Do TNUK and UX hold the same stocks?

By their latest filings, 0% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.

Which is more different from the S&P 500, TNUK or UX?

TNUK has 18% of its weight in S&P 500 names and UX has 0%, so UX differs more from the index.

Which is cheaper, TNUK or UX?

TNUK charges 0.85% a year and UX charges 0.77%, so UX is cheaper. Fees come from each fund's prospectus.

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TNUK vs UX: which is really different?

TNUK and UX hold 0% of their weight in the same names. Tortoise Nuclear Renaissance ETF and Roundhill Uranium ETF.

17.5%

TNUK in the S&P 500

0.0%

UX in the S&P 500

−11.8%

TNUK total return, since launch

−9.2%

UX total return, 1 year

TNUK · 6 months to Sep 30, 202683% of its weight is outside the S&P 500

18% of TNUK's weight is in S&P 500 companies and 83% is outside the index

UX · 1 year to Sep 30, 2026100% of its weight is outside the S&P 500

0% of UX's weight is in S&P 500 companies and 100% is outside the index

ETFIQ Off-Index Score · UX scores higherHow much of it is not the index it is sold as an alternative to?

TNUK 66.3

UX 92

0.1, the lowest in this set92.0, the highest

A percentile among the 375 thematic ETFs with a holdings filing. It is a position in a set, not a rating, and neither end of it is a recommendation. All thematic ETFs ranked by it → How it is computed →

What they hold in common

By the books each fund has filed, TNUK and UX hold 0% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and May 31, 2026.

50%

half

0% in common

Positions both hold, largest shared weight first

Holding TNUK UX

Only in TNUK

Curtiss-Wright Corp 8.15%

Cameco Corp 7.48%

Doosan Enerbility Co Ltd 6.94%

Talen Energy Corp 6.90%

BWX Technologies Inc 6.66%

Mirion Technologies Inc 6.22%

Rolls-Royce Holdings PLC 5.06%

Uranium Energy Corp 4.97%

Only in UX

TREASURY BILL 80.95%

Sprott Physical Uranium Trust 19.05%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed.

0% of the two portfolios are the same securities at the same weight.

Performance, window by window

	Total return		vs the S&P 500		vs the Nasdaq-100
Window	TNUK	UX	TNUK	UX	TNUK	UX
3 months	−10.1%	+2.1%	−12.6 pts	−0.4 pts	−12.2 pts	0.0 pts
6 months	−15.3%	−9.5%	−32.3 pts	−26.5 pts	−42.2 pts	−36.4 pts
1 year	not published	−9.2%	not published	−24.9 pts	not published	−33.0 pts
Since launch TNUK Dec 2025 · UX Jan 2025	−11.8%	+8.4%	−25.7 pts	−20.8 pts	−33.8 pts	−34.8 pts

TNUK and UX over each window. Every figure is an ETFIQ calculation with distributions reinvested. Source: ETFIQ. Open the live comparison on ETFIQ →

On the same fields

TNUK

Tortoise Nuclear Renaissance ETF · Holds 25 stocks in nuclear and uranium, 18% of its weight in S&P 500 companies

Roundhill Uranium ETF · Holds 2 stocks in nuclear and uranium, 0% of its weight in S&P 500 companies

Issuer Tortoise Roundhill

Theme Nuclear and uranium Nuclear and uranium

In the S&P 500 17.5% 0.0%

Active share vs the S&P 500 99.2% 100.0%

In the Nasdaq-100 4.5% 0.0%

Holdings 25 2

Top ten, share of the fund 61.8% 100.0%

Expense ratio 0.85% 0.77%

Fee for the differing part 0.86% 0.77%

Total return, 1 year −11.8% (since launch on Dec 18, 2025) −9.2%

vs the S&P 500 −25.7 pts −24.9 pts

vs the Nasdaq-100 −33.8 pts −33.0 pts

Below its high −26.4% −24.2%

Net assets $2m $4m

TNUK and UX on the same fields, as of Sep 30, 2026. Source: ETFIQ.

TNUK in plain words

By 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. Since it launched on Dec 18, 2025 the fund returned −11.8% with distributions reinvested against +13.9% for the S&P 500, so a holder was behind by 25.7 pts. It sits 26.4% below its all-time high of Jan 28, 2026.

UX in plain words

By weight, 0% of UX's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 100%. The top ten holdings are 100% of the fund across 2 positions, as filed for Jun 30, 2026. Over the year to Sep 30, 2026 the fund returned −9.2% with distributions reinvested against +15.7% for the S&P 500, so a holder was behind by 24.9 pts. It sits 24.2% below its all-time high of Jan 28, 2026.

Questions people ask

Do TNUK and UX hold the same stocks?: By their latest filings, 0% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.
Which is more different from the S&P 500, TNUK or UX?: TNUK has 18% of its weight in S&P 500 names and UX has 0%, so UX differs more from the index.
Which is cheaper, TNUK or UX?: TNUK charges 0.85% a year and UX charges 0.77%, so UX is cheaper. Fees come from each fund's prospectus.

Other comparisons

TNUK vs URNM TNUK vs NLR TNUK vs NUKZ TNUK vs RCTR UX vs NUKZ UX vs RCTR UX vs URNM UX vs URAN

TNUK on its own →UX on its own →How every figure is computed →Standards and sources →

Where these figures came from

TNUK filings on SEC EDGAR ↗Tortoise website ↗UX filings on SEC EDGAR ↗UX prospectus with the expense ratio (SEC) ↗Roundhill page for UX ↗

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement. A comparison is not a recommendation.

Cite this page

ETFIQ, TNUK against UX, data as of Sep 30, 2026. https://etfiq.com/compare/themes/tnuk-vs-ux

Open data

Free to use with attribution. Every figure is calculated from a named public source; the method is at etfiq.com/methodology.