ORUKA THERAPEUTICS INC (ORKA) Institutional Ownership Changes & 13F Activity
ORUKA THERAPEUTICS INC (ORKA). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Ra Capital Management, L.P., Viking Global Investors, Bellevue Group Ag, T. Rowe Price Investment Management, Inc., and Rtw Investments, Lp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Sell | -4,142 | -5.7% | 68,421 | $6.51M | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Buy | +111,474 | +11.1% | 1,119,011 | $106.50M | Q2 2026 | Sep 02, 2026 |
| Allianz Asset Management Gmbh | Buy | +4,900 | +69.0% | 12,000 | $1.14M | Q2 2026 | Sep 02, 2026 |
| Optimize Financial Inc | Sell | -46 | -0.3% | 13,396 | $1.27M | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Buy | +14,650 | +68.6% | 36,020 | $3.43M | Q2 2026 | Aug 24, 2026 |
| Palo Alto Investors Lp | Sell | -26,439 | -44.1% | 33,546 | $3.19M | Q2 2026 | Aug 19, 2026 |
| Stonepine Capital Management, Llc | Buy | +7,500 | — | 7,500 | $713.77K | Q2 2026 | Aug 17, 2026 |
| Ra Capital Management, L.P. | Buy | +1,554,597 | — | 1,554,597 | $147.95M | Q2 2026 | Aug 14, 2026 |
| Viking Global Investors | Sell | -1,163,212 | -43.6% | 1,503,478 | $143.09M | Q2 2026 | Aug 14, 2026 |
| Bellevue Group Ag | Buy | +1,150,182 | +226.9% | 1,657,190 | $157.71M | Q2 2026 | Aug 14, 2026 |
| T. Rowe Price Investment Management, Inc. | Buy | +1,103,743 | — | 1,103,743 | $105.04M | Q2 2026 | Aug 14, 2026 |
| Rtw Investments, Lp | Buy | +1,080,882 | +52.5% | 3,139,030 | $298.74M | Q2 2026 | Aug 14, 2026 |
| Summit Partners Public Asset Management, Llc | Buy | +658,301 | — | 658,301 | $62.65M | Q2 2026 | Aug 14, 2026 |
| Lord, Abbett & Co. Llc | Buy | +390,064 | — | 390,064 | $37.12M | Q2 2026 | Aug 14, 2026 |
| Woodline Partners Lp | Sell | -289,635 | -50.4% | 285,247 | $27.15M | Q2 2026 | Aug 14, 2026 |
| Braidwell Lp | Buy | +278,164 | — | 278,164 | $26.47M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Buy | +252,733 | +252.5% | 352,824 | $33.58M | Q2 2026 | Aug 14, 2026 |
| Eventide Asset Management, Llc | Buy | +240,000 | — | 240,000 | $22.84M | Q2 2026 | Aug 14, 2026 |
| Blackstone Inc. | Buy | +237,108 | — | 237,108 | $22.57M | Q2 2026 | Aug 14, 2026 |
| Nomura Asset Management International Inc. | Buy | +219,039 | — | 219,039 | $20.85M | Q2 2026 | Aug 14, 2026 |
| Polar Capital Holdings Plc | Buy | +180,916 | +17.3% | 1,228,609 | $116.93M | Q2 2026 | Aug 14, 2026 |
| Paradigm Biocapital Advisors Lp | Sell | -175,790 | -7.6% | 2,144,526 | $204.09M | Q2 2026 | Aug 14, 2026 |
| Adage Capital Partners Gp, L.L.C. | Buy | +164,973 | +86.8% | 355,003 | $33.79M | Q2 2026 | Aug 14, 2026 |
| First Turn Management, Llc | Buy | +155,343 | — | 155,343 | $14.78M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +124,658 | — | 124,658 | $11.86M | Q2 2026 | Aug 14, 2026 |
| Holocene Advisors, Lp | Buy | +120,438 | +64.9% | 305,951 | $29.12M | Q2 2026 | Aug 14, 2026 |
| Stempoint Capital Lp | Buy | +116,461 | — | 116,461 | $11.08M | Q2 2026 | Aug 14, 2026 |
| Parkman Healthcare Partners Llc | Buy | +113,188 | — | 113,188 | $10.77M | Q2 2026 | Aug 14, 2026 |
| Apis Capital Advisors, Llc | Buy | +112,000 | — | 112,000 | $10.66M | Q2 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Buy | +111,456 | +34.6% | 433,405 | $41.25M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about ORKA activity
Which institutional owners are buying ORKA?
Institutional owners buying ORKA include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in ORKA activity?
"Buy" means an investor increased their reported position in ORKA compared to the prior reporting period. This reflects growing exposure to ORUKA THERAPEUTICS INC (ORKA) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in ORKA increasing?
Institutional interest in ORKA can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.