Southern Co. (SO) closed the latest trading day at $78.21, indicating a +0.24% change from the previous session's end. The stock outperformed the S&P 500, which registered a daily gain of 0.16%. Elsewhere, the Dow gained 0.04%, while the tech-heavy Nasdaq added 0.49%.The power company's shares have seen an increase of 0.62% over the last month, surpassing the Utilities sector's loss of 3.23% and falling behind the S&P 500's gain of 3.22%.The upcoming earnings release of Southern Co. will be of great interes ...