Oruka Therapeutics, Inc.: which funds bought and sold
Institutions that bought and sold Oruka 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, 189 institutions that filed 13F reports for both quarters added to or opened positions in Oruka Therapeutics, and 74 cut or closed them. Together they added a net 19.6M shares, +37.1% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 9.6M shares (+42.2%); index fund managers were net buyers of 4.1M shares (+44.2%). 96 opened a new position and 27 sold out entirely.
Bought, Q2 2026 189 institutions, 96 of them new holders Sold, Q2 2026 74 institutions, 27 of them sold out
Net change, all compared +19.6M shares (+37.1%)
Net change, active managers +9.6M shares (+42.2%), 38 bought, 19 sold
Buyers versus sellers
189 bought 14 74 sold
Active managers and hedge funds 38 bought · 19 sold · +9.6M
Index fund managers 12 bought · 0 sold · +4.1M
Other institutions 139 bought · 55 sold · +6.0M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Capital World Investors Active manager | +3.4M New position | 3.4M | $324M |
| FMR LLC Active manager | +1.6M +21.9% | 9.1M | $862M |
| RA Capital Management, L.P. Hedge fund | +1.6M New position | 1.6M | $148M |
| Blackrock, Inc. Index funds | +1.5M +41.5% | 5.0M | $475M |
| Bellevue Group AG | +1.2M +226.9% | 1.7M | $158M |
| T. Rowe Price Investment Management, Inc. Active manager | +1.1M New position | 1.1M | $105M |
| RTW Investments, LP Hedge fund | +1.1M +52.5% | 3.1M | $299M |
| BNP Paribas Financial Markets | +1.1M +9773.9% | 1.1M | $103M |
| State Street Corp Index funds | +1.1M +65.7% | 2.7M | $254M |
| Summit Partners Public Asset Management, LLC | +658K New position | 658K | $62.7M |
| Jpmorgan Chase & Co | +632K +2795.8% | 655K | $60.7M |
| Pictet Asset Management Holding SA | +619K New position | 619K | $58.9M |
| Franklin Resources Inc Active manager | +617K +61.5% | 1.6M | $154M |
| Aberdeen Group PLC | +571K +754.8% | 647K | $61.6M |
| Vanguard Capital Management LLC Index funds | +501K +27.0% | 2.4M | $225M |
| Geode Capital Management, LLC Index funds | +475K +49.8% | 1.4M | $136M |
| UBS Group AG | +427K +201.2% | 639K | $60.8M |
| Lord, Abbett & Co. LLC | +390K New position | 390K | $37.1M |
| Massachusetts Financial Services Co Active manager | +364K New position | 364K | $34.7M |
| Voya Investment Management LLC | +335K +502.3% | 401K | $38.2M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Capital World Investors Active manager | +3.4M New position | 3.4M | $324M |
| FMR LLC Active manager | +1.6M +21.9% | 9.1M | $862M |
| RA Capital Management, L.P. Hedge fund | +1.6M New position | 1.6M | $148M |
| T. Rowe Price Investment Management, Inc. Active manager | +1.1M New position | 1.1M | $105M |
| RTW Investments, LP Hedge fund | +1.1M +52.5% | 3.1M | $299M |
| Franklin Resources Inc Active manager | +617K +61.5% | 1.6M | $154M |
| Massachusetts Financial Services Co Active manager | +364K New position | 364K | $34.7M |
| Westfield Capital Management Co LP Active manager | +318K +101.7% | 631K | $60.1M |
| Braidwell LP Hedge fund | +278K New position | 278K | $26.5M |
| Polar Capital Holdings PLC Active manager | +181K +17.3% | 1.2M | $117M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Viking Global Investors LP Hedge fund | −1.2M −43.6% | 1.5M | $143M |
| Mercer Global Advisors Inc | −802K Sold out | 0 | — |
| Avidity Partners Management LP | −760K −50.0% | 760K | $72.4M |
| Sr One Capital Management, LP | −430K Sold out | 0 | — |
| Woodline Partners LP Hedge fund | −290K −50.4% | 285K | $27.1M |
| Ikarian Capital, LLC | −242K Sold out | 0 | — |
| Kalehua Capital Management LLC | −237K Sold out | 0 | — |
| Cable Car Capital, LP Hedge fund | −200K Sold out | 0 | — |
| Paradigm Biocapital Advisors LP | −176K −7.6% | 2.1M | $204M |
| Jones Hill Capital LP | −141K Sold out | 0 | — |
| Longaeva Partners L.P. | −137K Sold out | 0 | — |
| Atika Capital Management LLC | −130K −56.5% | 100K | $9.5M |
| Synergy Asset Management, LLC | −120K −25.2% | 356K | $33.9M |
| Deep Track Capital, LP Hedge fund | −108K −5.3% | 1.9M | $183M |
| Morgan Stanley | −99K −56.5% | 76K | $7.3M |
| Alyeska Investment Group, L.P. Hedge fund | −97K −52.5% | 88K | $8.4M |
| American Century Companies Inc Active manager | −69K −93.3% | 4,948 | $470,901 |
| Boothbay Fund Management, LLC Hedge fund | −67K Sold out | 0 | — |
| Goldman Sachs Group Inc | −67K −27.3% | 179K | $17.1M |
| Superstring Capital Management LP | −64K Sold out | 0 | — |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Viking Global Investors LP Hedge fund | −1.2M −43.6% | 1.5M | $143M |
| Woodline Partners LP Hedge fund | −290K −50.4% | 285K | $27.1M |
| Cable Car Capital, LP Hedge fund | −200K Sold out | 0 | — |
| Deep Track Capital, LP Hedge fund | −108K −5.3% | 1.9M | $183M |
| Alyeska Investment Group, L.P. Hedge fund | −97K −52.5% | 88K | $8.4M |
| American Century Companies Inc Active manager | −69K −93.3% | 4,948 | $470,901 |
| Boothbay Fund Management, LLC Hedge fund | −67K Sold out | 0 | — |
| Perceptive Advisors LLC Hedge fund | −50K −3.6% | 1.3M | $128M |
| Fred Alger Management, LLC Active manager | −44K Sold out | 0 | — |
| Voleon Capital Management LP Hedge fund | −37K −91.2% | 3,557 | $338,520 |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Capital World InvestorsActive manager | 3.4M | $324M |
| RA Capital Management, L.P.Hedge fund | 1.6M | $148M |
| T. Rowe Price Investment Management, Inc.Active manager | 1.1M | $105M |
| Summit Partners Public Asset Management, LLC | 658K | $62.7M |
| Pictet Asset Management Holding SA | 619K | $58.9M |
| Lord, Abbett & Co. LLC | 390K | $37.1M |
| Massachusetts Financial Services CoActive manager | 364K | $34.7M |
| Braidwell LPHedge fund | 278K | $26.5M |
| Siren, L.L.C. | 250K | $23.8M |
| Eventide Asset Management, LLC | 240K | $22.8M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Mercer Global Advisors Inc | 802K | $39.4M |
| Sr One Capital Management, LP | 430K | $21.1M |
| Ikarian Capital, LLC | 242K | $11.9M |
| Kalehua Capital Management LLC | 237K | $11.6M |
| Cable Car Capital, LPHedge fund | 200K | $9.8M |
| Jones Hill Capital LP | 141K | $6.9M |
| Longaeva Partners L.P. | 137K | $6.7M |
| Boothbay Fund Management, LLCHedge fund | 67K | $3.3M |
| Superstring Capital Management LP | 64K | $3.1M |
| Fred Alger Management, LLCActive manager | 44K | $2.2M |
Who holds the shares
- Institutions reporting
- 256
- Ten largest holders
- 50.6% of 13F-reported shares
- Index fund managers
- 18.0% of 13F-reported shares
- Active managers and hedge funds
- 43.5% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 38 | 19 | 21 | 6 | +9.6M | +42.2% |
| Index fund managers | 12 | 0 | 1 | 0 | +4.1M | +44.2% |
| Other institutions | 139 | 55 | 74 | 21 | +6.0M | +28.5% |