{"url":"https://etfiq.com/themes/quantum","section":"themes","title":"Quantum computing ETFs: 4 funds, largest first | ETFIQ","description":"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.","as_of":"Oct 21, 2026","structured_data":[{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"How many quantum computing ETFs are there?","acceptedAnswer":{"@type":"Answer","text":"ETFIQ covers 4 US listed quantum computing ETFs as of Oct 21, 2026. That is every one it can measure from the fund\u2019s own published holdings."}},{"@type":"Question","name":"What is the largest quantum computing ETF?","acceptedAnswer":{"@type":"Answer","text":"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."}},{"@type":"Question","name":"What is the cheapest quantum computing ETF?","acceptedAnswer":{"@type":"Answer","text":"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."}},{"@type":"Question","name":"Which quantum computing ETF has performed best over the past year?","acceptedAnswer":{"@type":"Answer","text":"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."}},{"@type":"Question","name":"What do quantum computing ETFs hold?","acceptedAnswer":{"@type":"Answer","text":"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."}},{"@type":"Question","name":"Do quantum computing ETFs hold the same companies?","acceptedAnswer":{"@type":"Answer","text":"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."}}]},{"@type":"ItemList","name":"Quantum computing ETFs: 4 funds, largest first","numberOfItems":4,"itemListElement":[{"@type":"ListItem","position":1,"name":"QTUM","url":"https://etfiq.com/funds/qtum"},{"@type":"ListItem","position":2,"name":"WQTM","url":"https://etfiq.com/funds/wqtm"},{"@type":"ListItem","position":3,"name":"QTUP","url":"https://etfiq.com/funds/qtup"},{"@type":"ListItem","position":4,"name":"CQTM","url":"https://etfiq.com/funds/cqtm"}]},{"@type":"ItemList","name":"The 4 largest quantum computing ETFs","itemListOrder":"https://schema.org/ItemListOrderDescending","numberOfItems":4,"itemListElement":[{"@type":"ListItem","position":1,"name":"QTUM","url":"https://etfiq.com/funds/qtum"},{"@type":"ListItem","position":2,"name":"WQTM","url":"https://etfiq.com/funds/wqtm"},{"@type":"ListItem","position":3,"name":"QTUP","url":"https://etfiq.com/funds/qtup"},{"@type":"ListItem","position":4,"name":"CQTM","url":"https://etfiq.com/funds/cqtm"}]},{"@type":"Dataset","name":"Quantum computing ETFs: what each one holds","description":"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.","url":"https://etfiq.com/themes/quantum","dateModified":"2026-10-21","inLanguage":"en","creator":{"@id":"https://etfiq.com/#org"},"publisher":{"@id":"https://etfiq.com/#org"},"license":"https://etfiq.com/license/","isAccessibleForFree":true,"creativeWorkStatus":"Published","distribution":[{"@type":"DataDownload","encodingFormat":"application/json","contentUrl":"https://etfiq.com/data/thematic.json"}],"variableMeasured":["Weight overlap with the S&P 500","Active share","Holdings","Top ten share of the fund","Total return","Fee for the differing part","Expense ratio"],"keywords":["exchange-traded funds","ETF","Thematic ETFs","fund data","SEC filings"]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Thematic ETFs","item":"https://etfiq.com/themes/"},{"@type":"ListItem","position":3,"name":"Quantum computing","item":"https://etfiq.com/themes/quantum"}]},{"@type":"WebPage","name":"Quantum computing ETFs: 4 funds, largest first","description":"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.","url":"https://etfiq.com/themes/quantum","dateModified":"2026-10-21","isPartOf":{"@type":"WebSite","name":"ETFIQ","url":"https://etfiq.com"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".lede",".faq"]},"publisher":{"@id":"https://etfiq.com/#org"}}],"characters":7575,"truncated":false,"content":"ETFIQ / Thematic ETFs / Quantum computing \n \n Data as of Oct 21, 2026 .\n Quantum computing ETFs: what each one holds\n 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.\n 4 US listed quantum computing ETFs \n $5.3bn The largest, QTUM \n 0.35% The cheapest, CQTM \n +30.0% Best one year, QTUM \n\n The short answers\n 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\n 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.\n Quantum computing ETFs, the companies their ten largest holdings name. Source: each fund's latest SEC filing or its issuer\u2019s own daily holdings file, read by ETFIQ. Company Among the ten largest of Average weight where it is Largest, and in which fund \n IONQ INC IONQ 3 of 4 11.0% 16.0% in CQTM \n QUANTINUUM INC QNT 3 of 4 6.5% 7.3% in CQTM \n Horizon Quantum Holdings Ltd HQ 3 of 4 5.2% 8.6% in QTUP \n INFLEQTION INC INFQ 3 of 4 5.1% 7.8% in QTUP \n QUANTUM COMPUTING INC QUBT 3 of 4 4.0% 4.8% in QTUP \n D-WAVE QUANTUM INC QBTS 2 of 4 7.1% 8.7% in CQTM \n RIGETTI COMPUTING INC RGTI 2 of 4 6.1% 7.1% in CQTM \n INTERNATIONAL BUSINESS MACHINES CORP IBM 2 of 4 4.8% 6.1% in CQTM \n Microsoft Corp MSFT 2 of 4 2.1% 2.5% in WQTM \n Quantinuum Inc.-swap-nmra-l 1 of 4 9.2% 9.2% in QTUP \n Rigetti Computing, Inc.-swap-nmra-l 1 of 4 8.3% 8.3% in QTUP \n Pasqal Holding Sa PSQL 1 of 4 8.2% 8.2% in QTUP \n D-wave Quantum Inc.-swap-nmra-l 1 of 4 8.1% 8.1% in QTUP \n Xanadu Quantum Technologies Ltd XNDU 1 of 4 6.8% 6.8% in QTUP \n Alphabet Inc GOOGL 1 of 4 5.5% 5.5% in CQTM \n \n 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.\n The 4 largest quantum computing ETFs\n 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 .\n QTUM Defiance Quantum ETF $5.3bn 0.40% \n WQTM WisdomTree Quantum Computing Fund $329m 0.45% \n QTUP Defiance Long Pure Quantum ETF $17m 0.77% \n CQTM Corgi Quantum Computing ETF $15m 0.35% \n \n Quantum computing ETFs: what each one holds, as of Oct 21, 2026. Source: ETFIQ. Ticker Fund Issuer Net assets In the S&P 500 Active share Total return 1Y vs its benchmark 1Y Fee \n QTUM Defiance Quantum ETF Defiance $5.3bn 37.2% 82.1% +30.0% not measured 0.40% \n WQTM WisdomTree Quantum Computing Fund WisdomTree $329m 38.5% 83.7% +1.4% \u221214.6 pts vs ACWI 0.45% \n QTUP Defiance Long Pure Quantum ETF Defiance $17m not published not published first traded 133 days ago \u00b7 0.77% \n CQTM Corgi Quantum Computing ETF Corgi $15m 16.2% 96.2% first traded 168 days ago \u00b7 0.35% \n \n How much of each pair is the same fund\n 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%.\n Quantum computing ETFs, the share of each pair\u2019s weight held in the same companies. Read across or down; the figure is the same either way. Cells are shaded against the closest pair here, 47%. Source: each fund\u2019s own filed or daily holdings, read by ETFIQ. QTUM WQTM QTUP CQTM \n QTUM \u00b7 31% 7% 12% \n WQTM 31% \u00b7 26% 41% \n QTUP 7% 26% \u00b7 47% \n CQTM 12% 41% 47% \u00b7 \n \n 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.\n What each fund holds alone\n Quantum computing ETFs, the largest holding no other fund in the grid holds. Source: ETFIQ. Fund Largest holding it alone has Weight All of its own names \n QTUM Global Unichip Corp 2.4% 65.8% \n WQTM DELL TECHNOLOGIES INC DELL 2.6% 22.2% \n QTUP Quantinuum Inc.-swap-nmra-l 9.2% 32.9% \n \n Questions people ask\n 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\u2019s 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\n The issuers behind these quantum computing funds publish their own work on this theme. These are their pages and words, not ETFIQ\u2019s. A fund company writing about a theme it sells is making a case.\n Issuer material on this theme. Links leave ETFIQ. Source: each issuer\u2019s own site. Issuer What they publish Kind \n Defiance Defiance Insights Their research index \n WisdomTree WisdomTree blog Their research index \n \n Where to next\n The largest quantum computing ETFs The cheapest quantum computing ETFs The quantum computing ETFs least like the S&P 500 The most concentrated quantum computing ETFs Every thematic ETF Compare two funds The vocabulary Where these figures came from\n Fund holdings from SEC Form N-PORT and from the issuers own daily files SEC EDGAR, full-text search of fund filings SEC Form N-PORT, what a fund filed it holds Rule 19a-1, what a distribution notice must say ETFIQ links to the documents behind every figure; a link is not an endorsement.\n ETFIQ is an independent publisher and makes no recommendations. Standards and sources \n Cite this page. ETFIQ, Quantum computing ETFs: what each one holds, data as of Oct 21, 2026. https://etfiq.com/themes/quantum Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms. The underlying files are at Open data .\n Other forms Plain ETFIQ, Quantum computing ETFs: what each one holds, data as of Oct 21, 2026. https://etfiq.com/themes/quantum APA ETFIQ. (Oct 21, 2026). Quantum computing ETFs: what each one holds. Retrieved from https://etfiq.com/themes/quantum Markdown [Quantum computing ETFs: what each one holds (ETFIQ, Oct 21, 2026)](https://etfiq.com/themes/quantum)","source":"ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.","publisher":{"@id":"https://etfiq.com/#org","name":"ETFIQ","url":"https://etfiq.com"},"license":"https://etfiq.com/license/","license_text":"Figures ETFIQ computes are free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms.","citation":"ETFIQ, Quantum computing ETFs: what each one holds, data as of Oct 21, 2026. https://etfiq.com/themes/quantum"}