Oruka Therapeutics, Inc. (ORKA) Ownership
ORKA ownership summary
as of October 18, 2026- Institutions
- 116.6% of shares outstanding
- Insiders
- 1.25% of shares outstanding
- Shares outstanding
- 66.2M
- Float
- 56.9M shares available to trade
- Short interest
- 17.10% 7.8M shares short
- Days to cover
- 7.87 short interest up 2.0% vs prior month
- Institutions 116.60%
- Insiders 1.25%
ORKA top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | FMR Inc | 13.68% | 9.1M | $651.5M | +1.6M (+21.9%) | June 30, 2026 |
| 2 | BlackRock Inc | 7.54% | 5.0M | $358.9M | +1.5M (+41.5%) | June 30, 2026 |
| 3 | VR Adviser, LLC | 6.27% | 4.1M | $298.4M | — | June 30, 2026 |
| 4 | Fairmount Funds Management LLC | 5.60% | 3.7M | $266.5M | — | June 30, 2026 |
| 5 | Capital World Investors | 5.14% | 3.4M | $244.7M | +3.4M (0.0%) | June 30, 2026 |
| 6 | RTW INVESTMENTS, LLC | 4.74% | 3.1M | $225.8M | +1.1M (+52.5%) | June 30, 2026 |
| 7 | State Street Corp | 4.04% | 2.7M | $192.3M | +1.1M (+65.7%) | June 30, 2026 |
| 8 | Vanguard Capital Management, LLC | 3.57% | 2.4M | $169.8M | +501,340 (+27.0%) | June 30, 2026 |
| 9 | Paradigm Biocapital Advisors LP | 3.24% | 2.1M | $154.3M | −175,790 (−7.6%) | June 30, 2026 |
| 10 | Deep Track Capital, LP | 2.91% | 1.9M | $138.5M | −108,203 (−5.3%) | June 30, 2026 |
| 11 | Bellevue Group AG | 2.50% | 1.7M | $119.2M | +1.2M (+226.9%) | June 30, 2026 |
| 12 | Franklin Templeton Inc | 2.45% | 1.6M | $116.6M | +617,395 (+61.5%) | June 30, 2026 |
| 13 | Remedium Capital Partners, LLC | 2.36% | 1.6M | $112.6M | — | June 30, 2026 |
| 14 | RA Capital Management, LLC | 2.35% | 1.6M | $111.8M | +1.6M (0.0%) | June 30, 2026 |
| 15 | Viking Global Investors LP | 2.27% | 1.5M | $108.1M | −1.2M (−43.6%) | June 30, 2026 |
| 16 | Geode Capital Management, LLC | 2.16% | 1.4M | $102.9M | +475,087 (+49.8%) | June 30, 2026 |
| 17 | Jupiter Topco LLC | 2.08% | 1.4M | $99.0M | +1.4M (0.0%) | June 30, 2026 |
| 18 | Perceptive Advisors LLC | 2.03% | 1.3M | $96.8M | −50,438 (−3.6%) | June 30, 2026 |
| 19 | Polar Capital Holdings PLC | 1.86% | 1.2M | $88.4M | +180,916 (+17.3%) | June 30, 2026 |
| 20 | Citadel Advisors Llc | 1.69% | 1.1M | $80.5M | +111,474 (+11.1%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 14.6M shares and 4 cut 1.5M.
ORKA top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.61% | 1.7M | $124.3M | −2,176 (−0.1%) | August 31, 2026 |
| 2 | State Street® SPDR® S&P® Biotech ETF | 2.46% | 1.6M | $116.9M | −30,950 (−1.9%) | September 30, 2026 |
| 3 | American Funds SMALLCAP World A | 2.31% | 1.5M | $109.9M | +1.5M (0.0%) | June 30, 2026 |
| 4 | American Funds New Economy A | 2.00% | 1.3M | $95.2M | +1.3M (0.0%) | June 30, 2026 |
| 5 | iShares Russell 2000 ETF | 1.97% | 1.3M | $93.9M | −15,040 (−1.1%) | September 30, 2026 |
| 6 | Fidelity Growth Company Fund | 1.95% | 1.3M | $93.1M | — | August 31, 2026 |
| 7 | Polar Capital Biotech S Inc | 1.76% | 1.2M | $83.7M | — | August 31, 2026 |
| 8 | Fidelity Select Health Care | 1.33% | 880K | $63.3M | +15,000 (+1.7%) | August 31, 2026 |
| 9 | Fidelity Advisor Biotechnology I | 1.11% | 737K | $53.0M | — | August 31, 2026 |
| 10 | Fidelity Small Cap Growth | 1.04% | 686K | $49.3M | — | July 31, 2026 |
| 11 | Fidelity Select Biotechnology | 0.85% | 563K | $40.5M | — | August 31, 2026 |
| 12 | Fidelity Small Cap Index | 0.83% | 551K | $39.6M | +4,639 (+0.8%) | July 31, 2026 |
| 13 | Franklin Biotechnology Discv A(acc)USD | 0.83% | 548K | $39.4M | — | August 31, 2026 |
| 14 | iShares Russell 2000 Growth ETF | 0.71% | 471K | $33.9M | −597 (−0.1%) | September 30, 2026 |
| 15 | iShares Biotechnology ETF | 0.69% | 459K | $33.0M | −3,480 (−0.8%) | September 30, 2026 |
| 16 | Fidelity Advisor Health Care I | 0.65% | 428K | $30.8M | — | August 31, 2026 |
| 17 | Candriam Eqs L Biotech C USD Cap | 0.60% | 401K | $28.8M | — | March 31, 2026 |
| 18 | RTW Biotech Opportunities Ord | 0.58% | 386K | $27.7M | +385,571 (0.0%) | December 31, 2025 |
| 19 | Fidelity Growth Company K6 | 0.57% | 379K | $27.2M | — | August 31, 2026 |
| 20 | Pictet-Biotech P USD | 0.56% | 374K | $26.9M | −1,516 (−0.4%) | June 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ORKA insider transactions
latest 7| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-15 | Joana Goncalves | Sell | $66.12 | 7,000 | $462,840 |
| 2026-03-16 | Arjun Agarwal | Sell | $41.30 | 395 | $16,313 |
| 2026-03-16 | Joana Goncalves | Sell | $40.91 | 7,641 | $312,593 |
| 2026-03-16 | Lawrence Otto Klein | Sell | $41.30 | 1,729 | $71,408 |
| 2026-02-17 | Joana Goncalves | Sell | $32.37 | 7,000 | $226,590 |
| 2026-01-15 | Joana Goncalves | Sell | $31.81 | 7,000 | $222,670 |
| 2025-12-19 | Joana Goncalves | Sell | $30.61 | 7,000 | $214,270 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ORKA shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ORKA
Institutional investors own 116.6% of Oruka Therapeutics's shares and insiders 1.25%. The largest holder is FMR Inc with 13.68% of the shares (9.1M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 4 reduced their stake in the latest filings. Short interest is 17.10% of the float, or 7.87 days of average trading volume. The share count rose 99,753.2% since 2017.
Related: ORKA analyst forecast, ORKA key metrics. See the ORKA stock overview for the latest quote and news.
ORKA ownership FAQ
Who owns the most Oruka Therapeutics stock?
The largest shareholders of Oruka Therapeutics are FMR Inc (13.68%), BlackRock Inc (7.54%), VR Adviser, LLC (6.27%), Fairmount Funds Management LLC (5.60%), Capital World Investors (5.14%).
What percentage of Oruka Therapeutics is owned by institutions?
Institutions hold 116.6% of Oruka Therapeutics's shares outstanding; insiders hold 1.25%.
Which funds own Oruka Therapeutics?
The largest fund holders of Oruka Therapeutics are Vanguard MStar Total Stk Mkt Idx Invest (2.61%), State Street® SPDR® S&P® Biotech ETF (2.46%), American Funds SMALLCAP World A (2.31%), American Funds New Economy A (2.00%), iShares Russell 2000 ETF (1.97%).
What is Oruka Therapeutics's short interest?
7.8M shares of Oruka Therapeutics were sold short, 17.10% of the float; at the average daily volume it would take 7.87 days to cover.
Are insiders buying or selling Oruka Therapeutics?
Of the latest 7 reported insider transactions in Oruka Therapeutics (since December 19, 2025), 0 were purchases and 7 were sales.
How many shares of Oruka Therapeutics are outstanding?
Oruka Therapeutics has 66.2M shares outstanding, of which 56.9M are in the public float.