Who owns C4 Therapeutics (CCCC)
Which tracked institutional funds hold CCCC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CCCC 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
The tracked-fund tape on CCCC is one-sided between 2026-Q1 and 2026-Q2: 62 added or opened and 11 trimmed or exited — on balance accumulating.
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
CCCC’s largest tracked holder by dollar value, MORGAN STANLEY, 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 gap the other way — the median holder sizes CCCC more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in CCCC 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 145 tracked filers holding CCCC, 102 increased or opened the position and 53 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 CCCC 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 16
- Ikarian Capital, LLC$11M
- Candriam S.C.A.$8M
- Patient Square Capital LP$8M
- HighVista Strategies LLC$6M
- BOOTHBAY FUND MANAGEMENT, LLC$3M
- VANGUARD PORTFOLIO MANAGEMENT LLC$3M
Full exits 5
- ACADIAN ASSET MANAGEMENT LLC$5M
- ORBIMED ADVISORS LLC$2M
- 683 Capital Management, LLC$789K
- HRT FINANCIAL LP$719K
- Hennion & Walsh Asset Management, Inc.$587K
Largest adds
- BlackRock, Inc.$31M
- Squadron Capital Management LLC$28M
- MORGAN STANLEY$18M
- RA CAPITAL MANAGEMENT, L.P.$16M
- Lynx1 Capital Management LP$16M
- Bain Capital Life Sciences Investors, LLC$15M
Largest trims
- MILLENNIUM MANAGEMENT LLC$3M
- JANE STREET GROUP, LLC$2M
- RENAISSANCE TECHNOLOGIES LLC$918K
- JACOBS LEVY EQUITY MANAGEMENT, INC$579K
- BARCLAYS PLC$488K
- TORONTO DOMINION BANK$456K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| MORGAN STANLEY trimmed | 8,867,338 | $41M | 7.7% | 2026-Q2 |
| RA CAPITAL MANAGEMENT, L.P. | 8,000,000 | $37M | 7.0% | 2026-Q2 |
| BlackRock, Inc. added | 7,896,718 | $37M | 6.9% | 2026-Q2 |
| Lynx1 Capital Management LP added | 7,326,691 | $34M | 6.4% | 2026-Q2 |
| Squadron Capital Management LLC added | 7,200,000 | $34M | 6.3% | 2026-Q2 |
| Bain Capital Life Sciences Investors, LLC | 7,171,910 | $33M | 6.2% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 4,747,424 | $21M | 3.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 4,417,731 | $21M | 3.8% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 4,187,580 | $20M | 3.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 3,530,991 | $16M | 3.1% | 2026-Q2 |
| WASATCH ADVISORS LP added | 3,522,644 | $16M | 3.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 3,469,707 | $16M | 3.0% | 2026-Q2 |
| Soleus Capital Management, L.P. trimmed | 3,377,981 | $16M | 2.9% | 2026-Q2 |
| SILVERARC CAPITAL MANAGEMENT, LLC added | 3,032,060 | $14M | 2.6% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 2,656,359 | $12M | 2.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,522,163 | $12M | 2.2% | 2026-Q2 |
| Ikarian Capital, LLC new | 2,433,000 | $11M | 2.1% | 2026-Q2 |
| STATE STREET CORP added | 2,115,621 | $10M | 1.8% | 2026-Q2 |
| Candriam S.C.A. new | 1,796,937 | $8M | 1.6% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 1,740,989 | $8M | 1.5% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 1,732,210 | $8M | 1.5% | 2026-Q2 |
| Patient Square Capital LP new | 1,608,815 | $8M | 1.4% | 2026-Q2 |
| HighVista Strategies LLC new | 1,348,136 | $6M | 1.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,189,828 | $6M | 1.0% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,188,507 | $6M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 1,160,547 | $5M | 1.0% | 2026-Q2 |
| CONGRESS ASSET MANAGEMENT CO added | 1,003,437 | $5M | 0.9% | 2026-Q2 |
| FMR LLC added | 894,054 | $4M | 0.8% | 2026-Q2 |
| UBS Group AG added | 828,970 | $4M | 0.7% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 781,060 | $4M | 0.7% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC new | 736,331 | $3M | 0.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 680,094 | $3M | 0.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 609,146 | $3M | 0.5% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 580,195 | $3M | 0.5% | 2026-Q2 |
| Velan Capital Investment Management LP new | 570,000 | $3M | 0.5% | 2026-Q2 |
| STEMPOINT CAPITAL LP added | 523,648 | $2M | 0.5% | 2026-Q2 |
| Rockefeller Capital Management L.P. new | 495,817 | $2M | 0.4% | 2026-Q2 |
| Nuveen, LLC added | 484,010 | $2M | 0.4% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 452,701 | $2M | 0.4% | 2026-Q2 |
| Man Group plc added | 408,648 | $2M | 0.4% | 2026-Q2 |
| PLATINUM INVESTMENT MANAGEMENT LTD | 384,766 | $2M | 0.3% | 2026-Q2 |
| Seven Fleet Capital Management LP added | 381,169 | $2M | 0.3% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 370,554 | $2M | 0.3% | 2026-Q2 |
| Atom Investors LP added | 364,351 | $2M | 0.3% | 2026-Q2 |
| Susquehanna Portfolio Strategies, LLC added | 335,079 | $2M | 0.3% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 325,000 | $2M | 0.3% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 302,750 | $1M | 0.3% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 300,734 | $1M | 0.3% | 2026-Q2 |
| ADAR1 Capital Management, LLC added | 291,957 | $1M | 0.3% | 2026-Q2 |
| Invesco Ltd. added | 290,226 | $1M | 0.3% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 264,947 | $1M | 0.2% | 2026-Q2 |
| LPL Financial LLC added | 253,165 | $1M | 0.2% | 2026-Q2 |
| Bank of New York Mellon Corp added | 249,517 | $1M | 0.2% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 227,768 | $1M | 0.2% | 2026-Q2 |
| MARSHALL WACE, LLP added | 227,003 | $1M | 0.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 215,386 | $1M | 0.2% | 2026-Q2 |
| Jump Financial, LLC added | 182,700 | $853K | 0.2% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 173,965 | $812K | 0.2% | 2026-Q2 |
| Squarepoint Ops LLC added | 170,834 | $798K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 155,881 | $728K | 0.1% | 2026-Q2 |
| Headlands Technologies LLC new | 153,972 | $719K | 0.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 150,681 | $704K | 0.1% | 2026-Q2 |
| XTX Topco Ltd added | 135,438 | $632K | 0.1% | 2026-Q2 |
| Palumbo Wealth Management LLC new | 132,417 | $618K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 131,877 | $616K | 0.1% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 131,100 | $612K | 0.1% | 2026-Q2 |
| Walleye Capital LLC trimmed | 115,125 | $538K | 0.1% | 2026-Q2 |
| ALPS ADVISORS INC new | 112,214 | $524K | 0.1% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 101,500 | $474K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 98,873 | $462K | 0.1% | 2026-Q2 |
| Verition Fund Management LLC added | 95,000 | $444K | 0.1% | 2026-Q2 |
| Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance Group | 85,000 | $397K | 0.1% | 2026-Q2 |
| Aster Capital Management (DIFC) Ltd | 77,734 | $111K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 74,516 | $348K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 74,373 | $347K | 0.1% | 2026-Q2 |
| Crestwood Advisors Group, LLC | 66,536 | $311K | 0.1% | 2026-Q2 |
| CV Advisors LLC new | 65,000 | $304K | 0.1% | 2026-Q2 |
| INTREPID FAMILY OFFICE LLC added | 65,000 | $304K | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 64,780 | $170K | 0.0% | 2026-Q2 |
| MetLife Investment Management, LLC added | 61,393 | $287K | 0.1% | 2026-Q2 |
| Jain Global LLC trimmed | 57,562 | $269K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 49,389 | $231K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 46,474 | $217K | 0.0% | 2026-Q2 |
| SEI INVESTMENTS CO added | 42,376 | $198K | 0.0% | 2026-Q2 |
| Quadrature Capital Ltd trimmed | 36,726 | $172K | 0.0% | 2026-Q2 |
| Caption Management, LLC new | 35,000 | $163K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 33,832 | $158K | 0.0% | 2026-Q2 |
| Dynamic Technology Lab Private Ltd added | 32,828 | $153K | 0.0% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 31,235 | $146K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey added | 29,893 | $140K | 0.0% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 27,513 | $128K | 0.0% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 25,111 | $117K | 0.0% | 2026-Q2 |
| Cresset Asset Management, LLC | 25,000 | $117K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 24,100 | $113K | 0.0% | 2026-Q2 |
| StoneX Group Inc. new | 22,420 | $102K | 0.0% | 2026-Q2 |
| GROUP ONE TRADING LLC trimmed | 21,773 | $102K | 0.0% | 2026-Q2 |
| Corient Private Wealth LP | 21,387 | $100K | 0.0% | 2026-Q2 |
| Scientech Research LLC new | 21,260 | $99K | 0.0% | 2026-Q2 |
| Quantbot Technologies LP new | 20,827 | $97K | 0.0% | 2026-Q2 |
| PRELUDE CAPITAL MANAGEMENT, LLC trimmed | 19,700 | $92K | 0.0% | 2026-Q2 |
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.