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SMR Stock Swings As NuScale Marks Key Safety And AI Milestones

TIM BOHEN•UPDATED SEP. 21, 2026, 12:34 PM ET
Reviewed by Ben Sturgilland Fact-checked by Ellis Hobbs

NuScale Power Corporation stocks have been trading up by 7.38 percent after upbeat headlines highlighted growing small modular reactor momentum

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Key Takeaways

  • NuScale and advanced materials group MillenniTEK produced first-of-a-kind boron-oxide pellets for a passive emergency core cooling system, a major safety and manufacturing step for SMR deployment.
  • NuScale Power is rolling out nuclear-specific AI tools from NPX and Nuclearn, with tests showing up to an 80% cut in time needed to find critical engineering data.
  • Shares of SMR jumped roughly 8–9% after the AI deployment news, signaling strong trader interest in NuScale’s digital strategy.
  • SMR later dropped 8.5% to $9.34 and then 12.5% to $8.94, showing heavy volatility without fresh negative fundamentals in the headlines.

Candlestick Chart

Live Update At 12:33:51 EDT: On Monday, September 21, 2026 NuScale Power Corporation stock [NYSE: SMR] is trending up by 7.38%! Discover the key drivers behind this movement as well as our expert analysis in the detailed breakdown below.

Quick Financial Overview

NuScale Power Corporation, trading under ticker SMR, is acting like a classic story stock: big technology promises, ugly income statement. NuScale generated just $31.5M in revenue over the last year, yet the market is valuing that stream at a steep price-to-sales ratio above 300. For traders, that screams “sentiment-driven name,” not steady cash machine.

Margin numbers back that up. SMR is still deep in the red, with very negative EBIT and profit margins and a recent quarterly net loss of about $50M on only $75,000 in operating revenue. Return on equity and return on assets are also sharply negative, confirming that NuScale is still firmly in the build-out phase.

But balance sheet strength stands out. SMR holds roughly $766M in cash and over $1.0B in cash plus short-term investments, with no long-term debt and a massive current ratio near 38. That gives NuScale time to execute its small modular reactor plan.

More Breaking News

On the chart, SMR has pulled back from an $11.18 high on 2026/09/08 to around $8.88 on 2026/09/21. The 5‑minute intraday tape shows tight consolidation around $8.80–$8.90, hinting that short-term selling pressure is cooling while traders wait for the next catalyst.

Why Traders Are Watching SMR Now

NuScale Power Corporation has given traders exactly what they want in a speculative energy name: real milestones, bold tech headlines, and wild price action. SMR is about next‑gen nuclear, and the company just logged two important updates that explain why this ticker keeps popping onto screens.

First, NuScale and partner MillenniTEK successfully fabricated first-of-a-kind boron‑oxide pellets for NuScale’s passive emergency core cooling system. That system is a key safety feature in NuScale’s NRC‑approved SMR design. For traders, this is not just lab news. It shows NuScale and MillenniTEK can actually manufacture critical safety components at scale, which pushes SMR one step closer to real commercial deployment and supply‑chain readiness.

Second, NuScale Power is leaning hard into AI. SMR is deploying nuclear‑specific AI tools from NPX and Nuclearn, including the AtomAssist platform, to speed up engineering work and knowledge management. Early tests say these tools can cut information‑search time by up to 80%. That matters. Faster access to codes, standards, and engineering methods can compress design cycles and help NuScale execute its SMR roadmap more efficiently.

The market already reacted once. After NuScale announced the AI rollout on 2026/08/25, SMR shares jumped roughly 8–9% in multiple sessions, even as the broader energy sector traded weak on lower oil prices. That tells traders the story is bigger than short-term commodity moves: the crowd is willing to pay up for NuScale’s AI‑plus‑nuclear angle.

Conclusion

The catch is volatility. After that August AI spike, NuScale Power Corporation has seen sharp downside. SMR dropped 8.5% to $9.34 in one 2026/09/11 session, then slid another 12.5% to $8.94 later that day, with no fresh negative fundamental headlines attached. That kind of action screams hot money, profit‑taking, and possibly weak hands bailing after a big run.

Yet the core story has not changed. SMR still has a massive cash pile, no long-term debt, and NRC‑approved technology. NuScale and MillenniTEK are moving the ball forward with boron‑oxide pellets for the passive emergency core cooling system. At the same time, the AI work with NPX and Nuclearn positions NuScale as a digital‑first nuclear player, which remains a rare pitch in the energy space.

For active traders, that mix means SMR is a momentum vehicle, not a widows‑and‑orphans utility stock. Big gaps, fast spikes, and hard pullbacks are all on the menu. As Tim Sykes likes to hammer home, “Volatility is opportunity for prepared traders, but only if you respect risk and cut losses quickly.” That dovetails with the risk‑management focus echoed across the day‑trading world; as Tim Bohen, lead trainer with StocksToTrade says, “Success in trading is more about cutting losses quickly than finding winners.” NuScale Power Corporation fits that lesson well right now: compelling catalysts, aggressive valuation, and a chart that rewards disciplined entries and exits far more than blind conviction.

This is stock news, not investment advice. StocksToTrade News delivers real-time stock market updates tailored to highlight the key catalysts driving short-term price movements. Our coverage is designed for active traders and investors who thrive in fast-moving markets, with a focus on volatile sectors like penny stocks, AI stocks, Robinhood stocks and other momentum plays. From earnings reports and FDA approvals to mergers, new contracts, and unusual trading volume, we break down the events that can spark significant price action.

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