Skip to main content
Equibles

ABUS

Arbutus Biopharma Corp

Company with tickers: ABUS

CIK
1447028
CUSIP
03879J100
Shares Outstanding
197,537,710
13F Activity (30d)
129 filings 126 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 170
Total Value: $629,854,371
Total Shares: 139,967,649
Showing 1–100 of 177 holdings by value · page 1 of 2

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 170 13F filers · Δ vs Dec 31, 2025
Top Holder
18.5%
Jun 2023 → Mar 2026 · range 14.5% – 21.4%
−2.7 pts
Top 5
56.5%
Jun 2023 → Mar 2026 · range 51.7% – 63.1%
−3.1 pts
Top 10
73.7%
Jun 2023 → Mar 2026 · range 72.1% – 80.0%
−3.0 pts
HHI
829
Jun 2023 → Mar 2026 · range 697 – 970
Broadly held −77

Quarterly Activity

vs Dec 31, 2025
New
30
Increased
47
Decreased
51
Sold Out
36
Unchanged
42
Holder count: -6
Institutional value: +4.2%
Shares held: +11.4%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid Two Seas Capital LP +5,968,385 18,557,543
Mid Rubric Capital Management LP +5,051,013 6,626,389
Mega BARCLAYS PLC +3,959,411 4,316,095
Mega Legal & General Group Plc +2,278,628 2,401,389
Small Whitefort Capital Management, LP +1,587,657 14,930,885

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mid ADAR1 Capital Management, LLC −2,281,934 3,133,175
Large ADAGE CAPITAL PARTNERS GP, L.L.C. −1,675,000 2,664,941
Mega MORGAN STANLEY −811,296 25,891,480
Small Rangeley Capital, LLC −340,000 500,000
Large Hudson Bay Capital Management LP −325,000 350,000

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 6,688,911 $30,100,099
Large Jefferies Financial Group Inc. 1,894,067 $8,523,301
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 1,392,024 $6,264,108
Mega VANGUARD FIDUCIARY TRUST CO 1,063,054 $4,783,743
Small Deltroit Asset Management (UK) LLP 800,000 $3,600,000

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 9,242,437 $44,456,120
Small STEMPOINT CAPITAL LP 986,751 $4,746,272
Small DIADEMA PARTNERS LP 548,600 $2,638,766
Mid Affinity Asset Advisors, LLC 521,900 $2,510,339
Small Murchinson Ltd. 497,900 $2,394,899
Filter: New 30 Increased 47 Reduced 51 Sold out 36 Unchanged 42
Showing 100 of 177
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega MORGAN STANLEY $116,511,657 18.50% 25,891,480
Mid Two Seas Capital LP $83,508,943 13.26% 18,557,543
Small Whitefort Capital Management, LP $67,188,982 10.67% 14,930,885
Mega BlackRock, Inc. $58,351,255 9.26% 12,966,946
Mega VANGUARD CAPITAL MANAGEMENT LLC $30,100,099 4.78% 6,688,911
Mid Rubric Capital Management LP $29,818,750 4.73% 6,626,389
Mega STATE STREET CORP $28,541,295 4.53% 6,342,510
Mega BARCLAYS PLC $19,422,427 3.08% 4,316,095
Mega GEODE CAPITAL MANAGEMENT, LLC $16,973,126 2.69% 3,771,806
Mid ADAR1 Capital Management, LLC $14,099,287 2.24% 3,133,175
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $11,992,234 1.90% 2,664,941
Mid BlackBarn Capital Partners LP $11,250,000 1.79% 2,500,000
Mega Legal & General Group Plc $10,806,250 1.72% 2,401,389
Large Woodline Partners LP $9,045,774 1.44% 2,010,172
Large Jefferies Financial Group Inc. $8,523,301 1.35% 1,894,067
Mega BANK OF AMERICA CORP /DE/ Bank $7,576,326 1.20% 1,683,628
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $6,305,206 1.00% 1,401,157
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $6,264,108 0.99% 1,392,024
Large OSAIC HOLDINGS, INC. $6,066,571 0.96% 1,348,127
Mega NORTHERN TRUST CORP Bank $5,750,363 0.91% 1,277,859
Mega GOLDMAN SACHS GROUP INC $4,951,952 0.79% 1,100,434
Mega VANGUARD FIDUCIARY TRUST CO Bank $4,783,743 0.76% 1,063,054
Mega CITIGROUP INC $4,042,894 0.64% 898,421
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $3,771,945 0.60% 838,210
Small Deltroit Asset Management (UK) LLP $3,600,000 0.57% 800,000
Mega BANK OF MONTREAL /CAN/ Bank $3,522,433 0.56% 782,763
Mega CITADEL ADVISORS LLC $3,047,121 0.48% 677,138
Mega MILLENNIUM MANAGEMENT LLC $2,891,016 0.46% 642,448
Small Western Standard LLC $2,347,141 0.37% 521,587
Mid Quinn Opportunity Partners LLC $2,315,308 0.37% 514,513
Small Rangeley Capital, LLC $2,250,000 0.36% 500,000
Mid Freestone Capital Holdings, LLC $1,991,250 0.32% 442,500
Mega WELLINGTON MANAGEMENT GROUP LLP $1,984,158 0.32% 440,924
Mid KENNEDY CAPITAL MANAGEMENT LLC $1,769,094 0.28% 393,132
Mega Bank of New York Mellon Corp Bank $1,707,178 0.27% 379,373
Mega UBS Group AG $1,640,118 0.26% 364,471
Large Hudson Bay Capital Management LP $1,575,000 0.25% 350,000
Mega Swiss National Bank Bank $1,275,300 0.20% 283,400
Micro Ledgewood Wealth Advisors, LLC $1,252,962 0.20% 278,436
Mega Nuveen, LLC $1,165,576 0.19% 259,017
Small Carrera Capital Advisors $1,134,715 0.18% 252,159
Mega Invesco Ltd. $1,115,661 0.18% 247,925
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,088,865 0.17% 241,970
Mega CITIGROUP INC $1,035,000 0.16% 230,000
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $950,400 0.15% 211,200
Mega CITIGROUP INC $900,000 0.14% 200,000
Mega RAYMOND JAMES FINANCIAL INC $861,097 0.14% 191,355
Mega RHUMBLINE ADVISERS $804,532 0.13% 178,785
Mega DEUTSCHE BANK AG\ Bank $723,330 0.11% 160,740
Mega FMR LLC $653,067 0.10% 145,126
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $652,050 0.10% 144,900
Mega D. E. Shaw & Co., Inc. $644,404 0.10% 143,201
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $643,432 0.10% 142,985
Small Wealth Management Associates, Inc. $593,415 0.09% 131,870
Mega ALLIANCEBERNSTEIN L.P. $573,030 0.09% 127,340
Large Balyasny Asset Management L.P. $564,844 0.09% 125,521
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $563,548 0.09% 125,233
Small Avidity Partners Management LP $562,500 0.09% 125,000
Large Rafferty Asset Management, LLC $552,843 0.09% 122,854
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $545,908 0.09% 121,313
Mega PRICE T ROWE ASSOCIATES INC /MD/ $521,955 0.08% 115,990
Small Front Row Advisors LLC $497,250 0.08% 110,500
Small EntryPoint Capital, LLC $495,553 0.08% 110,123
Mid Campbell & CO Investment Adviser LLC $465,354 0.07% 103,412
Mega VANGUARD ASSET MANAGEMENT, Ltd $403,119 0.06% 89,582
Large STATE OF WISCONSIN INVESTMENT BOARD $397,615 0.06% 88,359
Mega JPMORGAN CHASE & CO $391,720 0.06% 87,049
Large MetLife Investment Management, LLC $364,810 0.06% 81,069
Small JBF Capital, Inc. $361,264 0.06% 80,281
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $357,597 0.06% 79,466
Large SG Americas Securities, LLC Broker-Dealer $355,648 0.06% 79,033
Mega CITADEL ADVISORS LLC $340,650 0.05% 75,700
Small Exome Asset Management LLC $339,678 0.05% 75,484
Mid DRW Securities, LLC Broker-Dealer $310,900 0.05% 69,089
Large Rockefeller Capital Management L.P. $283,500 0.05% 63,000
Mega JANUS HENDERSON GROUP PLC $274,050 0.04% 60,900
Large Creative Planning $270,526 0.04% 60,117
Mega WELLS FARGO & COMPANY/MN $264,190 0.04% 58,709
Mid Magnetar Financial LLC $263,322 0.04% 58,516
Small Virtus Investment Advisers, LLC $260,527 0.04% 57,895
Mid PROFUND ADVISORS LLC $253,156 0.04% 56,257
Mega Vanguard Global Advisers, LLC $248,184 0.04% 55,152
Mega Mitsubishi UFJ Asset Management Co., Ltd. $237,429 0.04% 52,762
Mid GROUP ONE TRADING LLC $228,793 0.04% 50,843
Large State of New Jersey Common Pension Fund D Pension $221,832 0.04% 49,296
Large Quantinno Capital Management LP $219,217 0.03% 48,715
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $190,930 0.03% 42,429
Large Police & Firemen's Retirement System of New Jersey Pension $187,488 0.03% 41,664
Mega BNP PARIBAS ARBITRAGE, SA $187,024 0.03% 41,561
Mid XTX Topco Ltd $180,094 0.03% 40,021
Small Premier Path Wealth Partners, LLC $180,000 0.03% 40,000
Large ARIZONA STATE RETIREMENT SYSTEM Pension $178,290 0.03% 39,620
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension $161,190 0.03% 35,820
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $158,706 0.03% 35,268
Mid China Universal Asset Management Co., Ltd. $153,580 0.02% 34,129
Mid INTECH INVESTMENT MANAGEMENT LLC $151,083 0.02% 33,574
Mega JANE STREET GROUP, LLC $148,500 0.02% 33,000
Small INCEPTIONR LLC $146,610 0.02% 32,580
Mega CITADEL ADVISORS LLC $145,800 0.02% 32,400
Large Vanguard Investments Australia, Ltd. $140,796 0.02% 31,288

Report a Problem

Category
Description
Email (optional, for follow-up)