Utilities Led a Falling Market. Is That the AI Power Trade, or a Flight to Safety?

Utilities were the one place to hide on Wednesday. As the Nasdaq dropped 2.62% and the S&P 500 fell 1.4%, the utility sector rose 2.25%, the best showing among the eleven S&P groups. Constellation Energy climbed 4.84%. The VIX jumped to 19.8. For a corner of the market long treated as a bond substitute, leading on a hard down day would once have been simple to read: money running for cover. In 2026 the read is no longer simple. Utilities have spent the year as the market’s clearest bet on artificial intelligence, and Wednesday put both stories on the same tape. Was this a defensive reflex, or the AI power trade doing what it has done all year?

Twenty-year contracts for nuclear power

The case that this is growth rests on signed contracts. Constellation has locked in long-dated agreements to sell nuclear output to the largest technology buyers: a 20-year deal to supply Meta with 1.1 gigawatts from its Clinton plant in Illinois, and a separate arrangement to sell Walmart wholesale power from its Dresden site under two 15-year terms beginning in 2029. Those are decades of revenue for a company whose stock climbed again Wednesday. The demand behind them is already visible. Data-center electricity use is forecast to triple between 2024 and 2030, eventually reaching a tenth of all US consumption, according to Morningstar. To meet it, US utilities are on track to spend a record sum this year, estimated near $240 billion, on generation and grid. Constellation has told investors it expects free cash flow before growth spending to rise from $8.4 billion across 2026 and 2027 to between $11.5 billion and $13 billion by 2028 and 2029. If those numbers hold, the sector’s re-rating this year starts to look like the market catching up to a real demand shock.

A safe-haven bid, and Fitch turning negative

The skeptical case starts with the same tape. Utilities did not rally in isolation Wednesday. They rose alongside energy, up 1.20%, and materials, up 1.44%, the classic defensive and inflation-hedge corners, while the growth-heavy parts of the market fell. The trigger was macro. Renewed Middle East tension pushed crude sharply higher, reviving inflation worry, and the 10-year Treasury yield sat at 4.63%. On a day like that, buying regulated utilities for their yield is an old reflex, and it looks a great deal like what happened. The structural story also faces real friction. After a run of about 10% this year, Morningstar says the rally has left few utilities cheap. Fitch Ratings cut its outlook on the North American utility and power sector to deteriorating on June 12, citing political and regulatory resistance to the rate increases utilities need to recover their costs. That resistance is concrete. US utilities requested $18.6 billion in rate hikes in the first half of 2026, and with electricity prices up 6.9% over the prior year, regulators in higher-cost states may be slow to approve the recovery the data-center buildout assumes. Contracts with Meta and Walmart do not pay for new grid. Approved rates do.

What the data shows

Wednesday’s session priced the split cleanly. Utilities finished up 2.25%, the top sector, with Constellation Energy up 4.84%. Energy and materials joined them in the green. On the other side, technology slipped 0.28%, consumer discretionary lost 0.74% and communication services fell 0.75%, while the two headline indexes closed sharply lower, the S&P 500 off 1.4% and the Nasdaq off 2.62%. The VIX rose almost 19% to 19.8, and the 10-year yield held at 4.63%. The pattern is what a defensive rotation looks like. It is also what a sector with its own demand catalyst looks like on a day the rest of the market has a reason to sell. The tape does not settle it.

What would settle it

The near term brings concrete tests. NextEra Energy, the sector’s bellwether, reports second-quarter results on Friday, and the rest of the group’s prints follow, where management commentary on data-center demand and contracted backlog will carry more weight than the headline earnings. Rate-case decisions in the largest states will show whether regulators let utilities recover their buildout or throttle it. The durability of Wednesday’s bid matters too. If utilities hold their gains once crude and yields settle, the growth reading strengthens; if they give the gains back as the fear fades, the safe-haven reading does. New long-term power agreements would speak to the same question from the other direction. For now, the sector sits at the crossing point of the year’s two biggest forces, the AI buildout and the flight to safety, and Wednesday let it stand for both at once.

This is a general-market summary for information only — not investment advice, and not a recommendation regarding any security.