This week has started out poorly for nuclear stocks with Vistra down 3.1%, Constellation down 1.2%, and Cameco 2.4% as of 2:40 p.m. ET.
The past week saw the market split in performance. Camerco rose 5% while NuScale shares were hammered. In the background, the S&P 500 barely budged. Let’s dive into the biggest storylines driving the nuclear sector in the past week. Cameco surged on earnings momentum, NRG quietly outpaced the sector, and NuScale was hit hard by retail skepticism.
Nuclear Stock Performance Across the Past Week
| Ticker | Company | Weekly Change | YTD Change |
|---|---|---|---|
| CCJ | Cameco | +5.08% | +29.66% |
| NRG | NRG Energy | +3.39% | +12.26% |
| CEG | Constellation Energy | +1.65% | -17.00% |
| VST | Vistra | -1.99% | +4.18% |
| SMR | NuScale Power | -12.58% | -11.71% |
| SPY | S&P 500 | +0.15% | +0.13% |
Cameco Earns Its Surge: A Blowout Quarter Finally Gets Priced In
Cameco reported its Q4 2025 results on February 13, 2026, and the numbers were stunning. EPS came in at $0.37 (note: all figures adjusted to USD unless otherwise stated), beating consensus estimates by 14%. Revenue of $877 million was a 9% surprise.
The stock actually dipped initially after the report — classic post-earnings profit-taking — before recovering through the week. From the filing price of $118.36, shares fell to $112.94 the following day before climbing back to $121.35 by February 20. By February 23, the stock sat at $118.63, still up over 5% from where the week began.
What drove the full-year strength? Cameco’s Westinghouse investment — in which it holds a 49% stake — delivered $780 million CAD in adjusted EBITDA, up 61% from 2024. Uranium realized prices rose 9% to $91.44 CAD per pound. Full-year net earnings hit $590 million CAD, up from just $172 million in 2024.
CEO Tim Gitzel captured the longer arc well:
“Looking forward, we believe we will continue to see a durable trend of growth across the nuclear fuel cycle supported by electrification, energy security and decarbonization priorities, and the increasing recognition that nuclear must play a central role in addressing the world’s long-term energy challenges.”
— Tim Gitzel, CEO of Cameco
Reddit sentiment on CCJ leaned bullish heading into the week, with a monthly score of 77.6 and a quarterly score of 83.1, driven by posts framing uranium and rare earths as strategic materials on the verge of a breakout. The retail crowd was already constructive — the earnings just gave them confirmation.
Constellation Gets a Lift From Data Center Deals
Constellation gained 1.65% on the week, with shares rising to $293.20. The catalyst was a wave of coverage around direct power agreements between nuclear generators and data centers, with Constellation specifically cited in connection with a significant deal with CyrusOne. Wells Fargo maintained its Buy rating with a $460 price target, and Barclays held its Buy rating as well.
The broader theme is hard to ignore. Utilities like Southern Company raised their capital spending plans by 7% due to data center demand, and Evergy boosted its capital plan by 24% to $21.6 billion after inking contracts with Google and Meta. That tailwind lifts all power generators — and Constellation, as the largest nuclear operator in the US, sits at the center of it.
Still, context matters. Constellation is down 17% year-to-date after a strong run in prior years. The pending Calpine acquisition adds strategic scale but also complexity. Constellation Energy reports earnings tomorrow morning with analysts expecting adjusted earnings of $2.25 per share.