Who owns Immunome, Inc. (IMNM)
Which tracked institutional funds hold IMNM, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See IMNM company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 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
67 tracked funds added or opened IMNM while 41 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
IMNM’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 conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in IMNM 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 200 tracked filers holding IMNM, 124 increased or opened the position and 77 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 IMNM 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 19
- VANGUARD CAPITAL MANAGEMENT LLC$97M
- VANGUARD PORTFOLIO MANAGEMENT LLC$22M
- VANGUARD FIDUCIARY TRUST CO$16M
- Tidal Investments LLC$6M
- Qube Research & Technologies Ltd$4M
- Sio Capital Management, LLC$4M
Full exits 14
- Point72 Asset Management, L.P.$151M
- VANGUARD GROUP INC$112M
- EcoR1 Capital, LLC$61M
- Alyeska Investment Group, L.P.$6M
- Monashee Investment Management LLC$6M
- Neo Ivy Capital Management$4M
Largest adds
- T. Rowe Price Investment Management, Inc.$332M
- WELLINGTON MANAGEMENT GROUP LLP$82M
- STATE STREET CORP$35M
- MORGAN STANLEY$25M
- BNP PARIBAS ASSET MANAGEMENT Holding S.A.$20M
- MARSHALL WACE, LLP$17M
Largest trims
- CITADEL ADVISORS LLC$36M
- BALYASNY ASSET MANAGEMENT L.P.$25M
- ENAVATE SCIENCES GP, LLC$23M
- Jefferies Financial Group Inc.$18M
- ExodusPoint Capital Management, LP$14M
- READYSTATE ASSET MANAGEMENT LP$11M
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 | 16,958,854 | $371M | 12.7% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 16,364,011 | $358M | 12.3% | 2026-Q1 |
| BlackRock, Inc. added | 8,168,674 | $179M | 6.1% | 2026-Q1 |
| Redmile Group, LLC trimmed | 5,558,885 | $122M | 4.2% | 2026-Q1 |
| STATE STREET CORP added | 5,399,901 | $118M | 4.1% | 2026-Q1 |
| PRIMECAP MANAGEMENT CO/CA/ added | 4,788,231 | $105M | 3.6% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 4,663,910 | $102M | 3.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 4,429,697 | $97M | 3.3% | 2026-Q1 |
| Driehaus Capital Management LLC added | 4,099,901 | $90M | 3.1% | 2026-Q1 |
| ENAVATE SCIENCES GP, LLC trimmed | 3,613,799 | $79M | 2.7% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 2,858,863 | $63M | 2.1% | 2026-Q1 |
| MORGAN STANLEY added | 2,841,589 | $62M | 2.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,560,664 | $56M | 1.9% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 2,777,836 | $54M | 1.8% | 2026-Q1 |
| SILVERARC CAPITAL MANAGEMENT, LLC added | 1,850,278 | $40M | 1.4% | 2026-Q1 |
| Sofinnova Investments, Inc. added | 1,701,904 | $37M | 1.3% | 2026-Q1 |
| Woodline Partners LP | 1,575,398 | $34M | 1.2% | 2026-Q1 |
| MARSHALL WACE, LLP added | 1,480,788 | $32M | 1.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 1,376,867 | $30M | 1.0% | 2026-Q1 |
| READYSTATE ASSET MANAGEMENT LP trimmed | 1,301,862 | $28M | 1.0% | 2026-Q1 |
| Jefferies Financial Group Inc. trimmed | 1,160,715 | $25M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,101,476 | $24M | 0.8% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 1,097,836 | $24M | 0.8% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,006,975 | $22M | 0.8% | 2026-Q1 |
| NORTHERN TRUST CORP added | 899,146 | $20M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 851,789 | $19M | 0.6% | 2026-Q1 |
| Polar Capital Holdings Plc added | 849,479 | $19M | 0.6% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 808,019 | $18M | 0.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 781,607 | $17M | 0.6% | 2026-Q1 |
| Pivotal bioVenture Partners Investment Advisor LLC | 732,512 | $16M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 716,395 | $16M | 0.5% | 2026-Q1 |
| NAN FUNG TRINITY (HK) LTD | 714,553 | $16M | 0.5% | 2026-Q1 |
| TD Asset Management Inc trimmed | 694,934 | $15M | 0.5% | 2026-Q1 |
| Candriam S.C.A. | 539,882 | $12M | 0.4% | 2026-Q1 |
| UBS Group AG added | 432,912 | $9M | 0.3% | 2026-Q1 |
| Parkman Healthcare Partners LLC added | 403,487 | $9M | 0.3% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 362,621 | $8M | 0.3% | 2026-Q1 |
| Rock Springs Capital Management LP | 347,666 | $8M | 0.3% | 2026-Q1 |
| Granahan Investment Management, LLC trimmed | 307,021 | $7M | 0.2% | 2026-Q1 |
| Atom Investors LP added | 306,880 | $7M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 305,254 | $7M | 0.2% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 287,030 | $6M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp added | 276,066 | $6M | 0.2% | 2026-Q1 |
| Tidal Investments LLC new | 275,896 | $6M | 0.2% | 2026-Q1 |
| Tema ETFs LLC added | 275,896 | $6M | 0.2% | 2026-Q1 |
| Atika Capital Management LLC trimmed | 262,900 | $6M | 0.2% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 251,396 | $5M | 0.2% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 230,738 | $5M | 0.2% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 206,799 | $5M | 0.2% | 2026-Q1 |
| Burkehill Global Management, LP | 200,000 | $4M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 188,229 | $4M | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 187,011 | $4M | 0.1% | 2026-Q1 |
| Swiss National Bank | 185,000 | $4M | 0.1% | 2026-Q1 |
| GILDER GAGNON HOWE & CO LLC trimmed | 169,267 | $4M | 0.1% | 2026-Q1 |
| Trexquant Investment LP added | 166,812 | $4M | 0.1% | 2026-Q1 |
| Sio Capital Management, LLC new | 165,110 | $4M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 163,450 | $4M | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC added | 156,220 | $3M | 0.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 130,367 | $3M | 0.1% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 129,515 | $3M | 0.1% | 2026-Q1 |
| Aristotle Atlantic Partners, LLC new | 125,018 | $3M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 120,900 | $3M | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP trimmed | 115,370 | $3M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 111,444 | $2M | 0.1% | 2026-Q1 |
| Walleye Capital LLC added | 111,183 | $2M | 0.1% | 2026-Q1 |
| LMR Partners LLP added | 101,401 | $2M | 0.1% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 97,140 | $2M | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 96,374 | $2M | 0.1% | 2026-Q1 |
| SummitTX Capital, L.P. trimmed | 92,880 | $2M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 89,137 | $2M | 0.1% | 2026-Q1 |
| Cerity Partners LLC added | 83,581 | $2M | 0.1% | 2026-Q1 |
| Legal & General Group Plc trimmed | 81,588 | $2M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 80,197 | $2M | 0.1% | 2026-Q1 |
| Informed Momentum Co LLC trimmed | 71,757 | $2M | 0.1% | 2026-Q1 |
| PROFUND ADVISORS LLC added | 69,918 | $2M | 0.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 68,902 | $2M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 67,778 | $1M | 0.1% | 2026-Q1 |
| Invesco Ltd. trimmed | 66,565 | $1M | 0.0% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC added | 62,436 | $1M | 0.0% | 2026-Q1 |
| Freestone Capital Holdings, LLC trimmed | 61,514 | $1M | 0.0% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 7,034,952 | $151M | 5.2% | 2025-Q4 stale |
| VANGUARD GROUP INC added | 5,214,276 | $112M | 3.8% | 2025-Q4 stale |
| EcoR1 Capital, LLC trimmed | 2,855,590 | $61M | 2.1% | 2025-Q4 stale |
| Opaleye Management Inc. trimmed | 3,185,000 | $37M | 1.3% | 2025-Q3 stale |
| TORONTO DOMINION BANK trimmed | 1,036,056 | $12M | 0.4% | 2025-Q3 stale |
| Alyeska Investment Group, L.P. new | 293,750 | $6M | 0.2% | 2025-Q4 stale |
| Monashee Investment Management LLC added | 274,861 | $6M | 0.2% | 2025-Q4 stale |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 775,000 | $5M | 0.2% | 2025-Q1 stale |
| Neo Ivy Capital Management new | 192,635 | $4M | 0.1% | 2025-Q4 stale |
| NEOS Investment Management LLC trimmed | 103,585 | $2M | 0.1% | 2025-Q4 stale |
| Longaeva Partners L.P. new | 102,500 | $2M | 0.1% | 2025-Q4 stale |
| NATIXIS added | 229,305 | $2M | 0.1% | 2025-Q2 stale |
| AXA Investment Managers S.A. new | 180,056 | $2M | 0.1% | 2025-Q3 stale |
| Handelsbanken Fonder AB trimmed | 180,000 | $2M | 0.1% | 2025-Q3 stale |
| SCHRODER INVESTMENT MANAGEMENT GROUP new | 263,867 | $2M | 0.1% | 2025-Q1 stale |
| Exome Asset Management LLC new | 263,841 | $2M | 0.1% | 2025-Q1 stale |
| SPHERA FUNDS MANAGEMENT LTD. new | 147,200 | $2M | 0.1% | 2025-Q3 stale |
| AXA S.A. added | 179,519 | $2M | 0.1% | 2025-Q2 stale |
| Maven Securities LTD new | 75,000 | $2M | 0.1% | 2025-Q4 stale |
| Verition Fund Management LLC added | 72,864 | $2M | 0.1% | 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.