Kailera Therapeutics, Inc.: which funds bought and sold
Institutions that bought and sold Kailera Therapeutics 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, 96 institutions that filed 13F reports for both quarters added to or opened positions in Kailera Therapeutics, and 0 cut or closed them. Together they added a net 114.1M shares, — on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 31.2M shares; index fund managers were net buyers of 9.5M shares. 96 opened a new position and 0 sold out entirely.
Bought, Q2 2026 96 institutions, 96 of them new holders Sold, Q2 2026 0 institutions, 0 of them sold out
Net change, all compared +114.1M shares (—)
Net change, active managers +31.2M shares (—), 25 bought, 0 sold
Buyers versus sellers
96 bought 0 sold
Active managers and hedge funds 25 bought · 0 sold · +31.2M
Index fund managers 8 bought · 0 sold · +9.5M
Other institutions 63 bought · 0 sold · +73.4M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Bain Capital Investors LLC | +26.3M New position | 26.3M | $578M |
| Bain Capital Life Sciences Investors, LLC | +22.6M New position | 22.6M | $498M |
| RTW Investments, LP Hedge fund | +10.8M New position | 10.8M | $237M |
| Canada Pension Plan Investment Board | +7.3M New position | 7.3M | $161M |
| Atlas Venture Life Science Advisors, LLC | +5.2M New position | 5.2M | $114M |
| FMR LLC Active manager | +4.0M New position | 4.0M | $87.5M |
| Blackrock, Inc. Index funds | +3.9M New position | 3.9M | $86.5M |
| Price T Rowe Associates Inc Active manager | +3.5M New position | 3.5M | $77.9M |
| Citadel Advisors LLC Hedge fund | +3.2M New position | 3.2M | $71.4M |
| Adage Capital Partners Gp, L.L.C. Hedge fund | +3.2M New position | 3.2M | $70.7M |
| Wellington Management Group LLP Active manager | +2.9M New position | 2.9M | $64.3M |
| Royalty Pharma Sub-Manager, LLC | +2.5M New position | 2.5M | $54.1M |
| Siren, L.L.C. | +2.2M New position | 2.2M | $48.8M |
| Vanguard Capital Management LLC Index funds | +1.7M New position | 1.7M | $37.3M |
| Vanguard Portfolio Management LLC Index funds | +1.7M New position | 1.7M | $36.4M |
| Geode Capital Management, LLC Index funds | +1.1M New position | 1.1M | $25M |
| Frazier Life Sciences Management, L.P. | +1.1M New position | 1.1M | $24.2M |
| Trails Edge Capital Partners, LP | +985K New position | 985K | $21.7M |
| UBS Group AG | +973K New position | 973K | $21.4M |
| Ameriprise Financial Inc | +821K New position | 821K | $18.1M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| RTW Investments, LP Hedge fund | +10.8M New position | 10.8M | $237M |
| FMR LLC Active manager | +4.0M New position | 4.0M | $87.5M |
| Price T Rowe Associates Inc Active manager | +3.5M New position | 3.5M | $77.9M |
| Citadel Advisors LLC Hedge fund | +3.2M New position | 3.2M | $71.4M |
| Adage Capital Partners Gp, L.L.C. Hedge fund | +3.2M New position | 3.2M | $70.7M |
| Wellington Management Group LLP Active manager | +2.9M New position | 2.9M | $64.3M |
| Deep Track Capital, LP Hedge fund | +700K New position | 700K | $15.4M |
| Vestal Point Capital, LP Hedge fund | +575K New position | 575K | $12.7M |
| Cormorant Asset Management, LP Hedge fund | +550K New position | 550K | $12.1M |
| Federated Hermes, Inc. Active manager | +434K New position | 434K | $9.6M |
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 |
|---|---|---|
| Bain Capital Investors LLC | 26.3M | $578M |
| Bain Capital Life Sciences Investors, LLC | 22.6M | $498M |
| RTW Investments, LPHedge fund | 10.8M | $237M |
| Canada Pension Plan Investment Board | 7.3M | $161M |
| Atlas Venture Life Science Advisors, LLC | 5.2M | $114M |
| FMR LLCActive manager | 4.0M | $87.5M |
| Blackrock, Inc.Index funds | 3.9M | $86.5M |
| Price T Rowe Associates IncActive manager | 3.5M | $77.9M |
| Citadel Advisors LLCHedge fund | 3.2M | $71.4M |
| Adage Capital Partners Gp, L.L.C.Hedge fund | 3.2M | $70.7M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| No institution sold its whole holding. | ||
Who holds the shares
- Institutions reporting
- 99
- Ten largest holders
- 77.5% of 13F-reported shares
- Index fund managers
- 8.2% of 13F-reported shares
- Active managers and hedge funds
- 27.8% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 25 | 0 | 25 | 0 | +31.2M | — |
| Index fund managers | 8 | 0 | 8 | 0 | +9.5M | — |
| Other institutions | 63 | 0 | 63 | 0 | +73.4M | — |
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