Who owns Centessa Pharmaceuticals (CNTA)
Which tracked institutional funds hold CNTA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CNTA company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-29). 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
100 tracked funds added or opened CNTA while 38 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
CNTA’s largest tracked holder by dollar value, Medicxi Ventures Management (Jersey) Ltd, sizes it at 80.8% of its own reported 13F book, while the median holder sizes it at 0.3% of theirs — a 80.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in CNTA 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 160 tracked filers holding CNTA, 98 increased or opened the position and 79 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 CNTA 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 31
- Pentwater Capital Management LP$325M
- Paradigm Biocapital Advisors LP$142M
- ALPINE ASSOCIATES MANAGEMENT INC.$34M
- BNP PARIBAS ASSET MANAGEMENT Holding S.A.$28M
- EVENTIDE ASSET MANAGEMENT, LLC$27M
- TORONTO DOMINION BANK$26M
Full exits 21
- PRICE T ROWE ASSOCIATES INC /MD/$98M
- STEMPOINT CAPITAL LP$29M
- Sofinnova Investments, Inc.$28M
- Commodore Capital LP$25M
- ARMISTICE CAPITAL, LLC$13M
- Walleye Capital LLC$11M
Largest adds
- Medicxi Ventures Management (Jersey) Ltd$294M
- Capital World Investors$163M
- EcoR1 Capital, LLC$160M
- Index Venture Life Associates VI Ltd$147M
- MORGAN STANLEY$142M
- PERCEPTIVE ADVISORS LLC$136M
Largest trims
- GENERAL ATLANTIC, L.P.$99M
- Siren, L.L.C.$59M
- FRANKLIN RESOURCES INC$32M
- Jain Global LLC$20M
- MILLENNIUM MANAGEMENT LLC$18M
- JANE STREET GROUP, LLC$10M
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 |
|---|---|---|---|---|
| Medicxi Ventures Management (Jersey) Ltd | 19,963,157 | $793M | 12.9% | 2026-Q1 |
| Avoro Capital Advisors LLC trimmed | 11,430,455 | $454M | 7.4% | 2026-Q1 |
| Index Venture Life Associates VI Ltd | 9,961,789 | $396M | 6.4% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 8,925,010 | $355M | 5.8% | 2026-Q1 |
| Pentwater Capital Management LP new | 8,170,000 | $325M | 5.3% | 2026-Q1 |
| FMR LLC trimmed | 6,852,047 | $272M | 4.4% | 2026-Q1 |
| EcoR1 Capital, LLC added | 6,000,000 | $238M | 3.9% | 2026-Q1 |
| PERCEPTIVE ADVISORS LLC added | 5,258,903 | $209M | 3.4% | 2026-Q1 |
| Capital World Investors added | 4,832,548 | $192M | 3.1% | 2026-Q1 |
| FARALLON CAPITAL MANAGEMENT LLC trimmed | 4,809,000 | $191M | 3.1% | 2026-Q1 |
| TCG Crossover Management, LLC | 4,286,480 | $170M | 2.8% | 2026-Q1 |
| MORGAN STANLEY added | 4,268,353 | $170M | 2.8% | 2026-Q1 |
| Paradigm Biocapital Advisors LP new | 3,574,048 | $142M | 2.3% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 3,492,977 | $139M | 2.3% | 2026-Q1 |
| Deep Track Capital, LP added | 3,158,041 | $125M | 2.0% | 2026-Q1 |
| Logos Global Management LP added | 2,125,000 | $84M | 1.4% | 2026-Q1 |
| RTW INVESTMENTS, LP added | 2,054,175 | $82M | 1.3% | 2026-Q1 |
| FEDERATED HERMES, INC. trimmed | 2,049,439 | $81M | 1.3% | 2026-Q1 |
| BRAIDWELL LP trimmed | 1,986,768 | $79M | 1.3% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 1,932,406 | $77M | 1.2% | 2026-Q1 |
| MAVERICK CAPITAL LTD added | 1,854,488 | $74M | 1.2% | 2026-Q1 |
| First Light Asset Management, LLC trimmed | 1,560,991 | $62M | 1.0% | 2026-Q1 |
| Affinity Asset Advisors, LLC added | 1,400,000 | $56M | 0.9% | 2026-Q1 |
| Foresite Capital Management VI LLC | 1,364,019 | $54M | 0.9% | 2026-Q1 |
| GENERAL ATLANTIC, L.P. trimmed | 1,354,830 | $54M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,144,560 | $45M | 0.7% | 2026-Q1 |
| Siren, L.L.C. trimmed | 1,053,464 | $42M | 0.7% | 2026-Q1 |
| Cormorant Asset Management, LP trimmed | 1,050,000 | $42M | 0.7% | 2026-Q1 |
| ALPINE ASSOCIATES MANAGEMENT INC. new | 865,500 | $34M | 0.6% | 2026-Q1 |
| Woodline Partners LP added | 859,105 | $34M | 0.6% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 852,828 | $34M | 0.6% | 2026-Q1 |
| Octagon Capital Advisors LP | 750,000 | $30M | 0.5% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 722,121 | $29M | 0.5% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. new | 702,254 | $28M | 0.5% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 687,427 | $27M | 0.4% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 684,482 | $27M | 0.4% | 2026-Q1 |
| BAKER BROS. ADVISORS LP | 670,751 | $27M | 0.4% | 2026-Q1 |
| EVENTIDE ASSET MANAGEMENT, LLC new | 668,142 | $27M | 0.4% | 2026-Q1 |
| TORONTO DOMINION BANK added | 654,850 | $26M | 0.4% | 2026-Q1 |
| TIG Advisors, LLC new | 648,326 | $26M | 0.4% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 643,808 | $26M | 0.4% | 2026-Q1 |
| Bain Capital Life Sciences Investors, LLC new | 635,000 | $25M | 0.4% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 628,049 | $25M | 0.4% | 2026-Q1 |
| BlackRock, Inc. added | 625,420 | $25M | 0.4% | 2026-Q1 |
| 5AM Venture Management, LLC | 580,945 | $23M | 0.4% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 570,886 | $23M | 0.4% | 2026-Q1 |
| PFM Health Sciences, LP trimmed | 528,224 | $21M | 0.3% | 2026-Q1 |
| Weiss Asset Management LP new | 510,407 | $20M | 0.3% | 2026-Q1 |
| Spruce Street Capital LP added | 489,849 | $19M | 0.3% | 2026-Q1 |
| SILVERARC CAPITAL MANAGEMENT, LLC added | 466,345 | $19M | 0.3% | 2026-Q1 |
| Trexquant Investment LP added | 390,951 | $16M | 0.3% | 2026-Q1 |
| UBS Group AG trimmed | 359,939 | $14M | 0.2% | 2026-Q1 |
| Rock Springs Capital Management LP added | 351,828 | $14M | 0.2% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 477,597 | $13M | 0.2% | 2026-Q1 |
| GLAZER CAPITAL, LLC new | 325,001 | $13M | 0.2% | 2026-Q1 |
| Alyeska Investment Group, L.P. new | 320,430 | $13M | 0.2% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 307,355 | $12M | 0.2% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 278,064 | $11M | 0.2% | 2026-Q1 |
| Caption Management, LLC added | 274,116 | $11M | 0.2% | 2026-Q1 |
| Nantahala Capital Management, LLC | 254,803 | $10M | 0.2% | 2026-Q1 |
| TD Asset Management Inc trimmed | 242,044 | $10M | 0.2% | 2026-Q1 |
| HighMark Wealth Management LLC | 236,785 | $9M | 0.2% | 2026-Q1 |
| Eagle Health Investments LP added | 214,291 | $9M | 0.1% | 2026-Q1 |
| SummitTX Capital, L.P. trimmed | 206,847 | $8M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 189,961 | $8M | 0.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 185,000 | $7M | 0.1% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC trimmed | 171,933 | $7M | 0.1% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 170,016 | $7M | 0.1% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 168,177 | $7M | 0.1% | 2026-Q1 |
| FRED ALGER MANAGEMENT, LLC added | 168,170 | $7M | 0.1% | 2026-Q1 |
| Holocene Advisors, LP added | 160,942 | $6M | 0.1% | 2026-Q1 |
| Atom Investors LP added | 158,509 | $6M | 0.1% | 2026-Q1 |
| Burkehill Global Management, LP | 150,000 | $6M | 0.1% | 2026-Q1 |
| PLATINUM INVESTMENT MANAGEMENT LTD trimmed | 137,741 | $5M | 0.1% | 2026-Q1 |
| LMR Partners LLP new | 125,000 | $5M | 0.1% | 2026-Q1 |
| HRT FINANCIAL LP added | 116,992 | $5M | 0.1% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 111,956 | $4M | 0.1% | 2026-Q1 |
| Freestone Grove Partners LP new | 109,327 | $4M | 0.1% | 2026-Q1 |
| Legal & General Group Plc added | 110,207 | $4M | 0.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 107,778 | $4M | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 3,927,343 | $98M | 1.6% | 2025-Q4 stale |
| STEMPOINT CAPITAL LP added | 1,154,114 | $29M | 0.5% | 2025-Q4 stale |
| Sofinnova Investments, Inc. new | 1,104,274 | $28M | 0.4% | 2025-Q4 stale |
| Commodore Capital LP trimmed | 1,000,000 | $25M | 0.4% | 2025-Q4 stale |
| Tanager Wealth Management LLP | 598,044 | $15M | 0.2% | 2025-Q3 stale |
| Ensign Peak Advisors, Inc | 559,744 | $14M | 0.2% | 2025-Q3 stale |
| Polar Capital Holdings Plc added | 1,000,000 | $13M | 0.2% | 2025-Q2 stale |
| Driehaus Capital Management LLC added | 515,979 | $13M | 0.2% | 2025-Q3 stale |
| ARMISTICE CAPITAL, LLC added | 500,000 | $13M | 0.2% | 2025-Q4 stale |
| Walleye Capital LLC added | 441,160 | $11M | 0.2% | 2025-Q4 stale |
| Avidity Partners Management LP trimmed | 529,000 | $8M | 0.1% | 2025-Q1 stale |
| Saturn V Capital Management LP trimmed | 282,692 | $7M | 0.1% | 2025-Q4 stale |
| LORD, ABBETT & CO. LLC added | 446,196 | $6M | 0.1% | 2025-Q1 stale |
| WCM INVESTMENT MANAGEMENT, LLC new | 257,190 | $6M | 0.1% | 2025-Q4 stale |
| Harraden Circle Investments, LLC added | 569,831 | $6M | 0.1% | 2025-Q2 stale |
| Cutter Capital Management, LP added | 418,127 | $6M | 0.1% | 2025-Q1 stale |
| TANG CAPITAL MANAGEMENT LLC added | 200,000 | $5M | 0.1% | 2025-Q3 stale |
| BERKLEY W R CORP new | 445,195 | $5M | 0.1% | 2025-Q2 stale |
| Fort Baker Capital Management LP new | 374,683 | $4M | 0.1% | 2025-Q1 stale |
| Wildcat Capital Management, LLC new | 281,859 | $4M | 0.1% | 2025-Q1 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.