ZAI LAB LTD-ADR (ZLAB) Top Institutional Shareholders
ZAI LAB LTD-ADR (ZLAB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $549.00M in ZLAB holdings during the latest filing period.
Rtw Investments, Lp is currently the largest disclosed institutional shareholder of ZLAB tracked by InsiderSet, reporting ownership valued at approximately $123.66M in its March 31, 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 $117.54M, representing an estimated loss of -4.94% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 81% of the total disclosed ZLAB value among the investors covered in this analysis. Major shareholders include Rtw Investments, Lp, Ra Capital Management, L.P., Frazier Life Sciences 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
99
Total Reported Value
$549.00M
Largest Holder
Rtw Investments, Lp
Largest Position
$123.66M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
143
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Rtw Investments, Lp | 1.23% | 6,574,032 | $123,657,542 | $117,543,692 | -$6,113,850 | -4.94% | |
| Ra Capital Management, L.P. | 1.14% | 5,707,262 | $107,353,598 | $102,045,845 | -$5,307,753 | -4.94% | |
| Frazier Life Sciences Management, L.P. | 0.92% | 1,902,320 | $35,782,639 | $34,013,482 | -$1,769,157 | -4.94% | |
| Storebrand Asset Management As | 0.01% | 399,188 | $32,955,980 | $7,137,481 | -$25,818,499 | -78.34% | |
| Citadel Advisors Llc | 0.02% | 1,688,632 | $31,763,167 | $30,192,740 | -$1,570,427 | -4.94% | |
| Bamco Inc | 0.09% | 1,658,318 | $31,192,962 | $29,650,726 | -$1,542,236 | -4.94% | |
| Adar1 Capital Management, Llc | 1.61% | 1,425,367 | $26,811,153 | $25,485,562 | -$1,325,591 | -4.94% | |
| Fmr Llc | 0.00% | 1,262,391 | $23,745,575 | $22,571,551 | -$1,174,024 | -4.94% | |
| Blackrock, Inc. | 0.00% | 865,146 | $16,273,397 | $15,468,810 | -$804,587 | -4.94% | |
| Rock Springs Capital Management Lp | 0.90% | 814,707 | $15,324,639 | $14,566,961 | -$757,678 | -4.94% | |
| Ubs Group Ag | 0.00% | 504,191 | $9,483,833 | $9,014,935 | -$468,898 | -4.94% | |
| B Group, Inc. | 6.28% | 450,646 | $8,476,651 | $8,057,550 | -$419,101 | -4.94% | |
| Schroder Investment Management Group | 0.01% | 393,167 | $7,018,031 | $7,029,826 | +$11,795 | +0.17% | |
| Nan Fung Trinity (Hk) Ltd | 0.72% | 346,466 | $6,517,025 | $6,194,812 | -$322,213 | -4.94% | |
| Two Sigma Investments, Lp | 0.00% | 309,723 | $5,825,890 | $5,537,847 | -$288,043 | -4.94% | |
| Superstring Capital Management Lp | 3.71% | 275,818 | $5,188,137 | $4,931,626 | -$256,511 | -4.94% | |
| Jane Street Group, Llc | 0.01% | 267,926 | $5,039,687 | $4,790,517 | -$249,170 | -4.94% | |
| Ameriprise Financial Inc | 0.00% | 243,557 | $4,581,308 | $4,354,799 | -$226,509 | -4.94% | |
| Aberdeen Group Plc | 0.01% | 237,739 | $4,471,871 | $4,250,773 | -$221,098 | -4.94% | |
| Hennion & Walsh Asset Management, Inc. | 0.14% | 214,323 | $4,031,416 | $3,832,095 | -$199,321 | -4.94% | |
| Tidal Investments Llc | 0.01% | 183,691 | $3,455,228 | $3,284,395 | -$170,833 | -4.94% | |
| Nextbio Capital Management Lp | 1.60% | 183,362 | $3,449,039 | $3,278,513 | -$170,526 | -4.94% | |
| Dimensional Fund Advisors Lp | 0.00% | 174,234 | $3,271,937 | $3,115,304 | -$156,633 | -4.79% | |
| Privium Fund Management B.V. | 0.52% | 132,189 | $2,486,475 | $2,363,539 | -$122,936 | -4.94% | |
| State Street Corp | 0.00% | 118,813 | $2,234,873 | $2,124,376 | -$110,497 | -4.94% | |
| Bnp Paribas Asset Management Holding S.A. | 0.00% | 116,560 | $2,192,494 | $2,084,093 | -$108,401 | -4.94% | |
| Goldman Sachs Group Inc | 0.00% | 110,587 | $2,080,141 | $1,977,296 | -$102,845 | -4.94% | |
| Walleye Capital Llc | 0.01% | 94,678 | $1,780,893 | $1,692,843 | -$88,050 | -4.94% | |
| Morgan Stanley | 0.00% | 94,397 | $1,775,616 | $1,687,818 | -$87,798 | -4.94% | |
| Alps Advisors Inc | 0.01% | 90,848 | $1,708,851 | $1,624,362 | -$84,489 | -4.94% | |
| Seven Fleet Capital Management Lp | 0.46% | 77,858 | $1,464,509 | $1,392,101 | -$72,408 | -4.94% | |
| Legal & General Group Plc | 0.00% | 70,014 | $1,316,963 | $1,251,850 | -$65,113 | -4.94% | |
| Barometer Capital Management Inc. | 0.43% | 66,500 | $1,250,865 | $1,189,020 | -$61,845 | -4.94% | |
| Susquehanna International Group, Llp | 0.00% | 65,248 | $1,227,315 | $1,166,634 | -$60,681 | -4.94% | |
| Dcf Advisers, Llc | 0.45% | 63,500 | $1,194,435 | $1,135,380 | -$59,055 | -4.94% | |
| D. E. Shaw & Co., Inc. | 0.00% | 63,243 | $1,189,601 | $1,130,785 | -$58,816 | -4.94% | |
| Virtus Investment Advisers, Llc | 0.25% | 47,511 | $893,682 | $849,497 | -$44,185 | -4.94% | |
| Xtx Topco Ltd | 0.02% | 47,072 | $885,424 | $841,647 | -$43,777 | -4.94% | |
| Td Asset Management Inc | 0.00% | 37,440 | $704,246 | $669,427 | -$34,819 | -4.94% | |
| Wealthplan Investment Management, Llc | 0.04% | 36,761 | $691,474 | $657,287 | -$34,187 | -4.94% | |
| Point72 Asset Management, L.P. | 0.00% | 35,120 | $660,607 | $627,946 | -$32,661 | -4.94% | |
| Hudson Bay Capital Management Lp | 0.00% | 30,000 | $564,300 | $536,400 | -$27,900 | -4.94% | |
| Manufacturers Life Insurance Company, The | 0.00% | 29,835 | $561,196 | $533,450 | -$27,746 | -4.94% | |
| Headlands Technologies Llc | 0.06% | 28,109 | $528,730 | $502,589 | -$26,141 | -4.94% | |
| Invesco Ltd. | 0.00% | 26,558 | $499,556 | $474,857 | -$24,699 | -4.94% | |
| Northern Trust Corp | 0.00% | 25,709 | $483,586 | $459,677 | -$23,909 | -4.94% | |
| Legacy Wealth Asset Management, Llc | 0.11% | 24,925 | $468,839 | $445,659 | -$23,180 | -4.94% | |
| Envestnet Asset Management Inc | 0.00% | 24,781 | $466,131 | $443,084 | -$23,047 | -4.94% | |
| Geode Capital Management, Llc | 0.00% | 23,879 | $449,163 | $426,957 | -$22,206 | -4.94% | |
| Squarepoint Ops Llc | 0.00% | 19,463 | $366,099 | $347,998 | -$18,101 | -4.94% |
Frequently asked questions about ZLAB
Who owns the most ZLAB stock?
The largest holders of ZLAB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ZAI LAB LTD-ADR (ZLAB).
Is ZLAB widely held by superinvestors?
Many widely followed stocks like ZLAB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ZLAB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.