13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Pharmaceutical PreparationsCyclicalNet sold
ZLAB

ZAI LAB LTD

110 institutions still hold ZAI LAB LTD as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 98887Q104·Pharmaceutical Preparations·110 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 2.8%
vs prior quarter
13F value held
$480M
61.0% inst. owned
of float
Holders
110
+82 QoQ
filers reporting
Activity
+42 / −60
+809 added · −732 reduced
this quarter
Concentration
25.78%
RTW INVESTMENTS, LP #1
top holder share
AI Holders Summary · Q1 2026

110 institutions reported ZLAB in Q1 2026. RTW INVESTMENTS, LP leads at 25.8% of the visible book. +82 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
RTW INVESTMENTS, LP
CIK 0001493215
$124M6.6M1.23%Q1 202602
RA CAPITAL MANAGEMENT, L.P.
CIK 0001346824
$107M5.7M1.14%Q1 202603
Frazier Life Sciences Management, L.P.
CIK 0001892134
$36M1.9M0.92%Q1 202604
BAMCO INC /NY/
CIK 0001017918
$31M1.7M0.09%Q1 202605
CITADEL ADVISORS LLC
CIK 0001423053
$31M1.7M0.00%Q4 202506
ADAR1 Capital Management, LLC
CIK 0001940272
$27M1.4M1.58%Q1 202607
FMR LLC
CIK 0000315066
$24M1.3M0.00%Q1 202608
BlackRock, Inc.
CIK 0002012383
$16M865K0.00%Q1 202609
Rock Springs Capital Management LP
CIK 0001595725
$15M815K0.90%Q1 202610
UBS Group AG
CIK 0001610520
$9M504K0.00%Q1 202611
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$9M467K0.00%Q1 202612
B Group, Inc.
CIK 0002043476
$8M451K6.28%Q1 202613
SCHRODER INVESTMENT MANAGEMENT GROUP
CIK 0001086619
$7M393K0.01%Q1 202614
NAN FUNG TRINITY (HK) Ltd
CIK 0001781880
$7M346K0.72%Q1 202615
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$6M310K0.00%Q1 202616
SUPERSTRING CAPITAL MANAGEMENT LP
CIK 0001931118
$5M276K3.71%Q1 202617
AMERIPRISE FINANCIAL INC
CIK 0000820027
$5M244K0.00%Q1 202618
Aberdeen Group plc
CIK 0001716774
$4M238K0.01%Q1 202619
D. E. Shaw & Co., Inc.
CIK 0001009207
$4M239K0.00%Q4 202520
MARSHALL WACE, LLP
CIK 0001318757
$4M232K0.00%Q4 2025
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