Who owns CRBP (CRBP)
Which tracked institutional funds hold CRBP, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CRBP 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
23 tracked funds added or opened CRBP while 9 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
CRBP’s largest tracked holder by dollar value, Cormorant Asset Management, LP, sizes it at 1.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in CRBP 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 106 tracked filers holding CRBP, 57 increased or opened the position and 40 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 CRBP 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 3
- VANGUARD CAPITAL MANAGEMENT LLC$7M
- DIADEMA PARTNERS LP$4M
- VANGUARD FIDUCIARY TRUST CO$904K
Full exits 5
- Octagon Capital Advisors LP$8M
- VANGUARD GROUP INC$7M
- COMERICA BANK$2M
- AMERIPRISE FINANCIAL INC$1M
- Atle Fund Management AB$873K
Largest adds
- ORBIMED ADVISORS LLC$3M
- Cormorant Asset Management, LP$3M
- Aberdeen Group plc$2M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$1M
- Exome Asset Management LLC$1M
- Persistent Asset Partners Ltd$991K
Largest trims
- ARMISTICE CAPITAL, LLC$945K
- Assenagon Asset Management S.A.$730K
- BALYASNY ASSET MANAGEMENT L.P.$473K
- Caption Management, LLC$396K
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 |
|---|---|---|---|---|
| Cormorant Asset Management, LP | 2,344,971 | $22M | 15.0% | 2026-Q1 |
| ORBIMED ADVISORS LLC added | 1,737,287 | $16M | 11.1% | 2026-Q1 |
| Aberdeen Group plc | 1,321,750 | $12M | 8.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 734,106 | $7M | 4.7% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 727,060 | $7M | 4.7% | 2026-Q1 |
| Prosight Management, LP added | 697,108 | $7M | 4.5% | 2026-Q1 |
| DIADEMA PARTNERS LP new | 439,957 | $4M | 2.8% | 2026-Q1 |
| Stonepine Capital Management, LLC trimmed | 383,462 | $4M | 2.5% | 2026-Q1 |
| ARMISTICE CAPITAL, LLC trimmed | 364,000 | $3M | 2.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 346,998 | $3M | 2.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 333,415 | $3M | 2.1% | 2026-Q1 |
| ADAR1 Capital Management, LLC added | 331,781 | $3M | 2.1% | 2026-Q1 |
| BlackRock, Inc. added | 271,636 | $3M | 1.7% | 2026-Q1 |
| Exome Asset Management LLC added | 234,136 | $2M | 1.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 187,029 | $2M | 1.2% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 160,462 | $2M | 1.0% | 2026-Q1 |
| MARSHALL WACE, LLP added | 142,491 | $1M | 0.9% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 136,602 | $1M | 0.9% | 2026-Q1 |
| Persistent Asset Partners Ltd added | 111,226 | $1M | 0.7% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 108,792 | $1M | 0.7% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 107,800 | $1M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 96,241 | $904K | 0.6% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 93,111 | $874K | 0.6% | 2026-Q1 |
| Seven Fleet Capital Management LP added | 85,687 | $805K | 0.5% | 2026-Q1 |
| 683 Capital Management, LLC | 85,543 | $803K | 0.5% | 2026-Q1 |
| Assenagon Asset Management S.A. trimmed | 85,246 | $800K | 0.5% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 73,193 | $687K | 0.5% | 2026-Q1 |
| STATE STREET CORP added | 68,872 | $647K | 0.4% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 65,201 | $612K | 0.4% | 2026-Q1 |
| SIMPLEX TRADING, LLC added | 52,836 | $496K | 0.3% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 51,296 | $482K | 0.3% | 2026-Q1 |
| PRELUDE CAPITAL MANAGEMENT, LLC added | 50,826 | $477K | 0.3% | 2026-Q1 |
| Verdad Advisers, LP new | 50,252 | $472K | 0.3% | 2026-Q1 |
| Rangeley Capital, LLC new | 44,840 | $421K | 0.3% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 41,504 | $390K | 0.3% | 2026-Q1 |
| CANTOR FITZGERALD, L. P. new | 40,098 | $377K | 0.3% | 2026-Q1 |
| UBS Group AG trimmed | 38,638 | $363K | 0.2% | 2026-Q1 |
| XTX Topco Ltd added | 38,023 | $357K | 0.2% | 2026-Q1 |
| MORGAN STANLEY added | 32,854 | $308K | 0.2% | 2026-Q1 |
| Brevan Howard Capital Management LP added | 32,679 | $307K | 0.2% | 2026-Q1 |
| Jump Financial, LLC trimmed | 30,600 | $287K | 0.2% | 2026-Q1 |
| ROYAL BANK OF CANADA added | 29,901 | $281K | 0.2% | 2026-Q1 |
| Hudson Bay Capital Management LP added | 29,578 | $278K | 0.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 26,474 | $249K | 0.2% | 2026-Q1 |
| Velan Capital Investment Management LP added | 26,000 | $244K | 0.2% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 24,365 | $229K | 0.2% | 2026-Q1 |
| Quadrature Capital Ltd trimmed | 22,986 | $216K | 0.1% | 2026-Q1 |
| EXCHANGE TRADED CONCEPTS, LLC new | 22,131 | $208K | 0.1% | 2026-Q1 |
| Pale Fire Capital SE added | 21,350 | $200K | 0.1% | 2026-Q1 |
| BARCLAYS PLC added | 20,782 | $195K | 0.1% | 2026-Q1 |
| Laurion Capital Management LP added | 19,600 | $184K | 0.1% | 2026-Q1 |
| HRT FINANCIAL LP added | 18,660 | $175K | 0.1% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 18,476 | $173K | 0.1% | 2026-Q1 |
| CITIGROUP INC added | 16,708 | $157K | 0.1% | 2026-Q1 |
| OMERS ADMINISTRATION Corp trimmed | 15,200 | $143K | 0.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 15,139 | $142K | 0.1% | 2026-Q1 |
| Engineers Gate Manager LP trimmed | 14,200 | $133K | 0.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 13,960 | $131K | 0.1% | 2026-Q1 |
| BAILARD, INC. new | 13,500 | $127K | 0.1% | 2026-Q1 |
| Mariner, LLC trimmed | 12,806 | $120K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 12,572 | $119K | 0.1% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 12,400 | $116K | 0.1% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 10,489 | $98K | 0.1% | 2026-Q1 |
| GROUP ONE TRADING LLC added | 7,198 | $68K | 0.0% | 2026-Q1 |
| Caption Management, LLC trimmed | 6,470 | $61K | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 4,695 | $44K | 0.0% | 2026-Q1 |
| Octagon Capital Advisors LP trimmed | 955,000 | $8M | 5.3% | 2025-Q4 stale |
| VANGUARD GROUP INC added | 859,407 | $7M | 4.8% | 2025-Q4 stale |
| COMERICA BANK | 200,001 | $2M | 1.1% | 2025-Q4 stale |
| TANG CAPITAL MANAGEMENT LLC | 127,520 | $2M | 1.1% | 2025-Q3 stale |
| HighVista Strategies LLC added | 118,027 | $1M | 1.0% | 2025-Q3 stale |
| AMERIPRISE FINANCIAL INC added | 135,730 | $1M | 0.8% | 2025-Q4 stale |
| Atle Fund Management AB trimmed | 107,255 | $873K | 0.6% | 2025-Q4 stale |
| SUPERSTRING CAPITAL MANAGEMENT LP added | 57,644 | $729K | 0.5% | 2025-Q3 stale |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 68,148 | $470K | 0.3% | 2025-Q2 stale |
| BRC Group Holdings, Inc. new | 38,714 | $315K | 0.2% | 2025-Q4 stale |
| Baker Avenue Asset Management, LP added | 24,191 | $306K | 0.2% | 2025-Q3 stale |
| Nuveen, LLC new | 45,689 | $243K | 0.2% | 2025-Q1 stale |
| Trexquant Investment LP added | 27,275 | $222K | 0.2% | 2025-Q4 stale |
| AQR CAPITAL MANAGEMENT LLC trimmed | 28,407 | $196K | 0.1% | 2025-Q2 stale |
| AlphaQuest LLC added | 22,906 | $186K | 0.1% | 2025-Q4 stale |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 31,295 | $173K | 0.1% | 2025-Q1 stale |
| Y-Intercept (Hong Kong) Ltd added | 20,437 | $141K | 0.1% | 2025-Q2 stale |
| Walleye Trading LLC trimmed | 15,851 | $129K | 0.1% | 2025-Q4 stale |
| Catalyst Funds Management Pty Ltd new | 10,149 | $128K | 0.1% | 2025-Q3 stale |
| SHERBROOKE PARK ADVISERS LLC new | 15,410 | $125K | 0.1% | 2025-Q4 stale |
| Squarepoint Ops LLC trimmed | 17,898 | $123K | 0.1% | 2025-Q2 stale |
| Bank of New York Mellon Corp trimmed | 23,206 | $123K | 0.1% | 2025-Q1 stale |
| Verition Fund Management LLC trimmed | 22,485 | $119K | 0.1% | 2025-Q1 stale |
| Aster Capital Management (DIFC) Ltd new | 16,509 | $114K | 0.1% | 2025-Q2 stale |
| TWO SIGMA ADVISERS, LP trimmed | 16,340 | $113K | 0.1% | 2025-Q2 stale |
| TWO SIGMA INVESTMENTS, LP trimmed | 12,480 | $102K | 0.1% | 2025-Q4 stale |
| SEI INVESTMENTS CO added | 17,589 | $93K | 0.1% | 2025-Q1 stale |
| GSA CAPITAL PARTNERS LLP trimmed | 11,056 | $90K | 0.1% | 2025-Q4 stale |
| Virtu Financial LLC added | 10,760 | $88K | 0.1% | 2025-Q4 stale |
| Corton Capital Inc. new | 12,516 | $86K | 0.1% | 2025-Q2 stale |
| Jain Global LLC trimmed | 12,369 | $85K | 0.1% | 2025-Q2 stale |
| WEXFORD CAPITAL LP trimmed | 15,400 | $82K | 0.1% | 2025-Q1 stale |
| OCCUDO QUANTITATIVE STRATEGIES LP new | 13,073 | $72K | 0.0% | 2025-Q1 stale |
| Avanza Fonder AB trimmed | 4,868 | $40K | 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.