What are the top nuclear fusion stock plays right now?

**Bottom-line: The most compelling publicly-traded “nuclear fusion” plays today cluster around a handful of U.S. names—Entergy (ETR), BWX Technologies (BWXT), Oklo (OKLO), NuScale Power (SMR), Centrus Energy (LEU.A), Lightbridge (LTBR) and Graham (GHM).** 🌟🔋

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### Why these seven? 🤔🚀
1. **Policy tailwinds & mega-investments**
• Germany just pledged **€1.7 billion** toward the world’s first commercial fusion reactor, signalling a global race for technological sovereignty .
• China and the U.S. continue to pour billions into ITER, CRAFT and private ventures, reinforcing a multi-decade demand curve for components, materials and services .

2. **Screeners confirm liquidity & momentum**
• A recent “nuclear fusion stocks list 2025” scan highlights these tickers as the most actively followed, with price action and inclusion reasons tied directly to fusion or adjacent nuclear innovation .
nuclear fusion stocks list 2025
|code|market_code|stock code|stock name|Last Price|Last Change|Theme|Inclusion Reason[20251103]|Yearly Percentage Change[20251103]|
|---|---|---|---|---|---|---|---|---|
|OKLO|169|OKLO.N|Oklo|126.61|-4.639602|||496.373057|
|LTBR|186|LTBR.O|Lightbridge|24.77|-7.677972|||423.678647|
|LEU|170|LEU.A|Centrus Energy|343.29|-6.577587|||415.373067|
|SMR|169|SMR.N|NuScale Power|40.83|-9.003789|||127.71890699999999|
|BWXT|169|BWXT.N|BWX Technologies|215.845|1.046299|||93.774127|
|GHM|169|GHM.N|Graham|62.31|0.032108|||40.116932999999996|
|ETR|169|ETR.N|Entergy|96.86|0.801332|||27.749934|

3. **Market-cap heft adds stability**
• Among U.S. listings, **Entergy ($43.26 B)** and **BWXT ($19.73 B)** offer blue-chip exposure, while mid-caps like **OKLO ($18.7 B)** and **SMR ($11.63 B)** provide higher beta for growth-oriented investors .
top nuclear fusion companies by market cap
|code|market_code|stock code|stock name|Last Price|Last Change|Theme|Inclusion Reason[20251103]|Market Cap[20251103]|
|---|---|---|---|---|---|---|---|---|
|ETR|169|ETR.N|Entergy|96.86|0.801332|||4.326184209048E10|
|BWXT|169|BWXT.N|BWX Technologies|215.845|1.046299|||1.97293320164E10|
|OKLO|169|OKLO.N|Oklo|126.61|-4.639602|||1.869765660398E10|
|SMR|169|SMR.N|NuScale Power|40.83|-9.003789|||1.163152076475E10|
|LEU|170|LEU.A|Centrus Energy|343.29|-6.577587|||6.24510772758E9|
|LTBR|186|LTBR.O|Lightbridge|24.77|-7.677972|||7.3944050292E8|
|GHM|169|GHM.N|Graham|62.31|0.032108|||6.8357743272E8|

4. **Performance snapshot**
• Year-to-date, **OKLO (+496 %)** and **LTBR (+424 %)** have outpaced the pack, but **BWXT (+94 %)** and **SMR (+128 %)** show steadier, contract-backed growth .

|market_code|code|Ticker|Name|Date|Closing Price|
|---|---|---|---|---|---|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250102|24.815|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250103|25.375|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250106|23.765|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250107|21.7175|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250108|19.565|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250110|21.945|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250113|18.9|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250114|18.7005|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250115|18.452|
|186|HTOO|HTOO.O|Fusion Fuel Green|20250116|19.0155|

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### Quick-glance scorecard 📊✨

| Ticker | Role in Fusion/Energy Mix | YTD % Change | Market Cap | Key Takeaway |
|--------|--------------------------|--------------|------------|--------------|
| ETR | Operator of nuclear plants; grid backbone | 27.8 % | $43.26 B | Large-cap stability, dividend kicker |
| BWXT | Reactor components & SMR support | 93.8 % | $19.73 B | Gov’t contracts de-risk cash flows |
| OKLO | Micro-reactors & fission-fusion hybrids | 496.4 % | $18.7 B | High-octane, early-stage tech |
| SMR | Only NRC-approved SMR developer | 127.7 % | $11.63 B | First-mover in modular reactors |
| LEU.A | Supplier of HALEU fuel | 415.4 % | $6.25 B | Critical supply-chain chokepoint |
| LTBR | Advanced nuclear fuel rods | 423.7 % | $0.74 B | Niche tech, small float |
| GHM | Industrial equipment for plants | 40.1 % | $0.68 B | Under-the-radar enabler |

*Table rationale: consolidates price momentum, size and strategic fit into one view that the raw screener visuals alone can’t convey.*

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### How to play it? 🎯💡
• **Core position:** Blend ETR or BWXT for income and beta stability.
• **Growth sleeve:** Layer OKLO or SMR for asymmetric upside if commercial fusion milestones accelerate.
• **Supply-chain angle:** LEU.A and LTBR give leveraged exposure to fuel and components without reactor construction risk.

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Ready to spin your portfolio toward the power of the sun—what slice of this fusion menu feels like the right fit for your risk appetite? 😄📈