{"url":"https://etfiq.com/compare/themes/smrf-vs-tnuk","section":"compare","title":"SMRF vs TNUK: which is really different? | ETFIQ","description":"27.8% of SMRF and 17.5% of TNUK is already in the S&P 500 by weight, as filed, and 32% of the two books are the same names at the same weight.","as_of":"Sep 30, 2026","structured_data":[{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Do SMRF and TNUK hold the same stocks?","acceptedAnswer":{"@type":"Answer","text":"By their latest filings, 32% of their books are the same securities at the same weight, which is a meaningful overlap. Overlap is the sum of the smaller weight of every security they share."}},{"@type":"Question","name":"Which is more different from the S&P 500, SMRF or TNUK?","acceptedAnswer":{"@type":"Answer","text":"SMRF has 28% of its weight in S&P 500 names and TNUK has 18%, so TNUK differs more from the index."}},{"@type":"Question","name":"Which is cheaper, SMRF or TNUK?","acceptedAnswer":{"@type":"Answer","text":"SMRF charges 0.65% a year and TNUK charges 0.85%, so SMRF is cheaper. Fees come from each fund's prospectus."}}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Thematic ETFs","item":"https://etfiq.com/themes/"},{"@type":"ListItem","position":3,"name":"SMRF vs TNUK","item":"https://etfiq.com/compare/themes/smrf-vs-tnuk"}]},{"@type":"WebPage","name":"SMRF vs TNUK: which is really different?","description":"27.8% of SMRF and 17.5% of TNUK is already in the S&P 500 by weight, as filed, and 32% of the two books are the same names at the same weight. Returns and overlap to Sep 30, 2026.","url":"https://etfiq.com/compare/themes/smrf-vs-tnuk","dateModified":"2026-09-30","abstract":"SMRF and TNUK hold 32% of their weight in the same names.","publisher":{"@id":"https://etfiq.com/#org"},"isPartOf":{"@id":"https://etfiq.com/#website"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".verdict",".faq"]}},{"@type":"Dataset","name":"ETFIQ comparison of SMRF and TNUK","description":"27.8% of SMRF and 17.5% of TNUK is already in the S&P 500 by weight, as filed, and 32% of the two books are the same names at the same weight. Returns and overlap to Sep 30, 2026.","dateModified":"2026-09-30","creator":{"@id":"https://etfiq.com/#org"},"isAccessibleForFree":true,"url":"https://etfiq.com/compare/themes/smrf-vs-tnuk","license":"https://etfiq.com/standards/","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"]}],"characters":6870,"truncated":true,"content":"ETFIQ / Thematic ETFs / Head to head / SMRF vs TNUK \n ETFIQ etfiq.com \u00b7 independent ETF data \n\n Data as of Sep 30, 2026 .\n\n SMRF vs TNUK: which is really different?\n\n SMRF and TNUK hold 32% of their weight in the same names.\n Copy this for sharing \n \n ALPS Nautilus SMR, Nuclear & Technology ETF and Tortoise Nuclear Renaissance ETF.\n\n Download as PDF \n\n 27.8% SMRF in the S&P 500 \n 17.5% TNUK in the S&P 500 \n \u221211.7% SMRF total return, since launch \n \u221211.8% TNUK total return, since launch \n\n ETFIQ Off-Index Score: TNUK scores higher\n How much of it is not the index it is sold as an alternative to","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/","citation":"ETFIQ, as of Sep 30, 2026. https://etfiq.com/compare/themes/smrf-vs-tnuk","a":{"ticker":"SMRF","name":"ALPS Nautilus SMR, Nuclear & Technology ETF","issuer":"ALPS","desk":"themes","as_of":"2026-09-30","verdict":"SMRF holds 72 stocks, and 72% of its weight is outside the S&P 500.","url":"https://etfiq.com/funds/smrf","key_facts":[{"label":"Already in the S&P 500","value":"27.8%","as_of":"2026-09-30","source":null},{"label":"Active share vs the S&P 500","value":"92.5%","as_of":"2026-09-30","source":null},{"label":"Top ten holdings","value":"40.2%","as_of":"2026-09-30","source":null},{"label":"Total return, since launch","value":"\u221211.7%","as_of":"2026-09-30","source":null},{"label":"Net assets","value":"$11m","as_of":"2026-09-30","source":"SEC filing, whole fund, as filed for May 31, 2026"},{"label":"Expense ratio","value":"0.65%","as_of":"2026-09-30","source":"485BPOS XBRL, Feb 18, 2026"}]},"b":{"ticker":"TNUK","name":"Tortoise Nuclear Renaissance ETF","issuer":"Tortoise","desk":"themes","as_of":"2026-09-30","verdict":"TNUK holds 25 stocks, and 82% of its weight is outside the S&P 500.","url":"https://etfiq.com/funds/tnuk","key_facts":[{"label":"Already in the S&P 500","value":"17.5%","as_of":"2026-09-30","source":null},{"label":"Active share vs the S&P 500","value":"99.2%","as_of":"2026-09-30","source":null},{"label":"Top ten holdings","value":"61.8%","as_of":"2026-09-30","source":null},{"label":"Total return, since launch","value":"\u221211.8%","as_of":"2026-09-30","source":null},{"label":"Net assets","value":"$2m","as_of":"2026-09-30","source":"SEC filing, whole fund, as filed for May 31, 2026"},{"label":"Expense ratio","value":"0.85%","as_of":"2026-09-30","source":"485BPOS, Mar 30, 2026"}]},"overlap_pct":32,"full_text_at":"https://etfiq.com/compare/themes/smrf-vs-tnuk"}