In this article, we are going to discuss the energy stocks that are gaining this week.

The American uranium sector received a massive boost this week after the price of the nuclear fuel soared to over $80 per pound, the highest in ten months. The rally follows a statement by US Energy Secretary Chris Wright that the country is looking to boost its strategic uranium reserves to buffer against Russian supplies and increase confidence in the long-term prospects of nuclear power generation.

Mr. Wright stated the following at the IAEA’s annual general conference in Vienna:

“We’re moving to a place — and we’re not there yet — to no longer use Russian enriched uranium. We hope to see rapid growth in uranium consumption in the US from both large reactors and small modular reactors. The size of that right buffer would grow with time. We need a lot of domestic uranium and enrichment capacity.”

Following these comments by the Trump administration’s top energy official, physical fund Yellow Cake raised $125 million to purchase 1.33 million pounds of uranium from Kazatomprom at a discounted price, echoing similar moves from industry heavyweight Sprott that triggered a rally in the nuclear fuel prices earlier in June.

Our Methodology

To collect data for this article, we have referred to several stock screeners to find energy stocks that have surged the most between September 16 and September 23, 2025. The following are the Energy Stocks that Gained the Most This Week. The stocks are ranked according to their share price surge during this period.

Why are we interested in the stocks that hedge funds pile into? The reason is simple: our research has shown that we can outperform the market by imitating the top stock picks of the best hedge funds. Our quarterly newsletter’s strategy selects 14 small-cap and large-cap stocks every quarter and has returned 373.4% since May 2014, beating its benchmark by 218 percentage points (see more details here).

10. Denison Mines Corp. (NYSEAMERICAN:DNN)

Share Price Gains Between Sep 16 – Sep 23: 12.8%

Denison Mines Corp. (NYSEAMERICAN:DNN) is a uranium exploration and development company with interests focused in the Athabasca Basin region of northern Saskatchewan, Canada.

Denison Mines Corp. (NYSEAMERICAN:DNN) shot up after uranium futures in the US surged to above $80 per pound this week, the highest in ten months. The price hike comes after US Energy Secretary Chris Wright stated that the country is looking to boost its strategic uranium reserve to reduce reliance on Russian supplies and increase confidence in the long-term prospects of nuclear power generation.

Moreover, it was recently revealed that Denison Mines Corp. (NYSEAMERICAN:DNN) has invested over $1 million in Foremost Clean Energy, which the latter will use to advance exploration of its 330,000-acre uranium portfolio in Saskatchewan’s Athabasca Basin and for general corporate purposes.

9. Solaris Energy Infrastructure, Inc. (NYSE:SEI)

Share Price Gains Between Sep 16 – Sep 23: 21.23%

Solaris Energy Infrastructure, Inc. (NYSE:SEI) designs and manufactures specialized equipment for oil and natural gas operators in the United States.

Solaris Energy Infrastructure, Inc. (NYSE:SEI) continues to jump after a recent regulatory filing revealed that CEO William A. Zartler purchased 10,000 shares of the company’s stock valued at approximately $248,300. Moreover, the company’s CFO, Kyle S. Ramachandra,n also acquired 2,000 shares for around $50,000.

For investors, these purchases reflect the top leadership’s confidence in the company’s future success. As of the writing of this piece, the share price of Solaris Energy Infrastructure, Inc. (NYSE:SEI) has surged by over 35% since the beginning of 2025.

8. New Fortress Energy Inc. (NASDAQ:NFE)

Share Price Gains Between Sep 16 – Sep 23: 23%

New Fortress Energy Inc. (NASDAQ:NFE) owns and operates natural gas and LNG infrastructure and an integrated fleet of ships and logistics assets to rapidly deliver turnkey energy solutions to global markets.

After plummeting to a record low earlier this month, New Fortress Energy Inc. (NASDAQ:NFE) bounced back after it was announced that the company had reached a seven-year, $4 billion agreement to supply Puerto Rico with LNG. The deal, which includes a three-year extension option, offers a significant boost to New Fortress, which has been struggling with mounting debt, delayed projects, and profitability challenges.

Despite the recent uptick, New Fortress Energy Inc. (NASDAQ:NFE) has fallen by almost 85% since the beginning of the year.

7. enCore Energy Corp. (NASDAQ:EU)

Share Price Gains Between Sep 16 – Sep 23: 23.11%

enCore Energy Corp. (NASDAQ:EU) engages in the acquisition, exploration, and development of uranium resource properties in the United States.

enCore Energy Corp. (NASDAQ:EU) shot up after uranium futures in the US soared to a 10-month high of over $80 per pound this week. The uptick comes after US Energy Secretary Chris Wright stated that the country is looking to boost its strategic uranium reserve to buffer against Russian supplies and increase confidence in the long-term prospects of nuclear power generation.

Moreover, enCore Energy Corp. (NASDAQ:EU) received a significant boost recently after it was announced that the U.S. Environmental Protection Agency had denied a review petition against permits for its Dewey Burdock uranium project. enCore said that the project remains on a federal fast-track permitting program.

6. Energy Fuels Inc. (NYSEAMERICAN:UUUU)

Share Price Gains Between Sep 16 – Sep 23: 24.31%

Next on our list of Energy Stocks Gaining the Most this Week is Energy Fuels Inc. (NYSEAMERICAN:UUUU), a leading US-based critical minerals company, focused on uranium, rare earth elements, heavy mineral sands, vanadium, and medical isotopes.

Energy Fuels Inc. (NYSEAMERICAN:UUUU) soared to a 10-year high after uranium futures in the US soared to over $80 per pound this week, the highest in ten months. The price surge comes after US Energy Secretary Chris Wright revealed that the country is looking to boost its strategic uranium stockpile to buffer against Russian supplies and increase confidence in the long-term prospects of nuclear power generation.

Following the recent uptick, Energy Fuels Inc. (NYSEAMERICAN:UUUU) has gained more than 50% over the last month.

5. Uranium Royalty Corp. (NASDAQ:UROY)

Share Price Gains Between Sep 16 – Sep 23: 26.91%

Uranium Royalty Corp. (NASDAQ:UROY) is a pure-play uranium royalty company focused on gaining exposure to uranium prices by making strategic investments in uranium interests.

Uranium Royalty Corp. (NASDAQ:UROY) rose to a three-year high after uranium futures in the US soared to a 10-month high of over $80 per pound this week. The price hike comes after U.S. Energy Secretary Chris Wright signaled plans to increase the national strategic uranium stockpile and reduce reliance on imports from Russia.

Following the recent boost, Raymond James downgraded Uranium Royalty Corp. (NASDAQ:UROY) from ‘Outperform’ to ‘Market Perform’, but increased its price target from C$4.5 to C$5.

4. Centrus Energy Corp. (NYSEAMERICAN:LEU)

Share Price Gains Between Sep 16 – Sep 23: 29.52%

Centrus Energy Corp. (NYSEAMERICAN:LEU) is a trusted supplier of nuclear fuel and services for the nuclear energy industry.

Centrus Energy Corp. (NYSEAMERICAN:LEU) soared to a 10-year high this week after uranium futures in the US soared to over $80 per pound, the highest in ten months. The rally comes after U.S. Energy Secretary Chris Wright signed the Trump administration’s plans to boost the national strategic uranium reserves and reduce reliance on Russian imports.

Centrus Energy Corp. (NYSEAMERICAN:LEU) also made headlines last month after the company signed an MoU with Korea Hydro & Nuclear Power and POSCO International to expand its uranium operations in Ohio, indicating strong growth potential.

3. Fluence Energy, Inc. (NASDAQ:FLNC) 

Share Price Gains Between Sep 16 – Sep 23: 36.13%

Fluence Energy, Inc. (NASDAQ:FLNC) is a global market leader delivering intelligent energy storage and optimization software for renewables and storage.

Fluence Energy, Inc. (NASDAQ:FLNC) continued to surge this week after it was revealed that DRI, the EU renewables division of Ukraine’s DTEK Group, has selected the company to supply battery storage units for its 133 MW Trzebinia project in Poland.

Julian Jansen, Managing Director of Growing Markets at Fluence Energy, Inc. (NASDAQ:FLNC), stated:

“Poland has the potential to be one of the five largest European energy storage markets by 2030. We look forward to further investment in our Polish operations and team, supporting grid resilience and energy security across Central and Eastern Europe.”

It must be noted that earlier this month, it was also reported that Fluence Energy, Inc. (NASDAQ:FLNC) is set to provide the technology for two large battery energy storage systems (BESS) projects in Switzerland, with a combined capacity of 58.6 MW.

2. Energy Vault Holdings, Inc. (NYSE:NRGV)

Share Price Gains Between Sep 16 – Sep 23: 40.71%

Next on our list of Energy Stocks that Gained the Most this Week is Energy Vault Holdings, Inc. (NYSE:NRGV), which develops and deploys utility-scale energy storage solutions in the United States, Australia, and internationally.

Energy Vault Holdings, Inc. (NYSE:NRGV) shot up after a string of notable purchases of the company’s stock by CEO Robert Piconi, reflecting the chief executive’s confidence in the company’s future success. Moreover, Energy Vault Holdings, Inc. (NYSE:NRGV) Director Larry Paulson also acquired 20,000 shares of the company’s stock, valued at $47,800.

Following the recent rally, Energy Vault Holdings, Inc. (NYSE:NRGV) has gained more than 98% over the last month.

1. Oklo Inc. (NYSE:OKLO)

Share Price Gains Between Sep 16 – Sep 23: 48.86%

Backed by OpenAI’s Sam Altman, Oklo Inc. (NYSE:OKLO) develops advanced fission power plants to provide clean, reliable, and affordable energy at scale to customers in the United States.

Oklo Inc. (NYSE:OKLO) skyrocketed to an all-time high this week after the company held a groundbreaking event for the Aurora-INL sodium-cooled fast reactor, its first Aurora power plant, at Idaho National Laboratory.

Jacob DeWitte, co-founder and CEO of Oklo Inc. (NYSE:OKLO), stated:

“This opportunity positions us to build our first plant more quickly. We have been working with the Department of Energy and the Idaho National Laboratory since 2019 to bring this plant into existence, and this marks a new chapter of building. We are excited for this, and for many more to come.”

Oklo Inc. (NYSE:OKLO) also made headlines earlier this month when the company announced plans to design, build, and operate a facility in Tennessee to recycle used nuclear fuel into fuel for fast reactors like the company’s own Aurora powerhouse.

While we acknowledge the potential of OKLO to grow, our conviction lies in the belief that some AI stocks hold greater promise for delivering higher returns and have limited downside risk. If you are looking for an AI stock that is more promising than OKLO and that has 100x upside potential, check out our report about this cheapest AI stock.

READ NEXT: 15 Best Natural Gas and Oil Dividend Stocks to Buy Now and The 5 Energy Stocks Billionaires are Quietly Piling Into.

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