Quantinuum Inc. (QNT) Ownership
QNT ownership summary
as of October 18, 2026- Institutions
- 95.8% of shares outstanding
- Insiders
- 7.21% of shares outstanding
- Shares outstanding
- 39.3M
- Float
- 32.2M shares available to trade
- Short interest
- 8.02% 5.3M shares short
- Days to cover
- 2.82 short interest up 43.7% vs prior month
- Institutions 95.78%
- Insiders 7.21%
QNT top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Capital World Investors | 11.61% | 4.6M | $166.6M | +4.6M (0.0%) | June 30, 2026 |
| 2 | Citadel Advisors Llc | 5.86% | 2.3M | $84.1M | +2.3M (0.0%) | June 30, 2026 |
| 3 | BlackRock Inc | 5.75% | 2.3M | $82.6M | +2.3M (0.0%) | June 30, 2026 |
| 4 | Capital Research Global Investors | 4.47% | 1.8M | $64.1M | +1.8M (0.0%) | June 30, 2026 |
| 5 | Defiance ETFs, LLC | 3.10% | 1.2M | $44.4M | +1.2M (0.0%) | June 30, 2026 |
| 6 | Penserra Capital Management, LLC | 3.06% | 1.2M | $43.9M | +1.2M (0.0%) | June 30, 2026 |
| 7 | Wellington Management Company LLP | 2.88% | 1.1M | $41.3M | +1.1M (0.0%) | June 30, 2026 |
| 8 | Vanguard Portfolio Management, LLC | 2.62% | 1.0M | $37.6M | +1.0M (0.0%) | June 30, 2026 |
| 9 | Capital Research & Mgmt Co - Division 3 | 2.45% | 961K | $35.1M | +961,428 (0.0%) | June 30, 2026 |
| 10 | Vanguard Capital Management, LLC | 2.42% | 949K | $34.7M | +949,283 (0.0%) | June 30, 2026 |
| 11 | Balyasny Asset Management LLC | 2.09% | 822K | $30.0M | +821,918 (0.0%) | June 30, 2026 |
| 12 | AllianceBernstein L.P. | 2.01% | 789K | $28.8M | +789,326 (0.0%) | June 30, 2026 |
| 13 | VOYA INVESTMENT MANAGEMENT LLC | 1.76% | 691K | $25.3M | +691,437 (0.0%) | June 30, 2026 |
| 14 | Fidelity International Ltd | 1.70% | 667K | $24.4M | +666,766 (0.0%) | June 30, 2026 |
| 15 | FMR Inc | 1.64% | 643K | $23.5M | +642,800 (0.0%) | June 30, 2026 |
| 16 | NORGES BANK | 1.44% | 564K | $20.6M | +564,000 (0.0%) | June 30, 2026 |
| 17 | Franklin Templeton Inc | 1.39% | 545K | $19.9M | +545,323 (0.0%) | June 30, 2026 |
| 18 | Shannon River Fund Management LLC | 1.20% | 469K | $17.2M | +469,355 (0.0%) | June 30, 2026 |
| 19 | Massachusetts Financial Services Company | 1.18% | 464K | $17.0M | +463,913 (0.0%) | June 30, 2026 |
| 20 | Mubadala Investment Company PJSC | 1.14% | 450K | $16.4M | +449,500 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 20 holders added 23.5M shares and 0 cut 0.
QNT top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | American Funds IS® Asset Allocation 1 | 4.87% | 1.9M | $69.9M | +1.9M (0.0%) | June 30, 2026 |
| 2 | American Funds Growth Fd of Amer A | 4.49% | 1.8M | $64.5M | +1.8M (0.0%) | June 30, 2026 |
| 3 | Defiance Quantum ETF | 3.34% | 1.3M | $47.9M | +7,012 (+0.5%) | September 30, 2026 |
| 4 | Vanguard MStar Total Stk Mkt Idx Invest | 2.27% | 891K | $32.6M | +974 (+0.1%) | August 31, 2026 |
| 5 | iShares A.I. Innovation and Tech Act ETF | 2.06% | 809K | $29.6M | — | September 30, 2026 |
| 6 | American Funds Global Balanced R-6 | 1.89% | 744K | $27.2M | +743,727 (0.0%) | June 30, 2026 |
| 7 | American Funds Cptl Wld Gr&Inc A | 1.72% | 675K | $24.7M | +675,000 (0.0%) | June 30, 2026 |
| 8 | Vanguard Small Cap Index | 1.64% | 642K | $23.5M | −77 (−0.0%) | August 31, 2026 |
| 9 | Vanguard Explorer Inv | 1.48% | 580K | $21.2M | +579,730 (0.0%) | June 30, 2026 |
| 10 | Capital Group Core Balanced ETF | 1.40% | 550K | $20.1M | +2,650 (+0.5%) | September 30, 2026 |
| 11 | American Funds New Economy A | 1.36% | 534K | $19.5M | +533,565 (0.0%) | June 30, 2026 |
| 12 | WisdomTree Quantum Computing Fund | 1.18% | 463K | $16.9M | +4,220 (+0.9%) | September 30, 2026 |
| 13 | Allianz Technology Trust Ord | 1.13% | 445K | $16.3M | +165,705 (+59.3%) | August 31, 2026 |
| 14 | Fidelity World A-Dis-EUR | 1.05% | 412K | $15.1M | +377 (+0.1%) | August 31, 2026 |
| 15 | Capital Group Growth ETF | 0.87% | 343K | $12.5M | +864 (+0.3%) | September 30, 2026 |
| 16 | Capital Group U.S. Small and Mid Cap ETF | 0.87% | 341K | $12.5M | +2,418 (+0.7%) | September 30, 2026 |
| 17 | AB Disruptors ETF | 0.81% | 317K | $11.6M | +732 (+0.2%) | September 30, 2026 |
| 18 | Capital Group Global Equity Canada F | 0.78% | 308K | $11.3M | +307,800 (0.0%) | June 30, 2026 |
| 19 | American Funds IS® Growth 1 | 0.76% | 297K | $10.9M | +296,933 (0.0%) | June 30, 2026 |
| 20 | WisdomTree Quantum Computing ETF USD Acc | 0.73% | 286K | $10.5M | +3,878 (+1.4%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
Who owns QNT
Institutional investors own 95.8% of Quantinuum's shares and insiders 7.21%. The largest holder is Capital World Investors with 11.61% of the shares (4.6M), as of June 30, 2026. Among the top 20 institutions, 20 added shares and 0 reduced their stake in the latest filings. Short interest is 8.02% of the float, or 2.82 days of average trading volume.
Related: QNT analyst forecast, QNT key metrics. See the QNT stock overview for the latest quote and news.
QNT ownership FAQ
Who owns the most Quantinuum stock?
The largest shareholders of Quantinuum are Capital World Investors (11.61%), Citadel Advisors Llc (5.86%), BlackRock Inc (5.75%), Capital Research Global Investors (4.47%), Defiance ETFs, LLC (3.10%).
What percentage of Quantinuum is owned by institutions?
Institutions hold 95.8% of Quantinuum's shares outstanding; insiders hold 7.21%.
Which funds own Quantinuum?
The largest fund holders of Quantinuum are American Funds IS® Asset Allocation 1 (4.87%), American Funds Growth Fd of Amer A (4.49%), Defiance Quantum ETF (3.34%), Vanguard MStar Total Stk Mkt Idx Invest (2.27%), iShares A.I. Innovation and Tech Act ETF (2.06%).
What is Quantinuum's short interest?
5.3M shares of Quantinuum were sold short, 8.02% of the float; at the average daily volume it would take 2.82 days to cover.
How many shares of Quantinuum are outstanding?
Quantinuum has 39.3M shares outstanding, of which 32.2M are in the public float.