13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Pharmaceutical PreparationsBellwetherCompounder
ABUS

ARBUTUS BIOPHARMA CORP

177 institutions still hold ARBUTUS BIOPHARMA CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 03879J100·Pharmaceutical Preparations·177 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 2.3%
vs prior quarter
13F value held
$526M
65.0% inst. owned
of float
Holders
177
+126 QoQ
filers reporting
Activity
+30 / −42
+950 added · −752 reduced
this quarter
Concentration
22.15%
MORGAN STANLEY #1
top holder share
AI Holders Summary · Q1 2026

177 institutions reported ABUS in Q1 2026. MORGAN STANLEY leads at 22.1% of the visible book. +126 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
MORGAN STANLEY
CIK 0000895421
$117M25.9M0.01%Q1 202602
Two Seas Capital LP
CIK 0001823138
$84M18.6M1.17%Q1 202603
Whitefort Capital Management, LP
CIK 0001884931
$67M14.9M19.81%Q1 202604
BlackRock, Inc.
CIK 0002012383
$58M13.0M0.00%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$30M6.7M0.00%Q1 202606
STATE STREET CORP
CIK 0000093751
$29M6.3M0.00%Q1 202607
BARCLAYS PLC
CIK 0000312069
$19M4.3M0.00%Q1 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$17M3.8M0.00%Q1 202609
ADAR1 Capital Management, LLC
CIK 0001940272
$14M3.1M0.83%Q1 202610
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
$12M2.7M0.02%Q1 202611
BlackBarn Capital Partners LP
CIK 0002010204
$11M2.5M0.91%Q1 202612
Legal & General Group Plc
CIK 0000764068
$11M2.4M0.00%Q1 202613
Woodline Partners LP
CIK 0001784547
$9M2.0M0.03%Q1 202614
Jefferies Financial Group Inc.
CIK 0000096223
$9M1.9M0.06%Q1 202615
Rubric Capital Management LP
CIK 0001687509
$8M1.6M0.09%Q4 202516
BANK OF AMERICA CORP /DE/
CIK 0000070858
$8M1.7M0.00%Q1 202617
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$6M1.4M0.00%Q1 202618
Vanguard Portfolio Management
CIK 0002100121
$6M1.4M0.00%Q1 202619
OSAIC HOLDINGS, INC.
CIK 0001677044
$6M1.3M0.01%Q1 202620
CITIGROUP INC
CIK 0000831001
$6M1.3M0.00%Q1 2026
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