U.S. utility stocks are displaying uneven volatility patterns as the third quarter of 2026 approaches its end, with Citi analysis showing divergent trends across the sector.
The bank assessed 30-day implied volatility for a basket of utility names, identifying five companies with elevated levels: PG&E Corp, NRG Energy, Constellation Energy, Edison International and Ormat Technologies. California-based utilities accounted for a disproportionate share of the volatility, reflecting legislative and regulatory uncertainty in the state. Independent power producers also showed heightened sensitivity, driven by shifting datacenter energy policy and evolving business models.
Among the group, NRG Energy was the sole company to register a rise in implied volatility over the prior two weeks. At the opposite end, NET Power and Sempra Energy led declines in implied volatility during the same period, with NET Power moving from the highest levels to the largest reduction. Ormat Technologies is scheduled to hold an analyst day, which may influence its volatility profile.
Utilities at the lower end of the volatility range included Consolidated Edison, which recorded the lowest implied volatility in the basket. Other relatively stable names were Atmos Energy, Evergy, Duke Energy, WEC Energy Group, Southern Company and CMS Energy, all of which showed little change in implied volatility over the two-week window.
The divergence underscores how policy shifts and regional regulatory dynamics are reshaping risk perceptions across the utility sector as investors prepare for quarter-end positioning.
