ZLAB — Institutional owners (13F)
Institutions that report holding this stock in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
| Institution | Value | Shares | % of tracked 13F | Type |
|---|---|---|---|---|
| RTW INVESTMENTS, LP | $124,906,608 | 6,574,032 | 15.35% | Shares |
| TCG Crossover Management, LLC | $116,614,913 | 6,137,627 | 14.33% | Shares |
| RA CAPITAL MANAGEMENT, L.P. | $109,127,127 | 5,743,533 | 13.41% | Shares |
| ADAR1 Capital Management, LLC | $64,011,646 | 3,369,034 | 7.87% | Shares |
| FMR LLC | $53,489,066 | 2,815,214 | 6.57% | Shares |
| GOLDMAN SACHS GROUP INC | $43,994,120 | 2,315,480 | 5.41% | Shares |
| Woodline Partners LP | $41,938,567 | 2,207,293 | 5.15% | Shares |
| Frazier Life Sciences Management, L.P. | $36,144,080 | 1,902,320 | 4.44% | Shares |
| BAMCO INC /NY/ | $30,850,186 | 1,623,694 | 3.79% | Shares |
| TWO SIGMA INVESTMENTS, LP | $24,688,486 | 1,299,394 | 3.03% | Shares |
| CITADEL ADVISORS LLC | $24,409,414 | 1,284,706 | 3.00% | Shares |
| Rock Springs Capital Management LP | $15,479,433 | 814,707 | 1.90% | Shares |
| BlackRock, Inc. | $12,624,778 | 664,462 | 1.55% | Shares |
| JANE STREET GROUP, LLC | $9,054,279 | 476,541 | 1.11% | Shares |
| B Group, Inc. | $8,562,274 | 450,646 | 1.05% | Shares |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $7,238,204 | 393,167 | 0.89% | Shares |
| NAN FUNG TRINITY (HK) LTD | $6,582,854 | 346,466 | 0.81% | Shares |
| Aberdeen Group plc | $5,914,586 | 311,294 | 0.73% | Shares |
| CITIGROUP INC | $5,714,725 | 300,775 | 0.70% | Shares |
| Spruce Street Capital LP | $5,303,090 | 279,110 | 0.65% | Shares |
| AMERIPRISE FINANCIAL INC | $4,810,249 | 253,171 | 0.59% | Shares |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $4,692,658 | 246,982 | 0.58% | Shares |
| Hudson Bay Capital Management LP | $4,085,000 | 215,000 | 0.50% | Shares |
| JANE STREET GROUP, LLC | $3,864,600 | 203,400 | 0.47% | Put option |
| Nantahala Capital Management, LLC | $3,800,000 | 200,000 | 0.47% | Shares |
| NEXTBio Capital Management LP | $3,483,878 | 183,362 | 0.43% | Shares |
| SUPERSTRING CAPITAL MANAGEMENT LP | $2,960,447 | 155,813 | 0.36% | Shares |
| Seven Fleet Capital Management LP | $2,924,756 | 136,016 | 0.36% | Shares |
| MARSHALL WACE, LLP | $2,797,123 | 147,217 | 0.34% | Shares |
| D. E. Shaw & Co., Inc. | $2,682,002 | 141,158 | 0.33% | Shares |
| Privium Fund Management B.V. | $2,321,591 | 122,189 | 0.29% | Shares |
| STATE STREET CORP | $2,296,074 | 120,846 | 0.28% | Shares |
| AXA Investment Managers S.A. | $2,230,436 | 65,814 | 0.27% | Shares |
| ALPS ADVISORS INC | $2,098,189 | 110,431 | 0.26% | Shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2,086,200 | 109,800 | 0.26% | Put option |
| DIMENSIONAL FUND ADVISORS LP | $1,934,621 | 101,997 | 0.24% | Shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,454,735 | 76,565 | 0.18% | Shares |
| Legal & General Group Plc | $1,358,116 | 71,461 | 0.17% | Shares |
| UBS Group AG | $1,319,626 | 69,454 | 0.16% | Shares |
| Orion Portfolio Solutions, LLC | $1,310,400 | 36,259 | 0.16% | Shares |
| Virtus Investment Advisers, LLC | $1,294,356 | 68,124 | 0.16% | Shares |
| Headlands Technologies LLC | $1,292,190 | 68,010 | 0.16% | Shares |
| MORGAN STANLEY | $1,242,619 | 65,401 | 0.15% | Shares |
| DCF Advisers, LLC | $1,206,500 | 63,500 | 0.15% | Shares |
| CITADEL ADVISORS LLC | $953,800 | 50,200 | 0.12% | Put option |
| Quadrature Capital Ltd | $741,532 | 39,028 | 0.09% | Shares |
| WOLVERINE TRADING, LLC | $714,581 | 21,700 | 0.09% | Put option |
| WealthPlan Investment Management, LLC | $698,459 | 36,761 | 0.09% | Shares |
| NORTHERN TRUST CORP | $455,601 | 23,979 | 0.06% | Shares |
| GEODE CAPITAL MANAGEMENT, LLC | $453,701 | 23,879 | 0.06% | Shares |
| Invesco Ltd. | $425,543 | 22,397 | 0.05% | Shares |
| NJ State Employees Deferred Compensation Plan | $382,957 | 11,300 | 0.05% | Shares |
| XTX Topco Ltd | $348,631 | 18,349 | 0.04% | Shares |
| Schonfeld Strategic Advisors LLC | $294,424 | 15,496 | 0.04% | Shares |
| Squarepoint Ops LLC | $291,004 | 15,316 | 0.04% | Shares |
| Erste Asset Management GmbH | $277,991 | 15,100 | 0.03% | Shares |
| H D Vest Advisory Services | $275,494 | 7,878 | 0.03% | Shares |
| Vanguard Personalized Indexing Management, LLC | $211,489 | 11,131 | 0.03% | Shares |
| Persistent Asset Partners Ltd | $209,760 | 11,040 | 0.03% | Shares |
| TWO SIGMA SECURITIES, LLC | $192,546 | 10,134 | 0.02% | Shares |
| JPMORGAN CHASE & CO | $127,342 | 6,917 | 0.02% | Shares |
| China Universal Asset Management Co., Ltd. | $99,560 | 5,240 | 0.01% | Shares |
| GROUP ONE TRADING LLC | $96,729 | 5,091 | 0.01% | Shares |
| Mirae Asset Global Investments Co., Ltd. | $74,594 | 3,926 | 0.01% | Shares |
| SIMPLEX TRADING, LLC | $50,483 | 2,657 | 0.01% | Shares |
| ROYAL BANK OF CANADA | $32,000 | 1,697 | 0.00% | Shares |
| Tower Research Capital LLC (TRC) | $19,190 | 1,010 | 0.00% | Shares |
| US BANCORP \DE\ | $18,240 | 960 | 0.00% | Shares |
| BNP PARIBAS FINANCIAL MARKETS | $14,592 | 768 | 0.00% | Shares |
| GF FUND MANAGEMENT CO. LTD. | $13,851 | 729 | 0.00% | Shares |
| Farther Finance Advisors, LLC | $13,064 | 690 | 0.00% | Shares |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $11,813 | 628 | 0.00% | Shares |
| C WorldWide Group Holding A/S | $9,690 | 510,000 | 0.00% | Shares |
| Federation des caisses Desjardins du Quebec | $5,700 | 300 | 0.00% | Shares |
| BARCLAYS PLC | $5,548 | 292 | 0.00% | Shares |
| CWM, LLC | $5,436 | 289 | 0.00% | Shares |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $3,895 | 205 | 0.00% | Shares |
| Arax Advisory Partners | $3,819 | 201 | 0.00% | Shares |
| ASSETMARK, INC | $2,945 | 155 | 0.00% | Shares |
| Quent Capital, LLC | $2,850 | 150 | 0.00% | Shares |
| DEUTSCHE BANK AG\ | $2,793 | 147 | 0.00% | Shares |
| OSAIC HOLDINGS, INC. | $2,660 | 140 | 0.00% | Shares |
| Smartleaf Asset Management LLC | $2,430 | 132 | 0.00% | Shares |
| EverSource Wealth Advisors, LLC | $2,223 | 117 | 0.00% | Shares |
| North Star Investment Management Corp. | $1,843 | 97 | 0.00% | Shares |
| Ameritas Advisory Services, LLC | $1,444 | 76 | 0.00% | Shares |
| AMERIFLEX GROUP, INC. | $1,178 | 62 | 0.00% | Shares |
| WELLS FARGO & COMPANY/MN | $1,140 | 60 | 0.00% | Shares |
| SBI Securities Co., Ltd. | $760 | 40 | 0.00% | Shares |
| Cornerstone Financial Management LLC | $608 | 32 | 0.00% | Shares |
| Caitong International Asset Management Co., Ltd | $494 | 26 | 0.00% | Shares |
| Bell Investment Advisors, Inc | $494 | 26 | 0.00% | Shares |
| PNC Financial Services Group, Inc. | $494 | 26 | 0.00% | Shares |
| Stone House Investment Management, LLC | $418 | 22 | 0.00% | Shares |
| Blue Trust, Inc. | $95 | 5 | 0.00% | Shares |
| Larson Financial Group LLC | $76 | 4 | 0.00% | Shares |
| BESSEMER GROUP INC | $1 | 60 | 0.00% | Shares |