ZLAB Institutional Ownership & Shareholders
ZAI LAB LTD-ADR (ZLAB) is currently held by 85 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $821.28M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Rtw Investments, Lp is currently the largest disclosed institutional shareholder of ZLAB tracked by InsiderSet, reporting ownership valued at approximately $124.91M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $145.09M, representing an estimated gain of +16.16% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 79% of the total disclosed ZLAB value among the investors covered in this analysis. Major shareholders include Rtw Investments, Lp, Tcg Crossover Management, Llc, Ra Capital Management, L.P., and several other long-term asset managers with concentrated positions in ZAI LAB LTD-ADR (ZLAB).
This page ranks the largest institutional ZLAB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
85
Total Reported Value
$821.28M
Largest Holder
Rtw Investments, Lp
Largest Position
$124.91M
Insider Transactions (90d)
7
Latest Filing Quarter
Q2 2026
New Institutional Positions
149
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Rtw Investments, Lp | 1.07% | 6,574,032 | $124,906,608 | $145,088,886 | +$20,182,278 | +16.16% | |
| Tcg Crossover Management, Llc | 2.80% | 6,137,627 | $116,614,913 | $135,457,428 | +$18,842,515 | +16.16% | |
| Ra Capital Management, L.P. | 0.95% | 5,743,533 | $109,127,127 | $126,759,773 | +$17,632,646 | +16.16% | |
| Adar1 Capital Management, Llc | 3.01% | 3,369,034 | $64,011,646 | $74,354,580 | +$10,342,934 | +16.16% | |
| Fmr Llc | 0.00% | 2,815,214 | $53,489,066 | $62,131,773 | +$8,642,707 | +16.16% | |
| Goldman Sachs Group Inc | 0.00% | 2,315,480 | $43,994,120 | $51,102,644 | +$7,108,524 | +16.16% | |
| Woodline Partners Lp | 0.13% | 2,207,293 | $41,938,567 | $48,714,957 | +$6,776,390 | +16.16% | |
| Frazier Life Sciences Management, L.P. | 0.79% | 1,902,320 | $36,144,080 | $41,984,202 | +$5,840,122 | +16.16% | |
| Bamco Inc | 0.05% | 1,623,694 | $30,850,186 | $35,834,927 | +$4,984,741 | +16.16% | |
| Two Sigma Investments, Lp | 0.02% | 1,299,394 | $24,688,486 | $28,677,626 | +$3,989,140 | +16.16% | |
| Citadel Advisors Llc | 0.01% | 1,284,706 | $24,409,414 | $28,353,461 | +$3,944,047 | +16.16% | |
| Rock Springs Capital Management Lp | 0.76% | 814,707 | $15,479,433 | $17,980,583 | +$2,501,150 | +16.16% | |
| Blackrock, Inc. | 0.00% | 664,462 | $12,624,778 | $14,664,676 | +$2,039,898 | +16.16% | |
| C Worldwide Group Holding A/S | 0.23% | 510,000 | $9,690,000 | $11,255,700 | +$1,565,700 | +16.16% | |
| Jane Street Group, Llc | 0.01% | 476,541 | $9,054,279 | $10,517,260 | +$1,462,981 | +16.16% | |
| B Group, Inc. | 4.86% | 450,646 | $8,562,274 | $9,945,757 | +$1,383,483 | +16.16% | |
| Schroder Investment Management Group | 0.01% | 393,167 | $7,238,204 | $8,677,196 | +$1,438,992 | +19.88% | |
| Hennion & Walsh Asset Management, Inc. | 0.20% | 263,097 | $6,929,975 | $5,806,551 | -$1,123,424 | -16.21% | |
| Nan Fung Trinity (Hk) Ltd | 0.65% | 346,466 | $6,582,854 | $7,646,505 | +$1,063,651 | +16.16% | |
| Aberdeen Group Plc | 0.01% | 311,294 | $5,914,586 | $6,870,259 | +$955,673 | +16.16% | |
| Citigroup Inc | 0.00% | 300,775 | $5,714,725 | $6,638,104 | +$923,379 | +16.16% | |
| Spruce Street Capital Lp | 1.04% | 279,110 | $5,303,090 | $6,159,958 | +$856,868 | +16.16% | |
| Ameriprise Financial Inc | 0.00% | 253,171 | $4,810,249 | $5,587,484 | +$777,235 | +16.16% | |
| Bnp Paribas Asset Management Holding S.A. | 0.00% | 246,982 | $4,692,658 | $5,450,893 | +$758,235 | +16.16% | |
| Hudson Bay Capital Management Lp | 0.02% | 215,000 | $4,085,000 | $4,745,050 | +$660,050 | +16.16% | |
| Nantahala Capital Management, Llc | 0.23% | 200,000 | $3,800,000 | $4,414,000 | +$614,000 | +16.16% | |
| Nextbio Capital Management Lp | 1.60% | 183,362 | $3,483,878 | $4,046,799 | +$562,921 | +16.16% | |
| Superstring Capital Management Lp | 1.87% | 155,813 | $2,960,447 | $3,438,793 | +$478,346 | +16.16% | |
| Tidal Investments Llc | 0.01% | 153,996 | $2,925,924 | $3,398,692 | +$472,768 | +16.16% | |
| Seven Fleet Capital Management Lp | 0.48% | 136,016 | $2,924,756 | $3,001,873 | +$77,117 | +2.64% | |
| Marshall Wace, Llp | 0.00% | 147,217 | $2,797,123 | $3,249,079 | +$451,956 | +16.16% | |
| D. E. Shaw & Co., Inc. | 0.00% | 141,158 | $2,682,002 | $3,115,357 | +$433,355 | +16.16% | |
| Privium Fund Management B.V. | 0.43% | 122,189 | $2,321,591 | $2,696,711 | +$375,120 | +16.16% | |
| State Street Corp | 0.00% | 120,846 | $2,296,074 | $2,667,071 | +$370,997 | +16.16% | |
| Alps Advisors Inc | 0.01% | 110,431 | $2,098,189 | $2,437,212 | +$339,023 | +16.16% | |
| Dimensional Fund Advisors Lp | 0.00% | 101,997 | $1,934,621 | $2,251,074 | +$316,453 | +16.36% | |
| Susquehanna International Group, Llp | 0.00% | 76,565 | $1,454,735 | $1,689,790 | +$235,055 | +16.16% | |
| Legal & General Group Plc | 0.00% | 71,461 | $1,358,116 | $1,577,144 | +$219,028 | +16.13% | |
| Ubs Group Ag | 0.00% | 69,454 | $1,319,626 | $1,532,850 | +$213,224 | +16.16% | |
| Virtus Investment Advisers, Llc | 0.30% | 68,124 | $1,294,356 | $1,503,497 | +$209,141 | +16.16% | |
| Headlands Technologies Llc | 0.14% | 68,010 | $1,292,190 | $1,500,981 | +$208,791 | +16.16% | |
| Morgan Stanley | 0.00% | 65,401 | $1,242,619 | $1,443,400 | +$200,781 | +16.16% | |
| Dcf Advisers, Llc | 0.32% | 63,500 | $1,206,500 | $1,401,445 | +$194,945 | +16.16% | |
| Wealthplan Investment Management, Llc | 0.05% | 36,783 | $968,864 | $811,801 | -$157,063 | -16.21% | |
| Quadrature Capital Ltd | 0.01% | 39,028 | $741,532 | $861,348 | +$119,816 | +16.16% | |
| Northern Trust Corp | 0.00% | 23,979 | $455,601 | $529,217 | +$73,616 | +16.16% | |
| Geode Capital Management, Llc | 0.00% | 23,879 | $453,701 | $527,010 | +$73,309 | +16.16% | |
| Invesco Ltd. | 0.00% | 22,397 | $425,543 | $494,302 | +$68,759 | +16.16% | |
| Xtx Topco Ltd | 0.00% | 18,349 | $348,631 | $404,962 | +$56,331 | +16.16% | |
| Schonfeld Strategic Advisors Llc | 0.00% | 15,496 | $294,424 | $341,997 | +$47,573 | +16.16% |
Frequently asked questions about ZLAB
Who are the largest institutional holders of ZLAB?
The largest institutional holders of ZLAB reported in the latest SEC Form 13F filings include Rtw Investments, Lp, Tcg Crossover Management, Llc, Ra Capital Management, L.P., Adar1 Capital Management, Llc, and Fmr Llc. InsiderSet ranks institutional holders by their latest reported ZLAB position.
What is ZLAB institutional ownership?
This page tracks ZLAB positions reported by institutional investment managers through SEC Form 13F. ZAI LAB LTD-ADR (ZLAB) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ZLAB?
InsiderSet currently tracks 85 institutional managers reporting ZLAB holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of ZLAB shareholders.
How much ZLAB stock do institutions own?
Institutional investment managers disclosed approximately $821.28M in ZLAB holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ZLAB institutional ownership last updated?
The latest ZLAB institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional ZLAB holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its ZLAB position after the reporting date.
Are institutions buying or selling ZLAB?
Institutional buying and selling can be analyzed by comparing ZLAB positions across consecutive 13F reporting periods. InsiderSet's ZLAB Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ZLAB ownership changes.
How has ZLAB institutional ownership changed over time?
InsiderSet tracks ZLAB institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.