Who owns ORKA (ORKA)
Which tracked institutional funds hold ORKA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ORKA company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on ORKA is one-sided between 2025-Q4 and 2026-Q1: 101 added or opened and 15 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ORKA’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes ORKA more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ORKA divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 184 tracked filers holding ORKA, 127 increased or opened the position and 53 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ORKA between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 28
- VANGUARD CAPITAL MANAGEMENT LLC$91M
- Bellevue Group AG$25M
- VANGUARD PORTFOLIO MANAGEMENT LLC$17M
- WESTFIELD CAPITAL MANAGEMENT CO LP$15M
- VANGUARD FIDUCIARY TRUST CO$13M
- Ikarian Capital, LLC$12M
Full exits 11
- VANGUARD GROUP INC$66M
- Commodore Capital LP$53M
- Avoro Capital Advisors LLC$40M
- Blackstone Inc.$35M
- Point72 Asset Management, L.P.$18M
- BRAIDWELL LP$3M
Largest adds
- FMR LLC$143M
- Venrock Adviser, LLC$78M
- Fairmount Funds Management LLC$69M
- BlackRock, Inc.$66M
- Paradigm Biocapital Advisors LP$62M
- VIKING GLOBAL INVESTORS LP$50M
Largest trims
- Soleus Capital Management, L.P.$6M
- Cable Car Capital, LP$2M
- BARCLAYS PLC$1M
- WELLS FARGO & COMPANY/MN$584K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 7,410,908 | $364M | 13.1% | 2026-Q1 |
| Venrock Adviser, LLC | 4,148,428 | $203M | 7.3% | 2026-Q1 |
| Fairmount Funds Management LLC | 3,705,262 | $182M | 6.5% | 2026-Q1 |
| BlackRock, Inc. trimmed | 3,527,087 | $173M | 6.2% | 2026-Q1 |
| VIKING GLOBAL INVESTORS LP | 2,666,690 | $131M | 4.7% | 2026-Q1 |
| Paradigm Biocapital Advisors LP added | 2,320,316 | $114M | 4.1% | 2026-Q1 |
| RTW INVESTMENTS, LP | 2,058,148 | $101M | 3.6% | 2026-Q1 |
| Deep Track Capital, LP trimmed | 2,034,203 | $100M | 3.6% | 2026-Q1 |
| Remedium Capital Partners, LLC added | 1,889,115 | $93M | 3.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,859,631 | $91M | 3.3% | 2026-Q1 |
| STATE STREET CORP added | 1,613,461 | $79M | 2.8% | 2026-Q1 |
| PERCEPTIVE ADVISORS LLC trimmed | 1,395,501 | $68M | 2.5% | 2026-Q1 |
| Avidity Partners Management LP added | 760,424 | $52M | 1.9% | 2026-Q1 |
| Polar Capital Holdings Plc added | 1,047,693 | $51M | 1.8% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,007,537 | $49M | 1.8% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 1,004,056 | $49M | 1.8% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 954,867 | $47M | 1.7% | 2026-Q1 |
| MERCER GLOBAL ADVISORS INC /ADV added | 802,470 | $39M | 1.4% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 727,449 | $36M | 1.3% | 2026-Q1 |
| Woodline Partners LP added | 574,882 | $28M | 1.0% | 2026-Q1 |
| Cormorant Asset Management, LP | 533,340 | $26M | 0.9% | 2026-Q1 |
| Bellevue Group AG new | 507,008 | $25M | 0.9% | 2026-Q1 |
| Affinity Asset Advisors, LLC trimmed | 499,673 | $25M | 0.9% | 2026-Q1 |
| Synergy Asset Management, LLC added | 476,196 | $23M | 0.8% | 2026-Q1 |
| SR One Capital Management, LP | 430,330 | $21M | 0.8% | 2026-Q1 |
| Candriam S.C.A. added | 411,006 | $20M | 0.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 350,892 | $17M | 0.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 321,949 | $16M | 0.6% | 2026-Q1 |
| WESTFIELD CAPITAL MANAGEMENT CO LP new | 313,130 | $15M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 299,044 | $15M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 257,071 | $13M | 0.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 246,711 | $12M | 0.4% | 2026-Q1 |
| Ikarian Capital, LLC added | 242,021 | $12M | 0.4% | 2026-Q1 |
| Atika Capital Management LLC new | 229,900 | $11M | 0.4% | 2026-Q1 |
| UBS Group AG trimmed | 212,271 | $10M | 0.4% | 2026-Q1 |
| Cable Car Capital, LP trimmed | 200,000 | $10M | 0.4% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 190,030 | $9M | 0.3% | 2026-Q1 |
| Holocene Advisors, LP new | 185,513 | $9M | 0.3% | 2026-Q1 |
| Alyeska Investment Group, L.P. added | 184,863 | $9M | 0.3% | 2026-Q1 |
| GREAT POINT PARTNERS LLC | 183,330 | $9M | 0.3% | 2026-Q1 |
| JENNISON ASSOCIATES LLC new | 176,680 | $9M | 0.3% | 2026-Q1 |
| MORGAN STANLEY added | 175,454 | $9M | 0.3% | 2026-Q1 |
| PFM Health Sciences, LP new | 174,052 | $9M | 0.3% | 2026-Q1 |
| SILVERARC CAPITAL MANAGEMENT, LLC trimmed | 150,908 | $7M | 0.3% | 2026-Q1 |
| Jones Hill Capital LP new | 140,843 | $7M | 0.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 140,789 | $7M | 0.2% | 2026-Q1 |
| Longaeva Partners L.P. added | 136,884 | $7M | 0.2% | 2026-Q1 |
| Moody Aldrich Partners LLC added | 135,061 | $7M | 0.2% | 2026-Q1 |
| Sio Capital Management, LLC added | 132,496 | $6M | 0.2% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 126,366 | $6M | 0.2% | 2026-Q1 |
| Kalehua Capital Management LLC | 118,524 | $6M | 0.2% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 114,351 | $6M | 0.2% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP new | 113,009 | $6M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 106,883 | $5M | 0.2% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 101,354 | $5M | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 100,091 | $5M | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 97,042 | $5M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 86,938 | $4M | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 85,737 | $4M | 0.2% | 2026-Q1 |
| Ensign Peak Advisors, Inc added | 79,380 | $4M | 0.1% | 2026-Q1 |
| HighVista Strategies LLC new | 78,911 | $4M | 0.1% | 2026-Q1 |
| TD Asset Management Inc trimmed | 75,696 | $4M | 0.1% | 2026-Q1 |
| Aberdeen Group plc | 75,680 | $4M | 0.1% | 2026-Q1 |
| B Group, Inc. | 75,000 | $4M | 0.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 74,386 | $4M | 0.1% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 72,563 | $4M | 0.1% | 2026-Q1 |
| Secure Asset Management, LLC trimmed | 72,422 | $4M | 0.1% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 67,481 | $3M | 0.1% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC added | 66,600 | $3M | 0.1% | 2026-Q1 |
| SUPERSTRING CAPITAL MANAGEMENT LP new | 63,591 | $3M | 0.1% | 2026-Q1 |
| Palo Alto Investors LP | 59,985 | $3M | 0.1% | 2026-Q1 |
| Informed Momentum Co LLC new | 59,946 | $3M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 46,356 | $2M | 0.1% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 45,459 | $2M | 0.1% | 2026-Q1 |
| FRED ALGER MANAGEMENT, LLC new | 43,841 | $2M | 0.1% | 2026-Q1 |
| Swiss National Bank | 43,000 | $2M | 0.1% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P new | 42,732 | $2M | 0.1% | 2026-Q1 |
| Voleon Capital Management LP added | 40,539 | $2M | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC added | 40,487 | $2M | 0.1% | 2026-Q1 |
| ALPS ADVISORS INC trimmed | 39,404 | $2M | 0.1% | 2026-Q1 |
| Y-Intercept (Hong Kong) Ltd new | 36,912 | $2M | 0.1% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 29,184 | $1M | 0.0% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 40,400 | $1M | 0.0% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 24,463 | $1M | 0.0% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 23,667 | $1M | 0.0% | 2026-Q1 |
| SEI INVESTMENTS CO added | 22,840 | $1M | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 2,162,345 | $66M | 2.4% | 2025-Q4 stale |
| Commodore Capital LP | 1,753,054 | $53M | 1.9% | 2025-Q4 stale |
| Avoro Capital Advisors LLC | 1,333,340 | $40M | 1.5% | 2025-Q4 stale |
| Blackstone Inc. added | 1,165,408 | $35M | 1.3% | 2025-Q4 stale |
| Point72 Asset Management, L.P. trimmed | 600,000 | $18M | 0.7% | 2025-Q4 stale |
| Frazier Life Sciences Management, L.P. | 583,327 | $7M | 0.2% | 2025-Q2 stale |
| Redmile Group, LLC trimmed | 386,963 | $4M | 0.1% | 2025-Q1 stale |
| BRAIDWELL LP trimmed | 84,795 | $3M | 0.1% | 2025-Q4 stale |
| D. E. Shaw & Co., Inc. trimmed | 76,415 | $2M | 0.1% | 2025-Q4 stale |
| MILLENNIUM MANAGEMENT LLC added | 58,723 | $2M | 0.1% | 2025-Q4 stale |
| Jefferies Financial Group Inc. | 64,991 | $1M | 0.0% | 2025-Q3 stale |
| TORONTO DOMINION BANK | 58,332 | $1M | 0.0% | 2025-Q3 stale |
| Verition Fund Management LLC new | 35,710 | $1M | 0.0% | 2025-Q4 stale |
| Financial Enhancement Group LLC trimmed | 31,293 | $1M | 0.0% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.