ORKA · Oruka Therapeutics, Inc. · Shareholders & Ownership
Every disclosed holder of ORKA in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns ORKA
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 74,133,140 | 111.97% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 4,556,952 | 6.88% |
| Remaining | 12,480,393 | -18.85% |
| Registered funds (N-PORT, not summed) | 24,429,772 | 36.90% |
Shares outstanding: 66,209,699, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of ORKA
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Fairmount Funds Management LLC
13D
CIK 1802528 · Registered investment adviser · Jul 1, 2026
not summed
|
14,553,895 | ||
| 1.1 |
Fairmount Funds Management LLC
13F
CIK 1802528 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,705,262 | ||
| 1.2 |
|
2,573,308 | ||
| 2 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
9,057,645 | ||
| 2.1 |
Fidelity Growth Company Fund
Fund
S000007119 · Registered fund · May 31, 2026
Fidelity Mt. Vernon Street Trust, not summed
|
1,221,046 | ||
| 2.2 |
Select Health Care Portfolio
Fund
S000007466 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
|
833,100 | ||
| 2.3 |
Fidelity Advisor Biotechnology Fund
Fund
S000005321 · Registered fund · Jul 31, 2026
Fidelity Advisor Series VII, not summed
|
737,386 | ||
| 2.4 |
Fidelity Small Cap Growth Fund
Fund
S000007193 · Registered fund · Jul 31, 2026
Fidelity Securities Fund, not summed
|
685,718 | ||
| 2.5 |
Select Biotechnology Portfolio
Fund
S000007486 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
|
562,683 | ||
| 3 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,990,181 | ||
| 3.1 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,300,202 | ||
| 3.2 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
449,195 | ||
| 3.3 |
iShares Biotechnology ETF
Fund
S000004350 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
359,218 | ||
| 3.4 |
BlackRock Health Sciences Opportunities Portfolio
Fund
S000001877 · Registered fund · May 29, 2026
BlackRock Funds, not summed
|
264,813 | ||
| 3.5 |
Master Small Cap Index Series
Fund
S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
|
92,609 | ||
| 4 |
Venrock Healthcare Capital Partners III, L.P.
13G
CIK 1738048 · Unknown · Jun 30, 2026
Rule 13d-1(c), passive investor
|
4,556,952 | ||
| 4.1 |
Venrock Healthcare Capital Partners III, L.P.
Insider
CIK 1738048 · Feb 14, 2025
10% Owner, issuer-wide, not summed
|
4,148,428 | ||
| 5 |
Venrock Adviser, LLC
13F
CIK 1615982 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,148,428 | ||
| 6 |
Capital World Investors
13F
CIK 1422849 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,401,639 | ||
| 6.1 |
Capital World Investors
13G
CIK 1422849 · Investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
3,401,639 | ||
| 7 |
RTW INVESTMENTS, LP
13F
CIK 1493215 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,139,030 | ||
| 7.1 |
RTW INVESTMENTS, LP
13G
CIK 1493215 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
3,139,030 | ||
| 8 |
|
2,673,090 | ||
| 8.1 |
State Street(R) SPDR(R) S&P(R) Biotech ETF
Fund
S000010018 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
1,555,002 | ||
| 8.2 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
16,600 | ||
| 8.3 |
State Street Institutional Small-Cap Equity Fund
Fund
S000001631 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL FUNDS, not summed
|
4,960 | ||
| 8.4 |
State Street Total Return V.I.S. Fund
Fund
S000001637 · Registered fund · Jun 30, 2026
STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
|
1,235 | ||
| 8.5 |
State Street Balanced Index Fund
Fund
S000082802 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
276 | ||
| 9 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,360,971 | ||
| 10 |
Paradigm Biocapital Advisors LP
13F
CIK 1855655 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,144,526 | ||
| 11 |
Deep Track Capital, LP
13F
CIK 1856083 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,926,000 | ||
| 12 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,724,692 | ||
| 13 |
Bellevue Group AG
13F
CIK 1674546 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,657,190 | ||
| 14 |
FRANKLIN RESOURCES INC
13F
CIK 38777 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,621,451 | ||
| 14.1 |
Franklin Biotechnology Discovery Fund
Fund
S000006882 · Registered fund · Jul 31, 2026
Franklin Strategic Series, not summed
|
296,262 | ||
| 14.2 |
Putnam Small Cap Growth Fund
Fund
S000000777 · Registered fund · Jun 30, 2026
Putnam Funds Trust, not summed
|
255,628 | ||
| 14.3 |
Franklin Small Cap Growth Fund
Fund
S000006889 · Registered fund · Jul 31, 2026
Franklin Strategic Series, not summed
|
208,013 | ||
| 14.4 |
Franklin Alternative Strategies Fund
Fund
S000042023 · Registered fund · May 29, 2026
Franklin Alternative Strategies Funds, not summed
|
9,388 | ||
| 14.5 |
Putnam VT Small Cap Growth Fund
Fund
S000003883 · Registered fund · Jun 30, 2026
Putnam Variable Trust, not summed
|
3,920 | ||
| 15 |
Remedium Capital Partners, LLC
13F
CIK 2104501 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,565,661 | ||
| 16 |
RA CAPITAL MANAGEMENT, L.P.
13F
CIK 1346824 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,554,597 | ||
| 17 |
SMALLCAP World Fund Inc
Fund
S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
|
1,527,592 | ||
| 18 |
VIKING GLOBAL INVESTORS LP
13F
CIK 1103804 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,503,478 | ||
| 18.1 |
VIKING GLOBAL INVESTORS LP
13G
CIK 1103804 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(c), passive investor, not summed
|
1,503,478 | ||
| 19 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,429,954 | ||
| 20 |
Jupiter Topco LLC
13F
CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,375,844 | ||
| 20.1 |
Janus Henderson Small/Mid Cap Growth Alpha ETF
Fund
S000052564 · Registered fund · Jul 31, 2026
Janus Detroit Street Trust, not summed
|
82,097 | ||
| 20.2 |
Janus Henderson Small Cap Growth Alpha ETF
Fund
S000052563 · Registered fund · Jul 31, 2026
Janus Detroit Street Trust, not summed
|
28,596 | ||
| 21 |
PERCEPTIVE ADVISORS LLC
13F
CIK 1224962 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,345,063 | ||
| 22 |
Polar Capital Holdings Plc
13F
CIK 1837309 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,228,609 | ||
| 23 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,119,011 | ||
| 24 |
T. Rowe Price Investment Management, Inc.
13F
CIK 1897612 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,103,743 | ||
| 25 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,079,015 | ||
| 26 |
|
923,128 | ||
| 27 |
PRICE T ROWE ASSOCIATES INC /MD/
13F
CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
838,603 | ||
| 27.1 |
T. Rowe Price Health Sciences Fund, Inc.
Fund
S000002088 · Registered fund · Jun 30, 2026
T. ROWE PRICE HEALTH SCIENCES FUND, INC., not summed
|
451,118 | ||
| 27.2 |
T. Rowe Price Small-Cap Stock Fund, Inc.
Fund
S000002120 · Registered fund · Jun 30, 2026
T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed
|
381,128 | ||
| 27.3 |
T. Rowe Price Institutional Small-Cap Stock Fund
Fund
S000002094 · Registered fund · Jun 30, 2026
T. Rowe Price Equity Funds, Inc., not summed
|
205,065 | ||
| 27.4 |
T. Rowe Price Integrated U.S. Small-Cap Growth Equity Fund
Fund
S000002074 · Registered fund · Jun 30, 2026
T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
|
150,800 | ||
| 27.5 |
T. Rowe Price Health Sciences Portfolio
Fund
S000002083 · Registered fund · Jun 30, 2026
T. ROWE PRICE EQUITY SERIES, INC., not summed
|
28,926 | ||
| 28 |
Avidity Partners Management LP
13F
CIK 1791827 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
760,424 | ||
| 29 |
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC
13F
CIK 1638555 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
658,301 | ||
| 30 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
655,027 | ||
| 31 |
Aberdeen Group plc
13F
CIK 1716774 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
646,943 | ||
| 32 |
|
639,363 | ||
| 33 |
WESTFIELD CAPITAL MANAGEMENT CO LP
13F
CIK 1177719 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
631,433 | ||
| 34 |
Pictet Asset Management Holding SA
13F
CIK 1993888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
619,076 | ||
| 35 |
Affinity Asset Advisors, LLC
13F
CIK 1773195 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
590,000 | ||
| 36 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
582,409 | ||
| 37 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
580,953 | ||
| 38 |
Cormorant Asset Management, LP
13F
CIK 1583977 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
533,340 | ||
| 39 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
433,405 | ||
| 40 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
428,891 | ||
| 41 |
VOYA INVESTMENT MANAGEMENT LLC
13F
CIK 1068837 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
401,149 | ||
| 42 |
LORD, ABBETT & CO. LLC
13F
CIK 728100 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
390,064 | ||
| 42.1 |
LORD ABBETT DEVELOPING GROWTH FUND INC
Fund
S000006834 · Registered fund · Jul 31, 2026
LORD ABBETT DEVELOPING GROWTH FUND, INC., not summed
|
225,118 | ||
| 42.2 |
Lord Abbett Micro-Cap Growth Fund
Fund
S000007142 · Registered fund · Jul 31, 2026
LORD ABBETT SECURITIES TRUST, not summed
|
25,176 | ||
| 42.3 |
Developing Growth Portfolio
Fund
S000028719 · Registered fund · Jun 30, 2026
LORD ABBETT SERIES FUND INC, not summed
|
6,624 | ||
| 42.4 |
Lord Abbett Health Care Fund
Fund
S000064462 · Registered fund · Jul 31, 2026
LORD ABBETT SECURITIES TRUST, not summed
|
828 | ||
| 43 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
365,630 | ||
| 44 |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
13F
CIK 912938 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
364,102 | ||
| 44.1 |
MFS New Discovery Value Fund
Fund
S000032712 · Registered fund · May 31, 2026
MFS SERIES TRUST XIII, not summed
|
122,006 | ||
| 44.2 |
MFS New Discovery Fund
Fund
S000000765 · Registered fund · May 31, 2026
MFS SERIES TRUST I, not summed
|
121,469 | ||
| 44.3 |
MFS New Discovery Series
Fund
S000002680 · Registered fund · Jun 30, 2026
MFS VARIABLE INSURANCE TRUST, not summed
|
44,125 | ||
| 44.4 |
MFS Blended Research Small Cap Equity Fund
Fund
S000050659 · Registered fund · May 31, 2026
MFS SERIES TRUST X, not summed
|
11,938 | ||
| 44.5 |
MFS Blended Research Small Cap Equity Portfolio
Fund
S000008071 · Registered fund · Jun 30, 2026
MFS VARIABLE INSURANCE TRUST III, not summed
|
3,008 | ||
| 45 |
Synergy Asset Management, LLC
13F
CIK 1699080 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
356,301 | ||
| 46 |
ADAGE CAPITAL PARTNERS GP, L.L.C.
13F
CIK 1165408 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
355,003 | ||
| 47 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
352,824 | ||
| 48 |
SILVERARC CAPITAL MANAGEMENT, LLC
13F
CIK 1816307 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
352,802 | ||
| 49 |
Candriam S.C.A.
13F
CIK 1537014 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
352,716 | ||
| 50 |
Harbor Small Cap Growth Fund
Fund
S000000686 · Registered fund · Jul 31, 2026
HARBOR FUNDS, not summed
|
316,518 |
62 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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