Pre-market price movements and significant market activity for The Southern Company ($SO). Each move is flagged by Z-score statistical significance — showing when $SO moved beyond its typical daily range. 4 significant moves detected in the last 30 days.
Current Market State
What May Be Driving SO?
Southern Company rose 1.94% amid broader utility sector focus on data center power demands.
The Southern Company operates in the Utilities sector, specifically Electric Services. Sector-wide movement can contribute to individual stock volatility.
Recent Unusual Moves (30 days)
| Date | Session | Price | Move | Z-Score | Rel. Vol. |
|---|---|---|---|---|---|
| Oct 6, 2026 | Regular | $85.08 | +1.54% | 2.39 | 0.5× |
| Oct 6, 2026 | After-hours | $85.35 | +1.86% | 2.80 | 0.9× |
| Sep 29, 2026 | Regular | $83.59 | +1.51% | 2.54 | 0.9× |
| Sep 23, 2026 | Regular | $83.37 | -2.09% | -2.91 | 0.6× |
About SO Premarket Movers
This page tracks unusual market activity for The Southern Company (SO) across all trading sessions — pre-market (4:00 AM–9:30 AM ET), regular hours (9:30 AM–4:00 PM ET), and after-hours (4:00 PM–8:00 PM ET). A move is flagged as "unusual" when its Z-score reaches 2 or higher, meaning the price change is statistically significant relative to SO's recent daily volatility.
Z-score is calculated by comparing each move to the 20-day average return and standard deviation. A Z-score of 2.0 means the move is 2 standard deviations beyond the average — occurring in roughly the top 5% of daily moves. Relative volume (RVOL) compares current volume to the 20-day average volume at the same time of day, helping distinguish genuine institutional activity from noise.