{"url":"https://etfiq.com/compare/themes/rctr-vs-tnuk","section":"compare","title":"RCTR vs TNUK: which is really different? | ETFIQ","description":"27.5% of RCTR and 17.5% of TNUK is already in the S&P 500 by weight, as filed, and 44% 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 RCTR and TNUK hold the same stocks?","acceptedAnswer":{"@type":"Answer","text":"By their latest filings, 44% 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, RCTR or TNUK?","acceptedAnswer":{"@type":"Answer","text":"RCTR 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, RCTR or TNUK?","acceptedAnswer":{"@type":"Answer","text":"RCTR charges 0.70% a year and TNUK charges 0.85%, so RCTR 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":"RCTR vs TNUK","item":"https://etfiq.com/compare/themes/rctr-vs-tnuk"}]},{"@type":"WebPage","name":"RCTR vs TNUK: which is really different?","description":"27.5% of RCTR and 17.5% of TNUK is already in the S&P 500 by weight, as filed, and 44% 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/rctr-vs-tnuk","dateModified":"2026-09-30","abstract":"RCTR and TNUK hold 44% 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 RCTR and TNUK","description":"27.5% of RCTR and 17.5% of TNUK is already in the S&P 500 by weight, as filed, and 44% 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/rctr-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":7059,"truncated":true,"content":"ETFIQ / Thematic ETFs / Head to head / RCTR vs TNUK \n ETFIQ etfiq.com \u00b7 independent ETF data \n\n Data as of Sep 30, 2026 .\n\n RCTR vs TNUK: which is really different?\n\n RCTR and TNUK hold 44% of their weight in the same names.\n Copy this for sharing \n \n First Trust Bloomberg Nuclear Power ETF and Tortoise Nuclear Renaissance ETF.\n\n Download as PDF \n\n 27.5% RCTR in the S&P 500 \n 17.5% TNUK in the S&P 500 \n \u22122.0% RCTR total return, 1 year \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?\n [RCTR sc","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/rctr-vs-tnuk","a":{"ticker":"RCTR","name":"First Trust Bloomberg Nuclear Power ETF","issuer":"First Trust","desk":"themes","as_of":"2026-09-30","verdict":"RCTR holds 50 stocks, and 72% of its weight is outside the S&P 500.","url":"https://etfiq.com/funds/rctr","key_facts":[{"label":"Already in the S&P 500","value":"27.5%","as_of":"2026-09-30","source":null},{"label":"Active share vs the S&P 500","value":"98.9%","as_of":"2026-09-30","source":null},{"label":"Top ten holdings","value":"46.9%","as_of":"2026-09-30","source":null},{"label":"Total return, 1 year","value":"\u22122.0%","as_of":"2026-09-30","source":null},{"label":"Net assets","value":"$29m","as_of":"2026-09-30","source":"issuer page, as of Sep 30, 2026"},{"label":"Expense ratio","value":"0.70%","as_of":"2026-09-30","source":"485BPOS XBRL, Jan 28, 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":44,"full_text_at":"https://etfiq.com/compare/themes/rctr-vs-tnuk"}