{"url":"https://etfiq.com/rankings/themes-off-index-nuclear","section":"rankings","title":"The nuclear and uranium ETFs least like the S&P 500 | ETFIQ","description":"The nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies, as of Oct 20, 2026.","as_of":"Oct 20, 2026","structured_data":[{"@type":"ItemList","name":"The nuclear and uranium ETFs least like the S&P 500","numberOfItems":10,"itemListOrder":"https://schema.org/ItemListOrderDescending","itemListElement":[{"@type":"ListItem","position":1,"name":"URA","url":"https://etfiq.com/funds/ura"},{"@type":"ListItem","position":2,"name":"URNJ","url":"https://etfiq.com/funds/urnj"},{"@type":"ListItem","position":3,"name":"URNM","url":"https://etfiq.com/funds/urnm"},{"@type":"ListItem","position":4,"name":"UX","url":"https://etfiq.com/funds/ux"},{"@type":"ListItem","position":5,"name":"NLR","url":"https://etfiq.com/funds/nlr"},{"@type":"ListItem","position":6,"name":"TNUK","url":"https://etfiq.com/funds/tnuk"},{"@type":"ListItem","position":7,"name":"NUKZ","url":"https://etfiq.com/funds/nukz"},{"@type":"ListItem","position":8,"name":"URAN","url":"https://etfiq.com/funds/uran"},{"@type":"ListItem","position":9,"name":"SMRF","url":"https://etfiq.com/funds/smrf"},{"@type":"ListItem","position":10,"name":"RCTR","url":"https://etfiq.com/funds/rctr"}]},{"@type":"Dataset","name":"The nuclear and uranium ETFs least like the S&P 500","description":"The nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies, as of Oct 20, 2026.","url":"https://etfiq.com/rankings/themes-off-index-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 nuclear and uranium ETFs least like th...","item":"https://etfiq.com/rankings/themes-off-index-nuclear"}]},{"@type":"WebPage","name":"The nuclear and uranium ETFs least like the S&P 500","description":"The nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies, as of Oct 20, 2026.","url":"https://etfiq.com/rankings/themes-off-index-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":3402,"truncated":false,"content":"ETFIQ / Rankings / The nuclear and uranium ETFs least like th... \n \n As of Oct 20, 2026 . Rebuilt every trading night.\n The nuclear and uranium ETFs least like the S&P 500\n See 10 funds ranked by the share of the fund by weight that is held in S&P 500 companies. Updated Oct 20, 2026. Every fund here is sold on nuclear and uranium, and they differ in how much of the index they hand you back. The one at the top is the one adding the most that is new.\n The nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies, as of Oct 20, 2026. Source: ETFIQ. # Ticker Fund Weight in S&P 500 companies Active share Net assets Fee \n 1 URA Global X Uranium ETF 0.0% 100.0% $5.4bn 0.69% \n 2 URNJ Sprott Junior Uranium Miners ETF 0.0% 100.0% $288m 0.80% \n 3 URNM Sprott Uranium Miners ETF 0.0% 100.0% $1.7bn 0.75% \n 4 UX Roundhill Uranium ETF 0.0% 100.0% $4m 0.77% \n 5 NLR VanEck Uranium and Nuclear ETF 15.1% 99.8% $3.2bn 0.52% \n 6 TNUK Tortoise Nuclear Renaissance ETF 17.4% 99.2% $2m 0.75% \n 7 NUKZ Range Nuclear Renaissance Index ETF 23.0% 98.7% $890m 0.85% \n 8 URAN Themes Uranium & Nuclear ETF 24.1% 99.5% $28m 0.35% \n 9 SMRF ALPS Nautilus SMR, Nuclear & Technology 27.8% 92.5% $11m 0.65% \n 10 RCTR First Trust Bloomberg Nuclear Power ETF 30.2% 98.9% $29m 0.70% \n \n Method\n The 10 of 10 ETFs in the nuclear and uranium theme with a filed book, least overlap first, each measured against the S&P 500 holdings ETFIQ reads for the same date. Across the funds listed here the weight held in S&P 500 companies runs from 0.0% to 30.2%. A thematic fund is worth its fee only for the part of it you do not already own. 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 nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-off-index-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 nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-off-index-nuclear APA ETFIQ. (Oct 20, 2026). The nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies. Retrieved from https://etfiq.com/rankings/themes-off-index-nuclear Markdown [The nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies (ETFIQ, Oct 20, 2026)](https://etfiq.com/rankings/themes-off-index-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 nuclear and uranium ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-off-index-nuclear"}