# Quantum computing ETFs: 4 funds, largest first

> ETFIQ covers 4 quantum computing ETFs. The largest are QTUM ($5.3bn), WQTM ($329m) and QTUP ($17m); fees run 0.35% to 0.77%, as of Jun 30 to Oct 20, 2026.

Data as of Oct 21, 2026. Rebuilt every trading night.

Data as of Oct 21, 2026 .

## Quantum computing ETFs: what each one holds

See every quantum computing ETF by what it holds, not by its name. Funds that hold the companies building quantum computers, and the hardware, software and services around them. 4 funds, largest first. Updated Oct 21, 2026. The typical fund carries 37% of its weight in S&P 500 names, the 19th most of the 53 themes with filed books.

4 US listed quantum computing ETFs

$5.3bn The largest, QTUM

0.35% The cheapest, CQTM

+30.0% Best one year, QTUM

### The short answers

Least like the S&P 500 CQTM , Corgi Quantum Computing ETF, 16.2% of its weight in S&P 500 companies. Closest pair CQTM and QTUP , 47% of their weight in the same companies.

### What these funds actually own

Between them the 4 funds' ten largest holdings name 26 companies, of which 9 appear in more than one. IONQ INC is among the ten largest of 3 of them, at an average of 11.0% of the fund.

| Company | Among the ten largest of | Average weight where it is | Largest, and in which fund |
| --- | --- | --- | --- |
| IONQ INC IONQ | 3 of 4 | 11.0% | 16.0% in CQTM |
| QUANTINUUM INC QNT | 3 of 4 | 6.5% | 7.3% in CQTM |
| Horizon Quantum Holdings Ltd HQ | 3 of 4 | 5.2% | 8.6% in QTUP |
| INFLEQTION INC INFQ | 3 of 4 | 5.1% | 7.8% in QTUP |
| QUANTUM COMPUTING INC QUBT | 3 of 4 | 4.0% | 4.8% in QTUP |
| D-WAVE QUANTUM INC QBTS | 2 of 4 | 7.1% | 8.7% in CQTM |
| RIGETTI COMPUTING INC RGTI | 2 of 4 | 6.1% | 7.1% in CQTM |
| INTERNATIONAL BUSINESS MACHINES CORP IBM | 2 of 4 | 4.8% | 6.1% in CQTM |
| Microsoft Corp MSFT | 2 of 4 | 2.1% | 2.5% in WQTM |
| Quantinuum Inc.-swap-nmra-l | 1 of 4 | 9.2% | 9.2% in QTUP |
| Rigetti Computing, Inc.-swap-nmra-l | 1 of 4 | 8.3% | 8.3% in QTUP |
| Pasqal Holding Sa PSQL | 1 of 4 | 8.2% | 8.2% in QTUP |
| D-wave Quantum Inc.-swap-nmra-l | 1 of 4 | 8.1% | 8.1% in QTUP |
| Xanadu Quantum Technologies Ltd XNDU | 1 of 4 | 6.8% | 6.8% in QTUP |
| Alphabet Inc GOOGL | 1 of 4 | 5.5% | 5.5% in CQTM |

The 15 most widely held of 26. Each row counts the ten largest holdings of each fund, so a fund missing from a row may still hold that company lower down. Weights are of the funds that name it, not of the theme.

### The 4 largest quantum computing ETFs

ETFIQ covers 4 quantum computing ETFs. The largest are QTUM ( $5.3bn ), WQTM ( $329m ) and QTUP ( $17m ); fees run 0.35% to 0.77% , as of Jun 30 to Oct 20, 2026 .

- QTUM Defiance Quantum ETF $5.3bn 0.40%

- WQTM WisdomTree Quantum Computing Fund $329m 0.45%

- QTUP Defiance Long Pure Quantum ETF $17m 0.77%

- CQTM Corgi Quantum Computing ETF $15m 0.35%

| Ticker | Fund | Issuer | Net assets | In the S&P 500 | Active share | Total return 1Y | vs its benchmark 1Y | Fee |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| QTUM | Defiance Quantum ETF | Defiance | $5.3bn | 37.2% | 82.1% | +30.0% | not measured | 0.40% |
| WQTM | WisdomTree Quantum Computing Fund | WisdomTree | $329m | 38.5% | 83.7% | +1.4% | −14.6 pts vs ACWI | 0.45% |
| QTUP | Defiance Long Pure Quantum ETF | Defiance | $17m | not published | not published | first traded 133 days ago | · | 0.77% |
| CQTM | Corgi Quantum Computing ETF | Corgi | $15m | 16.2% | 96.2% | first traded 168 days ago | · | 0.35% |

### How much of each pair is the same fund

The closest pair is CQTM and QTUP , which hold 47% of their weight in the same companies. The furthest apart is QTUM and QTUP at 7%. The middle pair of the 6 is 28%.

| | QTUM | WQTM | QTUP | CQTM |
| --- | --- | --- | --- | --- |
| QTUM | · | 31% | 7% | 12% |
| WQTM | 31% | · | 26% | 41% |
| QTUP | 7% | 26% | · | 47% |
| CQTM | 12% | 41% | 47% | · |

Weight overlap adds the smaller of the two weights for every company both funds hold. Funds with a cut-short book are left out, not compared short.

### What each fund holds alone

| Fund | Largest holding it alone has | Weight | All of its own names |
| --- | --- | --- | --- |
| QTUM | Global Unichip Corp | 2.4% | 65.8% |
| WQTM | DELL TECHNOLOGIES INC DELL | 2.6% | 22.2% |
| QTUP | Quantinuum Inc.-swap-nmra-l | 9.2% | 32.9% |

### Questions people ask

How many quantum computing ETFs are there? ETFIQ covers 4 US listed quantum computing ETFs as of Oct 21, 2026. That is every one it can measure from the fund’s own published holdings. What is the largest quantum computing ETF? QTUM , Defiance Quantum ETF, at $5.3bn in net assets as of Oct 20, 2026, the largest of the 4 quantum computing ETFs with a published size. What is the cheapest quantum computing ETF? CQTM , Corgi Quantum Computing ETF, at 0.35% a year by its prospectus filed May 14, 2026, the lowest fee of the 4 quantum computing ETFs that publish one. Which quantum computing ETF has performed best over the past year? QTUM , Defiance Quantum ETF, at +30.0% total return over the year to Oct 21, 2026, the highest of the 2 quantum computing ETFs with a full year of trading behind them. Past returns do not predict future ones. What do quantum computing ETFs hold? Funds that hold the companies building quantum computers, and the hardware, software and services around them. Between them the 4 quantum computing ETFs ETFIQ can read name 26 companies in their ten largest holdings, by holdings dated Jun 30, 2026 to Oct 21, 2026, most widely IONQ INC, which is among the ten largest of 3 of them. Do quantum computing ETFs hold the same companies? It depends which two. Across the 6 pairs of the 4 quantum computing ETFs with a full published book, by holdings dated Jun 30, 2026 to Oct 21, 2026, CQTM and QTUP hold 47% of their weight in the same companies, QTUM and QTUP hold 7%, and the middle pair holds 28%. Two funds sold on one theme are not the same fund.

### What the issuers say about this theme

The issuers behind these quantum computing funds publish their own work on this theme. These are their pages and words, not ETFIQ’s. A fund company writing about a theme it sells is making a case.

| Issuer | What they publish | Kind |
| --- | --- | --- |
| Defiance | Defiance Insights | Their research index |
| WisdomTree | WisdomTree blog | Their research index |

### Where to next

### Where these figures came from

ETFIQ links to the documents behind every figure; a link is not an endorsement.

ETFIQ is an independent publisher and makes no recommendations. Standards and sources

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Source: ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.
Cite: ETFIQ, Quantum computing ETFs: what each one holds, data as of Oct 21, 2026. https://etfiq.com/themes/quantum
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