UX shares 0 of its 2 holdings with the S&P 500. Only 0.0% of its weight overlaps the index.
How much of it is not the index it is sold as an alternative to?
Weight that does not overlap the S&P 500
That is the share of the 371 thematic ETFs with a holdings filing sitting at or below UX. A position in this set, not a rating: it moves when the set moves, and it is not a figure to average against another desk's.
The top ten holdings are 100% of the fund across 2 positions, as filed for Jun 30, 2026. Over the year to Sep 11, 2026 the fund returned +2.7% with distributions reinvested against +17.5% for the S&P 500, so a holder was behind by 14.8 pts. It sits 21.7% below its all-time high of Jan 28, 2026.
UX (Roundhill Uranium ETF), thematic ETFs fields as of Sep 11, 2026. Source: ETFIQ.
Theme (ETFIQ, editorial)
Nuclear and uranium
Launched
Jan 29, 2025
Already in the S&P 500, by weight (ETFIQ)
0.0%
Active share vs the S&P 500 (ETFIQ)
100.0%
Already in the Nasdaq-100, by weight (ETFIQ)
0.0%
Active share vs the Nasdaq-100 (ETFIQ)
100.0%
Top ten holdings weight
100.0%
Holdings
2
Holdings as of (SEC N-PORT)
Jun 30, 2026
Top holdings
TREASURY BILL 81.0%, Sprott Physical Uranium Trust 19.1%
Net assets (the issuer own daily fund list, as of Sep 11, 2026)
$5m
Below its all-time high (ETFIQ)
−21.7%
Expense ratio (485BPOS XBRL, Apr 30, 2026)
0.77%
Fee for the part that differs from the S&P 500, active expense ratio (ETFIQ)
0.77%
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. How these figures are computed
Questions people ask
How much of UX is in S&P 500 companies?
By its holdings filed for Jun 30, 2026, 0% of UX by weight is stocks the S&P 500 already holds. Its active share against the index is 100%, so that share is the part doing something different.
What does UX hold?
2 positions as filed for Jun 30, 2026, with the top ten at 100% of the fund. The largest are TREASURY BILL at 81.0%, Sprott Physical Uranium Trust at 19.1%.
Has UX beaten the S&P 500?
Over the year to Sep 11, 2026 UX returned +2.7% with distributions reinvested, against +17.5% for the S&P 500, so it finished behind the index by 14.8 points.
What does UX cost?
The prospectus expense ratio is 0.77% a year. Because 100% of the fund differs from the S&P 500, the fee on that differing part works out at 0.77%.
The part of the fund doing something the index is not, as a percentage. It is the part a fee is actually buying.
Weight overlap
The share of money two portfolios hold in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice.
Already in the index
The fund’s weight in securities the S&P 500 holds at all. A fund can be made entirely of index names and still have high active share, because it holds them at very different weights.
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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Where UX is written about
UX, Thematic ETFs, ETFIQ, data as of Sep 11, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. ETFIQ is an independent publisher, is not a fund issuer, broker-dealer or investment adviser, and makes no recommendations.
Cite this page. ETFIQ, UX, thematic ETFs, data as of Sep 11, 2026. https://etfiq.com/funds/ux Free to use with attribution; the underlying files are at Open data.