Quantinuum Inc.
Ownership
Ownership Structure
Who owns Quantinuum Inc. (QNT)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.4% of the shares are freely tradable; institutional investors hold 51.0%.
Largest Shareholders
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| American Funds IS® Asset Allocation 1 | 5.18 | 1,912,196 | +0.0 | 06/30/2026 |
| Capital Group Growth Fnd of Amer Comp | 4.78 | 1,764,100 | +0.0 | 06/30/2026 |
| American Funds Growth Fd of Amer A | 4.78 | 1,764,100 | +0.0 | 06/30/2026 |
| Defiance Quantum ETF | 3.22 | 1,187,528 | +0.1 | 08/31/2026 |
| iShares A.I. Innovation and Tech Act ETF | 2.67 | 985,126 | +0.1 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.41 | 889,711 | +0.1 | 07/31/2026 |
| American Funds Global Balanced R-6 | 2.02 | 743,727 | +0.0 | 06/30/2026 |
| American Funds Cptl Wld Gr&Inc A | 1.83 | 675,000 | +0.0 | 06/30/2026 |
| Capital Group World Growth & Inc Cmp | 1.83 | 675,000 | +0.0 | 06/30/2026 |
| Vanguard Small Cap Index | 1.74 | 642,487 | +0.2 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 25, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.