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A uranium ETF generally leans toward uranium miners and the companies that support uranium supply; a nuclear energy ETF may also own electricity utilities, reactor and plant contractors, equipment makers, and technology or service providers. The labels overlap, so the clearest way to compare funds is to read each fund’s index rules and investment policy, then check dated holdings—not infer the portfolio from its name.
What separates uranium ETFs from nuclear energy ETFs?
The main distinction is where a fund invests along the nuclear value chain. A uranium-mining portfolio focuses more on the companies that explore for, develop, mine, process, or otherwise support uranium supply. A broader nuclear-energy portfolio can extend downstream to companies that generate nuclear electricity, build or maintain plants and reactors, or supply the industry.
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Those business models can be exposed to different forces. Miners and developers have more direct ties to the uranium supply chain; utilities and power producers also depend on electricity markets and utility economics; contractors and suppliers can be affected by project spending and demand for their products or services. These are ways to understand the types of exposure, not predictions about performance: fund descriptions and holdings do not establish how a particular security or ETF will respond to an event.
Why the fund’s name is not enough
Funds can overlap. Global X says its URA invests in companies involved in uranium mining and nuclear-component production, including equipment manufacturing. VanEck’s NLR expressly includes uranium miners alongside nuclear power producers and companies involved in facilities, reactors, equipment, technology, and services.
Compare the fund’s stated benchmark and investment policy. For example, URNM’s index is uranium-mining-centered, while NLR’s index description spans several parts of the nuclear industry. URNM’s April 30, 2026 summary prospectus also states minimum 80% investment policies tied to index securities and uranium-mining companies. Those rules are more informative than treating “uranium” and “nuclear” as mutually exclusive categories.
How representative funds differ
| Fund | Stated focus | What the evidence shows |
|---|---|---|
| Global X Uranium ETF (URA) | Uranium mining and nuclear-component production, including extraction, refining, exploration, and equipment manufacturing; benchmark: Solactive Global Uranium & Nuclear Components Total Return Index. Global X fund page. | Its equity-sector breakdown dated August 31, 2026, was 60.7% Energy, 26.5% Industrials, 6.2% Utilities, 5.7% Materials, and 0.9% Information Technology. These are sector classifications, not percentages of uranium producers; Global X says the breakdown excludes cash and other holdings. Global X fund page. |
| Sprott Uranium Miners ETF (URNM) | Seeks generally to track the VettaFi Global Uranium Mining Index. Its April 30, 2026 summary prospectus says that, under normal circumstances, the fund invests at least 80% of total assets in index securities and at least 80% of net assets plus investment borrowings in securities of Uranium Mining Companies. The index may include mining, exploration, development, production, physical uranium holders, royalty owners, and non-mining companies supporting mining. SEC summary prospectus. | The prospectus reports a 0.75% total annual operating expense ratio and 35% portfolio turnover for the fiscal year ended December 31, 2025. Both figures are URNM-specific disclosures, not category averages. SEC summary prospectus. |
| VanEck Uranium and Nuclear ETF (NLR) | Its index is intended to cover uranium mining; construction, engineering, and maintenance of nuclear facilities and reactors; nuclear electricity production; and providers of equipment, technology, and services to the nuclear power industry. VanEck fund page. | VanEck’s holdings page accessed October 4, 2026 showed a mix including Constellation Energy, Cameco, Public Service Enterprise Group, Fortum, BWX Technologies, NexGen Energy, China General Nuclear Power, Oklo, Kazatomprom, and X-Energy. The page cautions that holdings may vary. VanEck holdings and performance. |
| iShares Nuclear Energy and Uranium Mining UCITS ETF (NUUR) | A UK-marketed, Irish-domiciled UCITS fund that aims to reflect the STOXX Global Nuclear Energy and Uranium Mining Index. BlackRock factsheet and fund page. | BlackRock’s June 2026 factsheet reported 41 holdings. Its top ten as of June 30, 2026 included Cameco, Dominion Energy, Duke Energy, Constellation Energy, Kansai Electric Power, GE Vernova, IHI, Siemens Energy, Talen Energy, and Siemens. That list illustrates a blend of uranium exposure, utilities, power companies, and suppliers; it is a dated snapshot. BlackRock factsheet and fund page. |
What to check before comparing two funds
- Index rules and fund policy: Identify which activities qualify for inclusion and whether the prospectus sets minimum investment thresholds. An index description and a fund’s investment policy are related but distinct pieces of information.
- Business mix: Separate miners and developers from utilities, power generators, engineering firms, equipment makers, and technology or service businesses. A fund that combines them is not a pure measure of uranium-miner exposure.
- Holdings and concentration: Look at individual positions and their weights, not just sector labels or the top ten names. Use holdings from the same date when comparing two funds; a list without matching dates can give a misleading impression of relative exposure.
- Geography and fund structure: Check the markets represented, trading currency, listing location, and domicile. NUUR, for example, is UK-marketed and Irish-domiciled; that does not make it interchangeable with a U.S.-listed fund.
- Costs: Use the latest prospectus or factsheet for each ETF. The cited 0.75% annual operating expense figure applies to URNM’s April 30, 2026 prospectus; it cannot establish the cost of the other funds.
- Dates: Treat holdings, sector breakdowns, and factsheet statistics as snapshots. URA’s sector data above is dated August 31, 2026; NUUR’s top-ten list is dated June 30, 2026; NLR’s cited holdings page was accessed October 4, 2026 and warns that holdings may vary.
How to read the holdings without overinterpreting them
A company name alone may not reveal how much of a portfolio is tied to uranium mining, nuclear power generation, or industry suppliers. Sector allocations group companies broadly; they are not a “uranium purity” measure. Likewise, a list of top holdings shows which securities were prominent on a particular date, but without their weights it does not quantify the portfolio’s precise exposure.
For a focused comparison, start with the latest prospectus or index methodology, then use a current holdings file to classify each position by business type. Keep the date beside every figure and distinguish a fund’s documented holdings from conclusions about how those holdings may behave.
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