It has been a while since my last article about Petrobras (NYSE: PBR ), Brazil's oil giant. Since that publication, despite the struggling oil market, the company's investors have managed to earn over 62% as I am writing this, thanks to the generousA research analyst and a freelance writer looking for value investment opportunities. I have several years of investing experience. I am mostly interested in writing about bargain stocks of large companies. My interest is not limited to American companies but ext ...