No material corporate news specific to Southern Company (SO) was available in the 30 days preceding this report. The dominant macro event in the period was the Federal Reserve's 16 September 2026 interest-rate decision, with markets pricing greater than a 90% probability of a 25 basis point increase to a target range of 3.75%–4.00%, marking the first such increase in the current cycle [Brief - 2026-09-16]. Separately, the Strait of Hormuz situation deepened as diplomatic efforts collapsed, with Iran transmitting a seven-day peace proposal to Washington through Qatari mediators, contributing to broader energy market disruption [Brief - 2026-09-27].
For the trailing twelve months ending 31 March 2026, Southern Company reported revenue of $30.18 billion, representing 8% year-over-year growth. Net income for the same period was $4.36 billion, with a net margin of 14.46% and an operating margin of 24.17%. EPS declined 0.83% year-over-year. The company held $981 million in cash against total debt of $1.67 billion. The stock traded at a price-to-earnings ratio of 21.41 as of the reporting date [SEC 10-Q - SO - 2026-03-31].
Insider activity in October 2026 registered one transaction, consisting of a disposal with a net value of approximately -$8,273, indicating minimal insider selling activity during the period [SEC Form 4 - SO - 2026-10]. On the institutional side, four notable managers opened new positions in SO during the most recent 13F reporting period: Citadel (Ken Griffin), Millennium (Izzy Englander), AQR Capital (Cliff Asness), and Bridgewater (Ray Dalio) each initiated holdings, representing the primary trigger for this report [SEC 13F - Citadel - Q3 2026; SEC 13F - Millennium - Q3 2026; SEC 13F - AQR Capital - Q3 2026; SEC 13F - Bridgewater - Q3 2026].
The prevailing macro environment features a 10-year Treasury yield of 5.24% and a 2-year yield of 4.78%, producing a normal yield curve spread of 46 basis points [FRED DGS10; FRED DGS2]. As a regulated utility, Southern Company carries interest-rate sensitivity given its capital-intensive structure and reliance on debt markets; the current rate environment represents a notable input to its financing costs.