Are Investors Undervaluing Petrobras (PBR) Right Now? Posted byZacks Equity Research October 12, 2021 Leave a comment on Are Investors Undervaluing Petrobras (PBR) Right Now? Here at Zacks, our focus is on the proven Zacks Rank system, which emphasizes earnings estimates and estimate revisions to find great stocks. Nevertheless, we are always paying attention to…