Do SMRF 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, SMRF or UX?

SMRF has 28% of its weight in S&P 500 names and UX has 0%, so UX differs more from the index.

Which is cheaper, SMRF or UX?

SMRF charges 0.65% a year and UX charges 0.77%, so SMRF is cheaper. Fees come from each fund's prospectus.

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SMRF vs UX: which is really different?

SMRF and UX hold 0% of their weight in the same names. ALPS Nautilus SMR, Nuclear & Technology ETF and Roundhill Uranium ETF.

27.8%

SMRF in the S&P 500

0.0%

UX in the S&P 500

−11.7%

SMRF total return, since launch

−9.2%

UX total return, 1 year

SMRF · 6 months to Sep 30, 202672% of its weight is outside the S&P 500

28% of SMRF's weight is in S&P 500 companies and 72% 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?

SMRF 27.5

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, SMRF 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 SMRF UX

Only in SMRF

Cameco Corp 4.30%

Cgn Power Co Ltd 4.28%

Nexgen Energy Ltd 4.23%

Bwx Technologies Inc 4.23%

Oklo Inc 4.22%

Uranium Energy Corp 4.00%

Ge Vernova Inc 3.82%

Nac Kazatomprom Jsc 3.82%

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	SMRF	UX	SMRF	UX	SMRF	UX
3 months	−11.2%	+2.1%	−13.7 pts	−0.4 pts	−13.3 pts	0.0 pts
6 months	−2.9%	−9.5%	−19.9 pts	−26.5 pts	−29.8 pts	−36.4 pts
1 year	not published	−9.2%	not published	−24.9 pts	not published	−33.0 pts
Since launch SMRF Feb 2026 · UX Jan 2025	−11.7%	+8.4%	−24.0 pts	−20.8 pts	−34.7 pts	−34.8 pts

SMRF 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

SMRF

ALPS Nautilus SMR, Nuclear & Technology ETF · Holds 72 stocks in nuclear and uranium, 28% 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 ALPS Roundhill

Theme Nuclear and uranium Nuclear and uranium

In the S&P 500 27.8% 0.0%

Active share vs the S&P 500 92.5% 100.0%

In the Nasdaq-100 14.4% 0.0%

Holdings 72 2

Top ten, share of the fund 40.2% 100.0%

Expense ratio 0.65% 0.77%

Fee for the differing part 0.70% 0.77%

Total return, 1 year −11.7% (since launch on Feb 19, 2026) −9.2%

vs the S&P 500 −24.0 pts −24.9 pts

vs the Nasdaq-100 −34.7 pts −33.0 pts

Below its high −22.1% −24.2%

Net assets $11m $4m

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

SMRF in plain words

By weight, 28% of SMRF's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 92%. The top ten holdings are 40% of the fund across 72 positions, as filed for May 31, 2026. Since it launched on Feb 19, 2026 the fund returned −11.7% with distributions reinvested against +12.3% for the S&P 500, so a holder was behind by 24.0 pts. It sits 22.1% below its all-time high of Jun 2, 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 SMRF 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, SMRF or UX?: SMRF has 28% of its weight in S&P 500 names and UX has 0%, so UX differs more from the index.
Which is cheaper, SMRF or UX?: SMRF charges 0.65% a year and UX charges 0.77%, so SMRF is cheaper. Fees come from each fund's prospectus.

Other comparisons

SMRF vs URNM SMRF vs TNUK SMRF vs URA SMRF vs URAN UX vs NUKZ UX vs TNUK UX vs URNJ UX vs URNM

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

Where these figures came from

SMRF filings on SEC EDGAR ↗SMRF prospectus with the expense ratio (SEC) ↗ALPS 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, SMRF against UX, data as of Sep 30, 2026. https://etfiq.com/compare/themes/smrf-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.