party capital but also as principal investors. Most of our investments have been done in Brazil, but we look at investments across the region.…