Data as of . Holdings from the fund’s latest public SEC N-PORT filing; overlap and active share computed by ETFIQ against the IVV and QQQM books; returns from Tiingo end-of-day prices with distributions reinvested.
TNUK · Tortoise Nuclear Renaissance ETF
Tortoise · Themes desk
Open the live card on ETFIQBy weight, 18% of TNUK's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 99%. The top ten holdings are 62% of the fund across 25 positions, as filed for May 31, 2026. Over the year to Sep 4, 2026 the fund returned −2.8% with distributions reinvested against +14.8% for the S&P 500, so a holder was behind by 17.6 pts. It sits 18.8% below its all-time high of Jan 28, 2026.
| Theme (ETFIQ, editorial) | Nuclear and uranium |
|---|---|
| Launched | Dec 18, 2025 |
| Already in the S&P 500, by weight (ETFIQ) | 17.5% |
| Active share vs the S&P 500 (ETFIQ) | 99.2% |
| Already in the Nasdaq-100, by weight (ETFIQ) | 4.5% |
| Active share vs the Nasdaq-100 (ETFIQ) | 99.5% |
| Top ten holdings weight | 61.8% |
| Holdings | 25 |
| Net assets (latest filing) | $2M |
| Holdings as of (SEC N-PORT) | May 31, 2026 |
| Top holdings | Curtiss-Wright Corp 8.2%, Cameco Corp 7.5%, Doosan Enerbility Co Ltd 6.9%, Talen Energy Corp 6.9%, BWX Technologies Inc 6.7%, Mirion Technologies Inc 6.2%, Rolls-Royce Holdings PLC 5.1%, Uranium Energy Corp 5.0%, Public Service Enterprise Grou 4.8%, Vistra Corp 4.7% |
| 3 months: total return / S&P 500 / gap / Nasdaq-100 gap (ETFIQ) | −1.3% / +4.7% / −6.0 pts / −3.4 pts |
| 6 months: total return / S&P 500 / gap / Nasdaq-100 gap (ETFIQ) | −7.8% / +15.2% / −23.0 pts / −28.0 pts |
| since launch: total return / S&P 500 / gap / Nasdaq-100 gap (ETFIQ) | −2.8% / +14.8% / −17.6 pts / −21.2 pts |
| Below its all-time high (ETFIQ) | −18.8% |
| Closest funds by holdings overlap | NLR 46%, RCTR 44%, NUKZ 39%, URAN 34%, URA 27% |
Questions people ask
- How much of TNUK is already in the S&P 500?
- By its holdings filed for May 31, 2026, 18% of TNUK by weight is stocks the S&P 500 already holds. Its active share against the index is 99%, so that share is the part doing something different.
- What does TNUK hold?
- 25 positions as filed for May 31, 2026, with the top ten at 62% of the fund. The largest are Curtiss-Wright Corp at 8.2%, Cameco Corp at 7.5%, Doosan Enerbility Co Ltd at 6.9%.
- Has TNUK beaten the S&P 500?
- Over the year to Sep 4, 2026 TNUK returned −2.8% with distributions reinvested, against +14.8% for the S&P 500, so it finished behind the index by 17.6 points.
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
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<p><a href="https://etfiq.com/funds/TNUK.html">TNUK difference bar, updated daily by ETFIQ</a></p>Cite this page. ETFIQ, TNUK on the themes desk, data as of Sep 4, 2026. https://etfiq.com/funds/TNUK.html Free to use with attribution; the underlying files are at Open data.
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