{"url":"https://etfiq.com/rankings/themes-concentrated-nuclear","section":"rankings","title":"The most concentrated nuclear and uranium ETFs | ETFIQ","description":"The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions, as of Oct 20, 2026.","as_of":"Oct 20, 2026","structured_data":[{"@type":"ItemList","name":"The most concentrated nuclear and uranium ETFs","numberOfItems":10,"itemListOrder":"https://schema.org/ItemListOrderDescending","itemListElement":[{"@type":"ListItem","position":1,"name":"URNM","url":"https://etfiq.com/funds/urnm"},{"@type":"ListItem","position":2,"name":"URNJ","url":"https://etfiq.com/funds/urnj"},{"@type":"ListItem","position":3,"name":"URA","url":"https://etfiq.com/funds/ura"},{"@type":"ListItem","position":4,"name":"TNUK","url":"https://etfiq.com/funds/tnuk"},{"@type":"ListItem","position":5,"name":"NLR","url":"https://etfiq.com/funds/nlr"},{"@type":"ListItem","position":6,"name":"RCTR","url":"https://etfiq.com/funds/rctr"},{"@type":"ListItem","position":7,"name":"SMRF","url":"https://etfiq.com/funds/smrf"},{"@type":"ListItem","position":8,"name":"URAN","url":"https://etfiq.com/funds/uran"},{"@type":"ListItem","position":9,"name":"NUKZ","url":"https://etfiq.com/funds/nukz"},{"@type":"ListItem","position":10,"name":"UX","url":"https://etfiq.com/funds/ux"}]},{"@type":"Dataset","name":"The most concentrated nuclear and uranium ETFs","description":"The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions, as of Oct 20, 2026.","url":"https://etfiq.com/rankings/themes-concentrated-nuclear","dateModified":"2026-10-20","creator":{"@id":"https://etfiq.com/#org"},"license":"https://etfiq.com/license/","isAccessibleForFree":true,"creditText":"ETFIQ (etfiq.com)","publisher":{"@id":"https://etfiq.com/#org"},"inLanguage":"en","creativeWorkStatus":"Published","distribution":[{"@type":"DataDownload","encodingFormat":"application/json","contentUrl":"https://etfiq.com/data/thematic.json"}],"variableMeasured":["Weight overlap with the S&P 500","Active share","Holdings","Top ten share of the fund","Total return","Fee for the differing part","Expense ratio"],"keywords":["exchange-traded funds","ETF","Thematic ETFs","fund data","SEC filings"]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Rankings","item":"https://etfiq.com/rankings/"},{"@type":"ListItem","position":3,"name":"The most concentrated nuclear and uranium ...","item":"https://etfiq.com/rankings/themes-concentrated-nuclear"}]},{"@type":"WebPage","name":"The most concentrated nuclear and uranium ETFs","description":"The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions, as of Oct 20, 2026.","url":"https://etfiq.com/rankings/themes-concentrated-nuclear","dateModified":"2026-10-20","isPartOf":{"@type":"WebSite","name":"ETFIQ","url":"https://etfiq.com"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".lede"]},"publisher":{"@id":"https://etfiq.com/#org"}}],"characters":3134,"truncated":false,"content":"ETFIQ / Rankings / The most concentrated nuclear and uranium ... \n \n As of Oct 20, 2026 . Rebuilt every trading night.\n The most concentrated nuclear and uranium ETFs\n See 10 funds ranked by the share of the fund held in its ten largest positions. Updated Oct 20, 2026. Two funds on one theme can hold ten names or two hundred. Fund names do not show which.\n The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions, as of Oct 20, 2026. Source: ETFIQ. # Ticker Fund Top ten weight Holdings Net assets Total return, 1Y \n 1 URNM Sprott Uranium Miners ETF 81.7% 25 $1.7bn \u221224.7% \n 2 URNJ Sprott Junior Uranium Miners ETF 73.5% 41 $288m \u221237.7% \n 3 URA Global X Uranium ETF 63.0% 57 $5.4bn \u221230.9% \n 4 TNUK Tortoise Nuclear Renaissance ETF 61.5% 25 $2m too new \n 5 NLR VanEck Uranium and Nuclear ETF 61.1% 25 $3.2bn \u221236.8% \n 6 RCTR First Trust Bloomberg Nuclear Power ETF 47.6% 44 $29m \u221212.3% \n 7 SMRF ALPS Nautilus SMR, Nuclear & Technology 40.4% 72 $11m too new \n 8 URAN Themes Uranium & Nuclear ETF 40.2% 42 $28m \u221233.3% \n 9 NUKZ Range Nuclear Renaissance Index ETF 36.2% 46 $890m \u221217.5% \n 10 UX Roundhill Uranium ETF 19.8% 1 $4m +2.4% \n \n Method\n The 10 of 10 ETFs in the nuclear and uranium theme with a filed book, most concentrated first. Across the funds listed here the weight in the ten largest runs from 19.8% to 81.7%. Concentration is not a fault. It shows how much rides on ten holdings. The list sorts one published figure, with no scoring or weighting. Every fund ETFIQ covers in this category is eligible, closed funds included.\n Where to next\n Every nuclear and uranium ETF and what it holds The largest nuclear and uranium ETFs Where these figures came from\n Fund holdings from SEC Form N-PORT and from the issuers own daily files SEC EDGAR, full-text search of fund filings SEC Form N-PORT, what a fund filed it holds Rule 19a-1, what a distribution notice must say ETFIQ links to the documents behind every figure; a link is not an endorsement.\n A ranking is not a recommendation or an opinion. ETFIQ is an independent publisher, not an adviser. Standards and sources \n Cite this page. ETFIQ, The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-concentrated-nuclear Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms. The underlying files are at Open data .\n Other forms Plain ETFIQ, The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-concentrated-nuclear APA ETFIQ. (Oct 20, 2026). The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions. Retrieved from https://etfiq.com/rankings/themes-concentrated-nuclear Markdown [The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions (ETFIQ, Oct 20, 2026)](https://etfiq.com/rankings/themes-concentrated-nuclear)","source":"ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.","publisher":{"@id":"https://etfiq.com/#org","name":"ETFIQ","url":"https://etfiq.com"},"license":"https://etfiq.com/license/","license_text":"Figures ETFIQ computes are free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms.","citation":"ETFIQ, The most concentrated nuclear and uranium ETFs, ranked by the share of the fund held in its ten largest positions, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-concentrated-nuclear"}