Who owns Crescent Biopharma (CBIO)
Which tracked institutional funds hold CBIO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CBIO company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
23 tracked funds added or opened CBIO while 20 trimmed or exited it between 2026-Q1 and 2026-Q2 — 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
CBIO’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 CBIO 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 2026-Q1 and 2026-Q2, across 80 tracked filers holding CBIO, 49 increased or opened the position and 26 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 CBIO between the 2026-Q1 and 2026-Q2 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 10
- Remedium Capital Partners, LLC$7M
- AMERIPRISE FINANCIAL INC$5M
- VANGUARD PORTFOLIO MANAGEMENT LLC$3M
- STEMPOINT CAPITAL LP$3M
- SECTORAL ASSET MANAGEMENT INC$2M
- Blackstone Inc.$1M
Full exits 5
- Deep Track Capital, LP$8M
- Alyeska Investment Group, L.P.$5M
- GOLDMAN SACHS GROUP INC$4M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$4M
- Hudson Bay Capital Management LP$2M
Largest adds
- Logos Global Management LP$25M
- BlackRock, Inc.$21M
- GEODE CAPITAL MANAGEMENT, LLC$5M
- STATE STREET CORP$5M
- JENNISON ASSOCIATES LLC$4M
- BALYASNY ASSET MANAGEMENT L.P.$2M
Largest trims
- FMR LLC$2M
- SILVERARC CAPITAL MANAGEMENT, LLC$1M
- BVF INC/IL$1M
- Fairmount Funds Management LLC$1M
- VANGUARD CAPITAL MANAGEMENT LLC$902K
- Stonepine Capital Management, LLC$841K
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 | 4,133,514 | $74M | 12.5% | 2026-Q2 |
| BVF INC/IL | 2,748,763 | $49M | 8.3% | 2026-Q2 |
| Fairmount Funds Management LLC | 2,747,866 | $49M | 8.3% | 2026-Q2 |
| Venrock Adviser, LLC | 2,133,576 | $38M | 6.4% | 2026-Q2 |
| Logos Global Management LP added | 1,900,000 | $34M | 5.7% | 2026-Q2 |
| FCPM III SERVICES B.V. | 1,677,852 | $30M | 5.1% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 1,662,917 | $30M | 5.0% | 2026-Q2 |
| Vestal Point Capital, LP added | 1,630,000 | $29M | 4.9% | 2026-Q2 |
| Opaleye Management Inc. added | 1,319,351 | $24M | 4.0% | 2026-Q2 |
| BlackRock, Inc. added | 1,271,762 | $23M | 3.8% | 2026-Q2 |
| TANG CAPITAL MANAGEMENT LLC | 1,160,000 | $21M | 3.5% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 767,755 | $14M | 2.3% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 403,859 | $7M | 1.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 384,576 | $7M | 1.2% | 2026-Q2 |
| JENNISON ASSOCIATES LLC added | 378,507 | $7M | 1.1% | 2026-Q2 |
| RTW INVESTMENTS, LP | 372,856 | $7M | 1.1% | 2026-Q2 |
| NEXTBio Capital Management LP | 372,856 | $7M | 1.1% | 2026-Q2 |
| Remedium Capital Partners, LLC new | 361,250 | $7M | 1.1% | 2026-Q2 |
| STATE STREET CORP added | 315,587 | $6M | 1.0% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC new | 302,568 | $5M | 0.9% | 2026-Q2 |
| Point72 Asset Management, L.P. | 300,000 | $5M | 0.9% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 275,581 | $5M | 0.8% | 2026-Q2 |
| MARSHALL WACE, LLP added | 214,300 | $4M | 0.6% | 2026-Q2 |
| PERCEPTIVE ADVISORS LLC | 206,942 | $4M | 0.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 188,803 | $3M | 0.6% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 186,874 | $3M | 0.6% | 2026-Q2 |
| STEMPOINT CAPITAL LP new | 182,382 | $3M | 0.6% | 2026-Q2 |
| UBS Group AG added | 175,182 | $3M | 0.5% | 2026-Q2 |
| NORTHERN TRUST CORP added | 138,778 | $2M | 0.4% | 2026-Q2 |
| Exome Asset Management LLC trimmed | 127,769 | $2M | 0.4% | 2026-Q2 |
| SECTORAL ASSET MANAGEMENT INC new | 121,300 | $2M | 0.4% | 2026-Q2 |
| Woodline Partners LP added | 94,488 | $2M | 0.3% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 75,225 | $1M | 0.2% | 2026-Q2 |
| Burkehill Global Management, LP | 74,000 | $1M | 0.2% | 2026-Q2 |
| Blackstone Inc. trimmed | 62,647 | $1M | 0.2% | 2026-Q2 |
| SILVERARC CAPITAL MANAGEMENT, LLC trimmed | 59,104 | $1M | 0.2% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd new | 50,824 | $915K | 0.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC new | 50,258 | $905K | 0.2% | 2026-Q2 |
| Nuveen, LLC new | 47,629 | $857K | 0.1% | 2026-Q2 |
| Bank of New York Mellon Corp new | 45,778 | $824K | 0.1% | 2026-Q2 |
| Stonepine Capital Management, LLC trimmed | 40,000 | $720K | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 25,821 | $465K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS new | 25,487 | $459K | 0.1% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP | 25,000 | $450K | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC new | 24,166 | $435K | 0.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC new | 22,805 | $410K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN new | 19,700 | $355K | 0.1% | 2026-Q2 |
| ADAR1 Capital Management, LLC trimmed | 18,275 | $329K | 0.1% | 2026-Q2 |
| Virtus Investment Advisers, LLC new | 18,258 | $329K | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 17,755 | $320K | 0.1% | 2026-Q2 |
| MORGAN STANLEY trimmed | 17,698 | $319K | 0.1% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 14,600 | $263K | 0.0% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ new | 13,768 | $248K | 0.0% | 2026-Q2 |
| MetLife Investment Management, LLC new | 12,780 | $230K | 0.0% | 2026-Q2 |
| Invesco Ltd. new | 11,731 | $211K | 0.0% | 2026-Q2 |
| Persistent Asset Partners Ltd new | 10,968 | $197K | 0.0% | 2026-Q2 |
| XTX Topco Ltd new | 10,564 | $190K | 0.0% | 2026-Q2 |
| CITIGROUP INC trimmed | 10,141 | $183K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. new | 9,901 | $178K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 9,020 | $162K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND new | 7,600 | $137K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey new | 6,369 | $115K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 4,462 | $80K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 3,303 | $59K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 2,714 | $49K | 0.0% | 2026-Q2 |
| Legal & General Group Plc new | 2,097 | $38K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 1,761 | $32K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. new | 1,726 | $31K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 681 | $12K | 0.0% | 2026-Q2 |
| US BANCORP \DE\ new | 403 | $7K | 0.0% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM new | 297 | $5K | 0.0% | 2026-Q2 |
| Parallel Advisors, LLC | 264 | $5K | 0.0% | 2026-Q2 |
| Allworth Financial LP | 161 | $3K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC new | 76 | $1K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. | 68 | $1K | 0.0% | 2026-Q2 |
| Fortitude Family Office, LLC | 40 | $720 | 0.0% | 2026-Q2 |
| Quarry LP new | 29 | $522 | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. | 26 | $468 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd added | 21 | $378 | 0.0% | 2026-Q2 |
| NATIONAL BANK OF CANADA /FI/ new | 3 | $54 | 0.0% | 2026-Q2 |
| Deep Track Capital, LP | 453,686 | $8M | 1.4% | 2026-Q1 stale (1 quarter behind) |
| Alyeska Investment Group, L.P. | 264,000 | $5M | 0.8% | 2026-Q1 stale (1 quarter behind) |
| GOLDMAN SACHS GROUP INC added | 228,475 | $4M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 213,635 | $4M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| Hudson Bay Capital Management LP new | 88,867 | $2M | 0.3% | 2026-Q1 stale (1 quarter behind) |
| Lighthouse Investment Partners, LLC new | 25,000 | $459K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 24,262 | $446K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Brevan Howard Capital Management LP new | 19,530 | $359K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC trimmed | 557,506 | $7M | 1.1% | 2025-Q4 stale (2 quarters behind) |
| Boxer Capital Management, LLC | 453,686 | $5M | 0.9% | 2025-Q4 stale (2 quarters behind) |
| Driehaus Capital Management LLC | 302,457 | $4M | 0.6% | 2025-Q4 stale (2 quarters behind) |
| HEIGHTS CAPITAL MANAGEMENT, INC new | 264,000 | $3M | 0.5% | 2025-Q4 stale (2 quarters behind) |
| Jefferies Financial Group Inc. trimmed | 64,244 | $762K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| TWO SIGMA ADVISERS, LP new | 32,500 | $385K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Commodore Capital LP trimmed | 450,829 | $5M | 0.9% | 2025-Q3 stale (3 quarters behind) |
| Frazier Life Sciences Management, L.P. trimmed | 272,951 | $3M | 0.5% | 2025-Q3 stale (3 quarters behind) |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 200,005 | $2M | 0.4% | 2025-Q3 stale (3 quarters behind) |
| Soleus Capital Management, L.P. trimmed | 200,000 | $2M | 0.4% | 2025-Q3 stale (3 quarters behind) |
| Paradigm Biocapital Advisors LP new | 642,721 | $10M | 1.7% | 2025-Q2 stale (4 quarters behind) |
| BRAIDWELL LP new | 261,504 | $4M | 0.7% | 2025-Q2 stale (4 quarters behind) |
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.