Who owns Quantinuum Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of QNT from SEC Form 13F filings across 174 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 174 institutions disclosed 34.0M shares of Quantinuum Inc. worth $2.77B — about 100.2% of shares outstanding; the largest disclosed holder is Capital World Investors. Source: SEC Form 13F filings, parsed by EvidInvest.
174
13F holders
$2.77B
value, 2026 filers
100.2%
of shares outstanding (34.0M sh)
174
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of QNT's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Capital World InvestorsNEW | 4.6M | $372.7M | 0.0% | 13.4% | new |
| 2 | CITADEL ADVISORS LLCNEW | 2.3M | $188.0M | 0.0% | 6.8% | new |
| 3 | BlackRock, Inc.NEW | 2.3M | $184.7M | 0.0% | 6.7% | new |
| 4 | Capital Research Global InvestorsNEW | 1.8M | $143.4M | 0.0% | 5.2% | new |
| 5 | Defiance ETFs, LLCNEW | 1.2M | $95.3M | 1.3% | 3.6% | new |
| 6 | Penserra Capital Management LLCNEW | 1.2M | $98.1M | 0.8% | 3.5% | new |
| 7 | WELLINGTON MANAGEMENT GROUP LLPNEW | 1.1M | $92.4M | 0.0% | 3.3% | new |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLCNEW | 1.0M | $84.1M | 0.0% | 3% | new |
| 9 | Capital International InvestorsNEW | 961,428 | $78.6M | 0.0% | 2.8% | new |
| 10 | VANGUARD CAPITAL MANAGEMENT LLCNEW | 949,283 | $77.6M | 0.0% | 2.8% | new |
| 11 | Balyasny Asset Management L.P.NEW | 821,918 | $67.2M | 0.1% | 2.4% | new |
| 12 | ALLIANCEBERNSTEIN L.P.NEW | 789,326 | $64.5M | 0.0% | 2.3% | new |
| 13 | VOYA INVESTMENT MANAGEMENT LLCNEW | 691,437 | $56.5M | 0.0% | 2% | new |
| 14 | FIL LtdNEW | 666,766 | $54.5M | 0.0% | 2% | new |
| 15 | FMR LLCNEW | 642,800 | $52.5M | 0.0% | 1.9% | new |
| 16 | NORGES BANKNEW | 564,000 | $46.1M | 0.0% | 1.7% | new |
| 17 | FRANKLIN RESOURCES INCNEW | 545,323 | $44.6M | 0.0% | 1.6% | new |
| 18 | Shannon River Fund Management LLCNEW | 469,355 | $38.4M | 3.4% | 1.4% | new |
| 19 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/NEW | 463,913 | $37.9M | 0.0% | 1.4% | new |
| 20 | Mubadala Investment Co PJSCNEW | 449,500 | $36.7M | 0.1% | 1.3% | new |
| 21 | PRINCIPAL FINANCIAL GROUP INCNEW | 440,079 | $36.0M | 0.0% | 1.3% | new |
| 22 | FEDERATED HERMES, INC.NEW | 393,800 | $32.2M | 0.0% | 1.2% | new |
| 23 | MARSHALL WACE, LLPNEW | 392,637 | $32.1M | 0.0% | 1.2% | new |
| 24 | Jupiter Topco LLCNEW | 384,356 | $31.4M | 0.0% | 1.1% | new |
| 25 | Bank of New York Mellon CorpNEW | 377,133 | $30.8M | 0.0% | 1.1% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.