Who owns Zura Bio (ZURA)
Which tracked institutional funds hold ZURA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ZURA 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 ZURA while 18 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
ZURA’s largest tracked holder by dollar value, MONTANOVA CAPITAL, LLC, sizes it at 1.2% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.2pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ZURA 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 95 tracked filers holding ZURA, 60 increased or opened the position and 43 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 ZURA 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 5
- MPM BIOIMPACT LLC$26M
- VANGUARD PORTFOLIO MANAGEMENT LLC$2M
- AMERIPRISE FINANCIAL INC$2M
- Nuveen, LLC$745K
- Bank of New York Mellon Corp$734K
Full exits 9
- Cormorant Asset Management, LP$9M
- Point72 Asset Management, L.P.$5M
- MARSHALL WACE, LLP$5M
- SILVERARC CAPITAL MANAGEMENT, LLC$3M
- Qube Research & Technologies Ltd$3M
- JANE STREET GROUP, LLC$2M
Largest adds
- BlackRock, Inc.$19M
- Saturn V Capital Management LP$8M
- ADAR1 Capital Management, LLC$7M
- GEODE CAPITAL MANAGEMENT, LLC$6M
- STATE STREET CORP$5M
- Vestal Point Capital, LP$4M
Largest trims
- Pfizer Inc$14M
- MILLENNIUM MANAGEMENT LLC$8M
- Affinity Asset Advisors, LLC$7M
- MORGAN STANLEY$2M
- JPMORGAN CHASE & CO$809K
- WELLINGTON MANAGEMENT GROUP LLP$465K
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 |
|---|---|---|---|---|
| MONTANOVA CAPITAL, LLC added | 9,443,001 | $56M | 12.3% | 2026-Q2 |
| Venrock Adviser, LLC | 6,434,990 | $38M | 8.4% | 2026-Q2 |
| MPM BIOIMPACT LLC new | 4,472,843 | $26M | 5.8% | 2026-Q2 |
| GREAT POINT PARTNERS LLC | 4,215,930 | $25M | 5.5% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 4,354,715 | $25M | 5.4% | 2026-Q2 |
| BRAIDWELL LP trimmed | 3,980,295 | $23M | 5.2% | 2026-Q2 |
| Siren, L.L.C. | 3,734,866 | $22M | 4.9% | 2026-Q2 |
| BlackRock, Inc. added | 3,614,695 | $21M | 4.7% | 2026-Q2 |
| Commodore Capital LP | 3,250,000 | $19M | 4.2% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2,750,000 | $16M | 3.6% | 2026-Q2 |
| Saturn V Capital Management LP added | 2,101,119 | $12M | 2.7% | 2026-Q2 |
| QVT Financial LP added | 1,895,153 | $11M | 2.5% | 2026-Q2 |
| ADAR1 Capital Management, LLC added | 1,759,295 | $10M | 2.3% | 2026-Q2 |
| ARMISTICE CAPITAL, LLC added | 1,636,000 | $10M | 2.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,584,209 | $9M | 2.1% | 2026-Q2 |
| Affinity Asset Advisors, LLC trimmed | 1,464,303 | $9M | 1.9% | 2026-Q2 |
| STEMPOINT CAPITAL LP added | 1,368,215 | $8M | 1.8% | 2026-Q2 |
| Ikarian Capital, LLC added | 1,218,492 | $7M | 1.6% | 2026-Q2 |
| EcoR1 Capital, LLC | 1,179,715 | $7M | 1.5% | 2026-Q2 |
| Vestal Point Capital, LP added | 1,173,956 | $7M | 1.5% | 2026-Q2 |
| STATE STREET CORP added | 1,001,637 | $6M | 1.3% | 2026-Q2 |
| Boxer Capital Management, LLC | 900,000 | $5M | 1.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 747,352 | $4M | 1.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 573,946 | $3M | 0.7% | 2026-Q2 |
| FMR LLC trimmed | 528,284 | $3M | 0.7% | 2026-Q2 |
| MORGAN STANLEY trimmed | 505,953 | $3M | 0.7% | 2026-Q2 |
| NORTHERN TRUST CORP added | 500,086 | $3M | 0.6% | 2026-Q2 |
| Pfizer Inc trimmed | 538,841 | $3M | 0.6% | 2026-Q2 |
| Foresite Capital Management VI LLC | 450,000 | $3M | 0.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 407,532 | $2M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 406,450 | $2M | 0.5% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 379,177 | $2M | 0.5% | 2026-Q2 |
| KVP Capital Advisors, LP | 373,128 | $2M | 0.5% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 350,902 | $2M | 0.5% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 321,702 | $2M | 0.4% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 300,719 | $2M | 0.4% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 282,207 | $2M | 0.4% | 2026-Q2 |
| UBS Group AG added | 265,314 | $2M | 0.3% | 2026-Q2 |
| Jump Financial, LLC added | 231,600 | $1M | 0.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 174,395 | $1M | 0.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 137,639 | $812K | 0.2% | 2026-Q2 |
| XTX Topco Ltd added | 136,224 | $804K | 0.2% | 2026-Q2 |
| Alberta Investment Management Corp | 133,200 | $786K | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 126,204 | $745K | 0.2% | 2026-Q2 |
| Bank of New York Mellon Corp added | 124,365 | $734K | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 105,746 | $624K | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 97,033 | $572K | 0.1% | 2026-Q2 |
| ALPS ADVISORS INC added | 96,414 | $569K | 0.1% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 85,348 | $504K | 0.1% | 2026-Q2 |
| Verdad Advisers, LP trimmed | 66,919 | $395K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 65,888 | $389K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 59,437 | $351K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 58,648 | $346K | 0.1% | 2026-Q2 |
| RBF Capital, LLC | 58,193 | $343K | 0.1% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 55,129 | $325K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 53,776 | $317K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 48,385 | $286K | 0.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 40,461 | $239K | 0.1% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 38,800 | $229K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 36,749 | $217K | 0.0% | 2026-Q2 |
| Invesco Ltd. new | 32,029 | $189K | 0.0% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 31,740 | $189K | 0.0% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 28,820 | $170K | 0.0% | 2026-Q2 |
| EntryPoint Capital, LLC new | 28,806 | $170K | 0.0% | 2026-Q2 |
| CITIGROUP INC added | 27,763 | $164K | 0.0% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 27,164 | $160K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 27,030 | $159K | 0.0% | 2026-Q2 |
| Forefront Analytics, LLC added | 26,968 | $159K | 0.0% | 2026-Q2 |
| Mariner, LLC trimmed | 23,102 | $136K | 0.0% | 2026-Q2 |
| INSIGNEO ADVISORY SERVICES, LLC trimmed | 20,650 | $122K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey added | 17,387 | $103K | 0.0% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 17,042 | $101K | 0.0% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC new | 16,916 | $100K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 16,821 | $99K | 0.0% | 2026-Q2 |
| China Universal Asset Management Co., Ltd. trimmed | 16,000 | $94K | 0.0% | 2026-Q2 |
| Abel Hall, LLC added | 13,229 | $78K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 13,200 | $78K | 0.0% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 11,616 | $69K | 0.0% | 2026-Q2 |
| State of Wyoming added | 9,878 | $58K | 0.0% | 2026-Q2 |
| Allworth Financial LP trimmed | 5,788 | $34K | 0.0% | 2026-Q2 |
| Legal & General Group Plc added | 5,726 | $34K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. added | 5,350 | $32K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. new | 4,714 | $28K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) trimmed | 3,383 | $20K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 2,819 | $17K | 0.0% | 2026-Q2 |
| SIMPLEX TRADING, LLC trimmed | 2,640 | $16K | 0.0% | 2026-Q2 |
| Steward Partners Investment Advisory, LLC | 1,000 | $6K | 0.0% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 812 | $5K | 0.0% | 2026-Q2 |
| NISA INVESTMENT ADVISORS, LLC | 702 | $4K | 0.0% | 2026-Q2 |
| Quarry LP new | 323 | $2K | 0.0% | 2026-Q2 |
| US BANCORP \DE\ | 318 | $2K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC added | 207 | $1K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. trimmed | 77 | $454 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd added | 50 | $295 | 0.0% | 2026-Q2 |
| Arax Advisory Partners | 24 | $142 | 0.0% | 2026-Q2 |
| Cormorant Asset Management, LP new | 1,450,000 | $9M | 1.9% | 2026-Q1 stale (1 quarter behind) |
| Point72 Asset Management, L.P. added | 872,662 | $5M | 1.1% | 2026-Q1 stale (1 quarter behind) |
| MARSHALL WACE, LLP trimmed | 844,404 | $5M | 1.1% | 2026-Q1 stale (1 quarter behind) |
| SILVERARC CAPITAL MANAGEMENT, LLC trimmed | 560,651 | $3M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC added | 568,118 | $3M | 0.7% | 2025-Q4 stale (2 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.