Who owns Forte Biosciences, Inc. (FBRX)
Which tracked institutional funds hold FBRX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See FBRX 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
24 tracked funds added or opened FBRX while 21 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
FBRX’s largest tracked holder by dollar value, FEDERATED HERMES, INC., sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in FBRX 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 69 tracked filers holding FBRX, 41 increased or opened the position and 30 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 FBRX 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 14
- MPM BIOIMPACT LLC$26M
- VANGUARD CAPITAL MANAGEMENT LLC$14M
- CITADEL ADVISORS LLC$6M
- Integral Health Asset Management, LLC$4M
- LORD, ABBETT & CO. LLC$3M
- Russell Investments Group, Ltd.$2M
Full exits 3
- VANGUARD GROUP INC$16M
- Point72 Asset Management, L.P.$13M
- AlphaQuest LLC$513K
Largest adds
- ADAGE CAPITAL PARTNERS GP, L.L.C.$16M
- MORGAN STANLEY$11M
- MARSHALL WACE, LLP$3M
- MILLENNIUM MANAGEMENT LLC$2M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$2M
- Trexquant Investment LP$2M
Largest trims
- JANUS HENDERSON GROUP PLC$8M
- FRED ALGER MANAGEMENT, LLC$7M
- Jain Global LLC$5M
- Ikarian Capital, LLC$5M
- FEDERATED HERMES, INC.$2M
- ORBIMED ADVISORS LLC$2M
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 |
|---|---|---|---|---|
| FEDERATED HERMES, INC. | 1,765,516 | $46M | 11.4% | 2026-Q1 |
| FRED ALGER MANAGEMENT, LLC trimmed | 1,273,965 | $33M | 8.3% | 2026-Q1 |
| ORBIMED ADVISORS LLC | 1,196,955 | $31M | 7.8% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 1,188,060 | $31M | 7.7% | 2026-Q1 |
| Affinity Asset Advisors, LLC added | 1,011,890 | $26M | 6.6% | 2026-Q1 |
| MPM BIOIMPACT LLC new | 1,000,682 | $26M | 6.5% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 950,000 | $25M | 6.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 531,692 | $14M | 3.4% | 2026-Q1 |
| MORGAN STANLEY added | 500,298 | $13M | 3.2% | 2026-Q1 |
| Cable Car Capital, LP | 400,000 | $10M | 2.6% | 2026-Q1 |
| FMR LLC added | 340,695 | $9M | 2.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 337,983 | $9M | 2.2% | 2026-Q1 |
| Woodline Partners LP | 331,987 | $9M | 2.2% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 233,369 | $6M | 1.5% | 2026-Q1 |
| AWM Investment Company, Inc. trimmed | 200,000 | $5M | 1.3% | 2026-Q1 |
| SPHERA FUNDS MANAGEMENT LTD. trimmed | 184,984 | $5M | 1.2% | 2026-Q1 |
| Integral Health Asset Management, LLC new | 150,000 | $4M | 1.0% | 2026-Q1 |
| MARSHALL WACE, LLP added | 145,822 | $4M | 0.9% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 133,494 | $3M | 0.9% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 125,442 | $3M | 0.8% | 2026-Q1 |
| Ikarian Capital, LLC trimmed | 118,972 | $3M | 0.8% | 2026-Q1 |
| LORD, ABBETT & CO. LLC new | 114,635 | $3M | 0.7% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 111,788 | $3M | 0.7% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 91,772 | $2M | 0.6% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 85,969 | $2M | 0.6% | 2026-Q1 |
| Candriam S.C.A. new | 84,803 | $2M | 0.5% | 2026-Q1 |
| Trexquant Investment LP added | 73,651 | $2M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 72,095 | $2M | 0.5% | 2026-Q1 |
| BlackRock, Inc. added | 65,921 | $2M | 0.4% | 2026-Q1 |
| STEMPOINT CAPITAL LP new | 58,020 | $2M | 0.4% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 57,933 | $2M | 0.4% | 2026-Q1 |
| STATE STREET CORP added | 54,821 | $1M | 0.4% | 2026-Q1 |
| J. Goldman & Co LP trimmed | 54,174 | $1M | 0.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 53,473 | $1M | 0.3% | 2026-Q1 |
| HRT FINANCIAL LP added | 40,000 | $1M | 0.3% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP new | 29,491 | $764K | 0.2% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 28,697 | $743K | 0.2% | 2026-Q1 |
| MANGROVE PARTNERS IM, LLC new | 25,706 | $666K | 0.2% | 2026-Q1 |
| Weil Company, Inc. new | 24,765 | $641K | 0.2% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 23,712 | $614K | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 21,606 | $560K | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 20,755 | $538K | 0.1% | 2026-Q1 |
| UBS Group AG trimmed | 20,450 | $530K | 0.1% | 2026-Q1 |
| 683 Capital Management, LLC trimmed | 20,000 | $518K | 0.1% | 2026-Q1 |
| Hudson Bay Capital Management LP added | 19,083 | $494K | 0.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. new | 18,717 | $485K | 0.1% | 2026-Q1 |
| Quadrature Capital Ltd added | 18,622 | $482K | 0.1% | 2026-Q1 |
| Engineers Gate Manager LP new | 16,427 | $425K | 0.1% | 2026-Q1 |
| Jain Global LLC trimmed | 15,597 | $404K | 0.1% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 15,509 | $402K | 0.1% | 2026-Q1 |
| Brevan Howard Capital Management LP new | 14,020 | $363K | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 13,747 | $356K | 0.1% | 2026-Q1 |
| ROYAL BANK OF CANADA added | 13,389 | $346K | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 13,268 | $344K | 0.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 12,699 | $329K | 0.1% | 2026-Q1 |
| ALPS ADVISORS INC trimmed | 10,200 | $264K | 0.1% | 2026-Q1 |
| Persistent Asset Partners Ltd trimmed | 6,744 | $175K | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 4,500 | $117K | 0.0% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 3,436 | $89K | 0.0% | 2026-Q1 |
| SIMPLEX TRADING, LLC trimmed | 2,312 | $60K | 0.0% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN | 502 | $13K | 0.0% | 2026-Q1 |
| FIFTH THIRD BANCORP new | 496 | $13K | 0.0% | 2026-Q1 |
| Steward Partners Investment Advisory, LLC trimmed | 493 | $13K | 0.0% | 2026-Q1 |
| NATIONAL BANK OF CANADA /FI/ added | 478 | $12K | 0.0% | 2026-Q1 |
| GROUP ONE TRADING LLC | 204 | $5K | 0.0% | 2026-Q1 |
| ASSETMARK, INC trimmed | 46 | $1K | 0.0% | 2026-Q1 |
| SBI Securities Co., Ltd. | 12 | $311 | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 8 | $211 | 0.0% | 2026-Q1 |
| REAP Financial Group, LLC | 3 | $78 | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 582,263 | $16M | 4.0% | 2025-Q4 stale |
| Point72 Asset Management, L.P. trimmed | 487,275 | $13M | 3.3% | 2025-Q4 stale |
| TYBOURNE CAPITAL MANAGEMENT (HK) LTD | 786,647 | $12M | 3.0% | 2025-Q3 stale |
| HEIGHTS CAPITAL MANAGEMENT, INC new | 143,033 | $2M | 0.5% | 2025-Q2 stale |
| Mink Brook Asset Management LLC added | 81,312 | $1M | 0.3% | 2025-Q3 stale |
| BVF INC/IL trimmed | 65,350 | $980K | 0.2% | 2025-Q3 stale |
| PERCEPTIVE ADVISORS LLC trimmed | 68,192 | $882K | 0.2% | 2025-Q2 stale |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 58,637 | $758K | 0.2% | 2025-Q2 stale |
| AlphaQuest LLC added | 18,804 | $513K | 0.1% | 2025-Q4 stale |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. new | 15,804 | $431K | 0.1% | 2025-Q4 stale |
| OMERS ADMINISTRATION Corp new | 15,600 | $425K | 0.1% | 2025-Q4 stale |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 16,200 | $243K | 0.1% | 2025-Q3 stale |
| DIMENSIONAL FUND ADVISORS LP new | 10,765 | $161K | 0.0% | 2025-Q3 stale |
| ACUTA CAPITAL PARTNERS, LLC added | 18,469 | $143K | 0.0% | 2025-Q1 stale |
| Garde Capital, Inc. | 3,960 | $51K | 0.0% | 2025-Q2 stale |
| CITIGROUP INC trimmed | 1,279 | $35K | 0.0% | 2025-Q4 stale |
| Global Retirement Partners, LLC new | 1,000 | $27K | 0.0% | 2025-Q4 stale |
| Tower Research Capital LLC (TRC) added | 773 | $21K | 0.0% | 2025-Q4 stale |
| PRIVATE TRUST CO NA added | 274 | $4K | 0.0% | 2025-Q3 stale |
| COMERICA BANK | 150 | $4K | 0.0% | 2025-Q4 stale |
| Rockefeller Capital Management L.P. new | 28 | $764 | 0.0% | 2025-Q4 stale |
| Newbridge Financial Services Group, Inc. new | 0 | — | 0.0% | 2025-Q2 stale |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 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.