In the latest trading session, Southern Co. (SO) closed at $77.94, marking a -0.9% move from the previous day. This change lagged the S&P 500's 0.11% loss on the day. Elsewhere, the Dow lost 0.22%, while the tech-heavy Nasdaq lost 0.23%. Heading into today, shares of the power company had gained 0.51% over the past month, lagging the Utilities sector's gain of 0.56% and the S&P 500's gain of 3.51% in that time. Investors will be eagerly watching for the performance of Southern Co. in its upcoming earnings d ...