Who owns Zai Lab Limited (ZLAB)
Which tracked institutional funds hold ZLAB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ZLAB 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
24 tracked funds added or opened ZLAB while 36 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
ZLAB’s largest tracked holder by dollar value, Capital World Investors, 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 conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ZLAB 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 98 tracked filers holding ZLAB, 44 increased or opened the position and 86 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 ZLAB 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 7
- RA CAPITAL MANAGEMENT, L.P.$107M
- Aberdeen Group plc$4M
- Tidal Investments LLC$3M
- Seven Fleet Capital Management LP$1M
- BAROMETER CAPITAL MANAGEMENT INC.$1M
- XTX Topco Ltd$885K
Full exits 17
- Clearbridge Investments, LLC$32M
- WELLINGTON MANAGEMENT GROUP LLP$13M
- BANK OF AMERICA CORP /DE/$7M
- MARSHALL WACE, LLP$4M
- XY Capital Ltd$4M
- Campbell & CO Investment Adviser LLC$3M
Largest adds
- BAMCO INC /NY/$6M
- TWO SIGMA INVESTMENTS, LP$5M
- BlackRock, Inc.$5M
- ADAR1 Capital Management, LLC$5M
- Frazier Life Sciences Management, L.P.$2M
- CITADEL ADVISORS LLC$2M
Largest trims
- UBS Group AG$22M
- Legal & General Group Plc$6M
- PRICE T ROWE ASSOCIATES INC /MD/$5M
- JPMORGAN CHASE & CO$5M
- Walleye Capital LLC$5M
- FMR LLC$5M
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 |
|---|---|---|---|---|
| RTW INVESTMENTS, LP trimmed | 6,574,032 | $124M | 11.7% | 2026-Q1 |
| RA CAPITAL MANAGEMENT, L.P. added | 5,707,262 | $107M | 10.1% | 2026-Q1 |
| Frazier Life Sciences Management, L.P. | 1,902,320 | $36M | 3.4% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,688,632 | $32M | 3.0% | 2026-Q1 |
| BAMCO INC /NY/ added | 1,658,318 | $31M | 2.9% | 2026-Q1 |
| ADAR1 Capital Management, LLC added | 1,425,367 | $27M | 2.5% | 2026-Q1 |
| FMR LLC trimmed | 1,099,395 | $21M | 2.0% | 2026-Q1 |
| BlackRock, Inc. added | 865,146 | $16M | 1.5% | 2026-Q1 |
| Rock Springs Capital Management LP added | 814,707 | $15M | 1.4% | 2026-Q1 |
| C WorldWide Group Holding A/S | 510,000 | $10M | 0.9% | 2026-Q1 |
| UBS Group AG trimmed | 504,191 | $9M | 0.9% | 2026-Q1 |
| B Group, Inc. added | 450,646 | $8M | 0.8% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 393,167 | $7M | 0.7% | 2026-Q1 |
| NAN FUNG TRINITY (HK) LTD added | 346,466 | $7M | 0.6% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 309,723 | $6M | 0.5% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 291,639 | $5M | 0.5% | 2026-Q1 |
| SUPERSTRING CAPITAL MANAGEMENT LP added | 275,818 | $5M | 0.5% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 267,926 | $5M | 0.5% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 243,557 | $5M | 0.4% | 2026-Q1 |
| Aberdeen Group plc added | 237,739 | $4M | 0.4% | 2026-Q1 |
| Hennion & Walsh Asset Management, Inc. added | 214,323 | $4M | 0.4% | 2026-Q1 |
| Tidal Investments LLC added | 183,691 | $3M | 0.3% | 2026-Q1 |
| NEXTBio Capital Management LP added | 183,362 | $3M | 0.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 174,234 | $3M | 0.3% | 2026-Q1 |
| Privium Fund Management B.V. | 132,189 | $2M | 0.2% | 2026-Q1 |
| STATE STREET CORP trimmed | 118,813 | $2M | 0.2% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 116,560 | $2M | 0.2% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 110,587 | $2M | 0.2% | 2026-Q1 |
| Walleye Capital LLC trimmed | 94,678 | $2M | 0.2% | 2026-Q1 |
| MORGAN STANLEY trimmed | 94,397 | $2M | 0.2% | 2026-Q1 |
| ALPS ADVISORS INC trimmed | 90,848 | $2M | 0.2% | 2026-Q1 |
| Seven Fleet Capital Management LP new | 77,858 | $1M | 0.1% | 2026-Q1 |
| Legal & General Group Plc trimmed | 70,014 | $1M | 0.1% | 2026-Q1 |
| BAROMETER CAPITAL MANAGEMENT INC. added | 66,500 | $1M | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 65,248 | $1M | 0.1% | 2026-Q1 |
| DCF Advisers, LLC trimmed | 63,500 | $1M | 0.1% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 63,243 | $1M | 0.1% | 2026-Q1 |
| Virtus Investment Advisers, LLC added | 47,511 | $894K | 0.1% | 2026-Q1 |
| XTX Topco Ltd added | 47,072 | $885K | 0.1% | 2026-Q1 |
| TD Asset Management Inc trimmed | 37,440 | $704K | 0.1% | 2026-Q1 |
| WealthPlan Investment Management, LLC | 36,761 | $691K | 0.1% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 35,120 | $661K | 0.1% | 2026-Q1 |
| Hudson Bay Capital Management LP trimmed | 30,000 | $564K | 0.1% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 29,835 | $561K | 0.1% | 2026-Q1 |
| Capital World Investors added | 6,077,666 | $206M | 19.4% | 2025-Q3 stale |
| JANUS HENDERSON GROUP PLC trimmed | 2,049,537 | $69M | 6.6% | 2025-Q3 stale |
| Clearbridge Investments, LLC trimmed | 1,808,035 | $32M | 3.0% | 2025-Q4 stale |
| Allianz Asset Management GmbH trimmed | 815,000 | $28M | 2.6% | 2025-Q3 stale |
| MPM BIOIMPACT LLC | 745,060 | $25M | 2.4% | 2025-Q3 stale |
| JENNISON ASSOCIATES LLC trimmed | 592,332 | $21M | 2.0% | 2025-Q2 stale |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 387,362 | $14M | 1.3% | 2025-Q2 stale |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 752,858 | $13M | 1.3% | 2025-Q4 stale |
| Nan Fung Group Holdings Ltd added | 253,675 | $9M | 0.9% | 2025-Q1 stale |
| STEMPOINT CAPITAL LP added | 250,438 | $9M | 0.8% | 2025-Q2 stale |
| MY.Alpha Management HK Advisors Ltd new | 239,146 | $9M | 0.8% | 2025-Q1 stale |
| Candriam S.C.A. trimmed | 238,897 | $8M | 0.8% | 2025-Q2 stale |
| ORBIMED ADVISORS LLC trimmed | 231,000 | $8M | 0.8% | 2025-Q2 stale |
| BANK OF AMERICA CORP /DE/ added | 388,769 | $7M | 0.6% | 2025-Q4 stale |
| Woodline Partners LP trimmed | 198,509 | $7M | 0.6% | 2025-Q3 stale |
| HSBC HOLDINGS PLC added | 158,254 | $6M | 0.5% | 2025-Q2 stale |
| MARSHALL WACE, LLP added | 231,802 | $4M | 0.4% | 2025-Q4 stale |
| OLD MISSION CAPITAL LLC added | 107,997 | $4M | 0.4% | 2025-Q1 stale |
| XY Capital Ltd trimmed | 202,304 | $4M | 0.3% | 2025-Q4 stale |
| BALYASNY ASSET MANAGEMENT L.P. added | 104,349 | $4M | 0.3% | 2025-Q3 stale |
| MILLENNIUM MANAGEMENT LLC trimmed | 97,077 | $4M | 0.3% | 2025-Q1 stale |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 87,500 | $3M | 0.3% | 2025-Q2 stale |
| Campbell & CO Investment Adviser LLC added | 170,117 | $3M | 0.3% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC trimmed | 74,193 | $3M | 0.2% | 2025-Q2 stale |
| Jump Financial, LLC added | 66,003 | $2M | 0.2% | 2025-Q2 stale |
| AXA S.A. | 65,814 | $2M | 0.2% | 2025-Q2 stale |
| AXA Investment Managers S.A. new | 65,814 | $2M | 0.2% | 2025-Q3 stale |
| TEMA ETFS LLC added | 62,067 | $2M | 0.2% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 60,100 | $2M | 0.2% | 2025-Q2 stale |
| KEYSTONE INVESTORS PTE LTD new | 55,210 | $2M | 0.2% | 2025-Q2 stale |
| Qube Research & Technologies Ltd added | 107,651 | $2M | 0.2% | 2025-Q4 stale |
| Robeco Institutional Asset Management B.V. | 52,035 | $2M | 0.2% | 2025-Q1 stale |
| NINE MASTS CAPITAL Ltd added | 50,500 | $2M | 0.2% | 2025-Q1 stale |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 101,782 | $2M | 0.2% | 2025-Q4 stale |
| RAYMOND JAMES FINANCIAL INC trimmed | 92,837 | $2M | 0.2% | 2025-Q4 stale |
| HRT FINANCIAL LP added | 83,793 | $1M | 0.1% | 2025-Q4 stale |
| NEOS Investment Management LLC added | 75,165 | $1M | 0.1% | 2025-Q4 stale |
| Orion Portfolio Solutions, LLC added | 36,259 | $1M | 0.1% | 2025-Q1 stale |
| Long Corridor Asset Management Ltd | 65,800 | $1M | 0.1% | 2025-Q4 stale |
| Man Group plc trimmed | 31,170 | $1M | 0.1% | 2025-Q1 stale |
| Engineers Gate Manager LP trimmed | 30,671 | $1M | 0.1% | 2025-Q1 stale |
| ACADIAN ASSET MANAGEMENT LLC new | 29,693 | $1M | 0.1% | 2025-Q1 stale |
| TOWNSQUARE CAPITAL LLC added | 29,636 | $1M | 0.1% | 2025-Q1 stale |
| LANSDOWNE PARTNERS (UK) LLP added | 35,348 | $966K | 0.1% | 2025-Q1 stale |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO added | 23,820 | $833K | 0.1% | 2025-Q2 stale |
| Alberta Investment Management Corp trimmed | 22,000 | $769K | 0.1% | 2025-Q2 stale |
| M&T Bank Corp trimmed | 21,825 | $763K | 0.1% | 2025-Q2 stale |
| Russell Investments Group, Ltd. added | 22,200 | $752K | 0.1% | 2025-Q3 stale |
| Penserra Capital Management LLC trimmed | 20,978 | $733K | 0.1% | 2025-Q2 stale |
| MISSION WEALTH MANAGEMENT, LP new | 20,000 | $723K | 0.1% | 2025-Q1 stale |
| Bellevue Group AG added | 20,000 | $723K | 0.1% | 2025-Q1 stale |
| Schonfeld Strategic Advisors LLC trimmed | 40,005 | $706K | 0.1% | 2025-Q4 stale |
| GTS SECURITIES LLC added | 19,465 | $660K | 0.1% | 2025-Q3 stale |
| DekaBank Deutsche Girozentrale | 36,648 | $647K | 0.1% | 2025-Q4 stale |
| MML INVESTORS SERVICES, LLC trimmed | 34,421 | $607K | 0.1% | 2025-Q4 stale |
| ALLIANCEBERNSTEIN L.P. trimmed | 16,514 | $560K | 0.1% | 2025-Q3 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.