13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Biological Products, (No Diagnostic Substances)Cheap mega-capRe-rated
ADPT

ADAPTIVE BIOTECHNOLOGIES COR

301 institutions still hold ADAPTIVE BIOTECHNOLOGIES COR as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 00650F109·Biological Products, (No Diagnostic Substances)·301 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 9.8%
vs prior quarter
13F value held
$1.4B
60.0% inst. owned
of float
Holders
301
-92 QoQ
filers reporting
Activity
+23 / −58
+736 added · −734 reduced
this quarter
Concentration
29.91%
VIKING GLOBAL INVESTORS LP #1
top holder share
AI Holders Summary · Q1 2026

301 institutions reported ADPT in Q1 2026. VIKING GLOBAL INVESTORS LP leads at 29.9% of the visible book. -92 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
VIKING GLOBAL INVESTORS LP
CIK 0001103804
$416M30.0M1.16%Q1 202602
BlackRock, Inc.
CIK 0002012383
$185M13.3M0.00%Q1 202603
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$85M6.1M0.00%Q1 202604
WESTFIELD CAPITAL MANAGEMENT CO LP
CIK 0001177719
$75M5.4M0.32%Q1 202605
Vanguard Portfolio Management
CIK 0002100121· Index
$62M4.5M0.00%Q1 202606
Invesco Ltd.
CIK 0000914208
$62M4.5M0.01%Q1 202607
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$54M3.9M0.01%Q1 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$50M3.6M0.00%Q1 202609
GOLDMAN SACHS GROUP INC
CIK 0000886982
$45M3.2M0.01%Q1 202610
STATE STREET CORP
CIK 0000093751
$45M3.2M0.00%Q1 202611
JENNISON ASSOCIATES LLC
CIK 0000053417
$43M2.7M0.03%Q4 202512
AMERIPRISE FINANCIAL INC
CIK 0000820027
$42M3.0M0.01%Q1 202613
BNP Paribas Asset Management Holding S.A.
CIK 0001520354
$37M2.7M0.04%Q1 202614
D. E. Shaw & Co., Inc.
CIK 0001009207
$31M1.9M0.02%Q4 202515
ARK Investment Management LLC
CIK 0001697748
$29M2.1M0.23%Q1 202616
FRED ALGER MANAGEMENT, LLC
CIK 0000003520
$29M2.1M0.13%Q1 202617
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$28M2.0M0.01%Q1 202618
Delaware Management Holdings, Inc.
CIK 0000921739
$26M1.9M0.04%Q1 202619
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 0000938206
$24M1.8M0.18%Q1 202620
Aristotle Atlantic Partners, LLC
CIK 0001697267
$24M1.7M1.11%Q1 2026
Page 1 of 16
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