Quantinuum Inc.: which funds bought and sold
Institutions that bought and sold Quantinuum shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 164 institutions that filed 13F reports for both quarters added to or opened positions in Quantinuum, and 0 cut or closed them. Together they added a net 32.4M shares, — on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 20.8M shares; index fund managers were net buyers of 4.3M shares. 164 opened a new position and 0 sold out entirely.
Bought, Q2 2026 164 institutions, 164 of them new holders Sold, Q2 2026 0 institutions, 0 of them sold out
Net change, all compared +32.4M shares (—)
Net change, active managers +20.8M shares (—), 50 bought, 0 sold
Buyers versus sellers
164 bought 0 sold
Active managers and hedge funds 50 bought · 0 sold · +20.8M
Index fund managers 5 bought · 0 sold · +4.3M
Other institutions 109 bought · 0 sold · +7.3M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Capital World Investors Active manager | +4.6M New position | 4.6M | $373M |
| Citadel Advisors LLC Hedge fund | +2.3M New position | 2.3M | $188M |
| Blackrock, Inc. Index funds | +2.3M New position | 2.3M | $185M |
| Capital Research Global Investors Active manager | +1.8M New position | 1.8M | $143M |
| Defiance Etfs, LLC | +1.2M New position | 1.2M | $95.3M |
| Penserra Capital Management LLC | +1.2M New position | 1.2M | $98.1M |
| Wellington Management Group LLP Active manager | +1.1M New position | 1.1M | $92.4M |
| Vanguard Portfolio Management LLC Index funds | +1.0M New position | 1.0M | $84.1M |
| Capital International Investors Active manager | +961K New position | 961K | $78.6M |
| Vanguard Capital Management LLC Index funds | +949K New position | 949K | $77.6M |
| Balyasny Asset Management L.P. Hedge fund | +822K New position | 822K | $67.2M |
| Alliancebernstein L.P. Active manager | +789K New position | 789K | $64.5M |
| Voya Investment Management LLC | +691K New position | 691K | $56.5M |
| Fil Ltd Active manager | +667K New position | 667K | $54.5M |
| FMR LLC Active manager | +643K New position | 643K | $52.5M |
| Franklin Resources Inc Active manager | +545K New position | 545K | $44.6M |
| Shannon River Fund Management LLC Hedge fund | +469K New position | 469K | $38.4M |
| Massachusetts Financial Services Co Active manager | +464K New position | 464K | $37.9M |
| Mubadala Investment Co Pjsc | +450K New position | 450K | $36.7M |
| Principal Financial Group Inc | +440K New position | 440K | $36M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Capital World Investors Active manager | +4.6M New position | 4.6M | $373M |
| Citadel Advisors LLC Hedge fund | +2.3M New position | 2.3M | $188M |
| Capital Research Global Investors Active manager | +1.8M New position | 1.8M | $143M |
| Wellington Management Group LLP Active manager | +1.1M New position | 1.1M | $92.4M |
| Capital International Investors Active manager | +961K New position | 961K | $78.6M |
| Balyasny Asset Management L.P. Hedge fund | +822K New position | 822K | $67.2M |
| Alliancebernstein L.P. Active manager | +789K New position | 789K | $64.5M |
| Fil Ltd Active manager | +667K New position | 667K | $54.5M |
| FMR LLC Active manager | +643K New position | 643K | $52.5M |
| Franklin Resources Inc Active manager | +545K New position | 545K | $44.6M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| No institution cut its holding. | |||
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| None of the active managers on our list. | |||
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Capital World InvestorsActive manager | 4.6M | $373M |
| Citadel Advisors LLCHedge fund | 2.3M | $188M |
| Blackrock, Inc.Index funds | 2.3M | $185M |
| Capital Research Global InvestorsActive manager | 1.8M | $143M |
| Penserra Capital Management LLC | 1.2M | $98.1M |
| Defiance Etfs, LLC | 1.2M | $95.3M |
| Wellington Management Group LLPActive manager | 1.1M | $92.4M |
| Vanguard Portfolio Management LLCIndex funds | 1.0M | $84.1M |
| Capital International InvestorsActive manager | 961K | $78.6M |
| Vanguard Capital Management LLCIndex funds | 949K | $77.6M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| No institution sold its whole holding. | ||
Who holds the shares
- Institutions reporting
- 172
- Ten largest holders
- 51.0% of 13F-reported shares
- Index fund managers
- 12.6% of 13F-reported shares
- Active managers and hedge funds
- 62.1% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 50 | 0 | 50 | 0 | +20.8M | — |
| Index fund managers | 5 | 0 | 5 | 0 | +4.3M | — |
| Other institutions | 109 | 0 | 109 | 0 | +7.3M | — |