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Institutional Ownership · SEC Form 13F

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.

106
Institutional holders
12,824,213
Shares held (tracked funds)
72.8%
Of shares outstanding

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).

FundSharesReported value% of valueQuarter
Cormorant Asset Management, LP2,344,971$22M15.0%2026-Q1
ORBIMED ADVISORS LLC added1,737,287$16M11.1%2026-Q1
Aberdeen Group plc1,321,750$12M8.5%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new734,106$7M4.7%2026-Q1
CITADEL ADVISORS LLC trimmed727,060$7M4.7%2026-Q1
Prosight Management, LP added697,108$7M4.5%2026-Q1
DIADEMA PARTNERS LP new439,957$4M2.8%2026-Q1
Stonepine Capital Management, LLC trimmed383,462$4M2.5%2026-Q1
ARMISTICE CAPITAL, LLC trimmed364,000$3M2.3%2026-Q1
RENAISSANCE TECHNOLOGIES LLC trimmed346,998$3M2.2%2026-Q1
SUSQUEHANNA INTERNATIONAL GROUP, LLP added333,415$3M2.1%2026-Q1
ADAR1 Capital Management, LLC added331,781$3M2.1%2026-Q1
BlackRock, Inc. added271,636$3M1.7%2026-Q1
Exome Asset Management LLC added234,136$2M1.5%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added187,029$2M1.2%2026-Q1
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed160,462$2M1.0%2026-Q1
MARSHALL WACE, LLP added142,491$1M0.9%2026-Q1
DIMENSIONAL FUND ADVISORS LP added136,602$1M0.9%2026-Q1
Persistent Asset Partners Ltd added111,226$1M0.7%2026-Q1
ACADIAN ASSET MANAGEMENT LLC added108,792$1M0.7%2026-Q1
MILLENNIUM MANAGEMENT LLC added107,800$1M0.7%2026-Q1
VANGUARD FIDUCIARY TRUST CO new96,241$904K0.6%2026-Q1
GOLDMAN SACHS GROUP INC added93,111$874K0.6%2026-Q1
Seven Fleet Capital Management LP added85,687$805K0.5%2026-Q1
683 Capital Management, LLC85,543$803K0.5%2026-Q1
Assenagon Asset Management S.A. trimmed85,246$800K0.5%2026-Q1
JANE STREET GROUP, LLC added73,193$687K0.5%2026-Q1
STATE STREET CORP added68,872$647K0.4%2026-Q1
BALYASNY ASSET MANAGEMENT L.P. trimmed65,201$612K0.4%2026-Q1
SIMPLEX TRADING, LLC added52,836$496K0.3%2026-Q1
Point72 Asset Management, L.P. trimmed51,296$482K0.3%2026-Q1
PRELUDE CAPITAL MANAGEMENT, LLC added50,826$477K0.3%2026-Q1
Verdad Advisers, LP new50,252$472K0.3%2026-Q1
Rangeley Capital, LLC new44,840$421K0.3%2026-Q1
NORTHERN TRUST CORP trimmed41,504$390K0.3%2026-Q1
CANTOR FITZGERALD, L. P. new40,098$377K0.3%2026-Q1
UBS Group AG trimmed38,638$363K0.2%2026-Q1
XTX Topco Ltd added38,023$357K0.2%2026-Q1
MORGAN STANLEY added32,854$308K0.2%2026-Q1
Brevan Howard Capital Management LP added32,679$307K0.2%2026-Q1
Jump Financial, LLC trimmed30,600$287K0.2%2026-Q1
ROYAL BANK OF CANADA added29,901$281K0.2%2026-Q1
Hudson Bay Capital Management LP added29,578$278K0.2%2026-Q1
D. E. Shaw & Co., Inc. trimmed26,474$249K0.2%2026-Q1
Velan Capital Investment Management LP added26,000$244K0.2%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new24,365$229K0.2%2026-Q1
Quadrature Capital Ltd trimmed22,986$216K0.1%2026-Q1
EXCHANGE TRADED CONCEPTS, LLC new22,131$208K0.1%2026-Q1
Pale Fire Capital SE added21,350$200K0.1%2026-Q1
BARCLAYS PLC added20,782$195K0.1%2026-Q1
Laurion Capital Management LP added19,600$184K0.1%2026-Q1
HRT FINANCIAL LP added18,660$175K0.1%2026-Q1
Qube Research & Technologies Ltd added18,476$173K0.1%2026-Q1
CITIGROUP INC added16,708$157K0.1%2026-Q1
OMERS ADMINISTRATION Corp trimmed15,200$143K0.1%2026-Q1
AMERICAN CENTURY COMPANIES INC added15,139$142K0.1%2026-Q1
Engineers Gate Manager LP trimmed14,200$133K0.1%2026-Q1
BANK OF AMERICA CORP /DE/ added13,960$131K0.1%2026-Q1
BAILARD, INC. new13,500$127K0.1%2026-Q1
Mariner, LLC trimmed12,806$120K0.1%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/12,572$119K0.1%2026-Q1
CANADA PENSION PLAN INVESTMENT BOARD trimmed12,400$116K0.1%2026-Q1
BNP PARIBAS FINANCIAL MARKETS added10,489$98K0.1%2026-Q1
GROUP ONE TRADING LLC added7,198$68K0.0%2026-Q1
Caption Management, LLC trimmed6,470$61K0.0%2026-Q1
Vanguard Global Advisers, LLC new4,695$44K0.0%2026-Q1
Octagon Capital Advisors LP trimmed955,000$8M5.3%2025-Q4 stale
VANGUARD GROUP INC added859,407$7M4.8%2025-Q4 stale
COMERICA BANK200,001$2M1.1%2025-Q4 stale
TANG CAPITAL MANAGEMENT LLC127,520$2M1.1%2025-Q3 stale
HighVista Strategies LLC added118,027$1M1.0%2025-Q3 stale
AMERIPRISE FINANCIAL INC added135,730$1M0.8%2025-Q4 stale
Atle Fund Management AB trimmed107,255$873K0.6%2025-Q4 stale
SUPERSTRING CAPITAL MANAGEMENT LP added57,644$729K0.5%2025-Q3 stale
CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed68,148$470K0.3%2025-Q2 stale
BRC Group Holdings, Inc. new38,714$315K0.2%2025-Q4 stale
Baker Avenue Asset Management, LP added24,191$306K0.2%2025-Q3 stale
Nuveen, LLC new45,689$243K0.2%2025-Q1 stale
Trexquant Investment LP added27,275$222K0.2%2025-Q4 stale
AQR CAPITAL MANAGEMENT LLC trimmed28,407$196K0.1%2025-Q2 stale
AlphaQuest LLC added22,906$186K0.1%2025-Q4 stale
SCHRODER INVESTMENT MANAGEMENT GROUP31,295$173K0.1%2025-Q1 stale
Y-Intercept (Hong Kong) Ltd added20,437$141K0.1%2025-Q2 stale
Walleye Trading LLC trimmed15,851$129K0.1%2025-Q4 stale
Catalyst Funds Management Pty Ltd new10,149$128K0.1%2025-Q3 stale
SHERBROOKE PARK ADVISERS LLC new15,410$125K0.1%2025-Q4 stale
Squarepoint Ops LLC trimmed17,898$123K0.1%2025-Q2 stale
Bank of New York Mellon Corp trimmed23,206$123K0.1%2025-Q1 stale
Verition Fund Management LLC trimmed22,485$119K0.1%2025-Q1 stale
Aster Capital Management (DIFC) Ltd new16,509$114K0.1%2025-Q2 stale
TWO SIGMA ADVISERS, LP trimmed16,340$113K0.1%2025-Q2 stale
TWO SIGMA INVESTMENTS, LP trimmed12,480$102K0.1%2025-Q4 stale
SEI INVESTMENTS CO added17,589$93K0.1%2025-Q1 stale
GSA CAPITAL PARTNERS LLP trimmed11,056$90K0.1%2025-Q4 stale
Virtu Financial LLC added10,760$88K0.1%2025-Q4 stale
Corton Capital Inc. new12,516$86K0.1%2025-Q2 stale
Jain Global LLC trimmed12,369$85K0.1%2025-Q2 stale
WEXFORD CAPITAL LP trimmed15,400$82K0.1%2025-Q1 stale
OCCUDO QUANTITATIVE STRATEGIES LP new13,073$72K0.0%2025-Q1 stale
Avanza Fonder AB trimmed4,868$40K0.0%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.

HoldersTotal shares

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.

Learn how to read institutional ownership