ARBUTUS BIOPHARMA CORP ABUS
COM · Common Stock · CUSIP 03879J100 · ISIN CA03879J1003
Canadian Bio Tech Company
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersWarminster, PA
- Founded2007
- Websitearbutusbio.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($118.2k this quarter). Holder counts are more reliable. Shares outstanding: 189.5m as of 2024-11-05, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $3.27. Options: 8 managers hold calls ($2.4m notional), 9 hold puts ($2.4m).
Trends to Q4 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 127 |
| Q4 2022 | 115 |
| Q1 2023 | 123 |
| Q2 2023 | 112 |
| Q3 2023 | 101 |
| Q4 2023 | 113 |
| Q1 2024 | 120 |
| Q2 2024 | 132 |
| Q3 2024 | 145 |
| Q4 2024 | 155 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2023 | 58 | 42 |
| Q2 2023 | 48 | 53 |
| Q3 2023 | 41 | 39 |
| Q4 2023 | 48 | 35 |
| Q1 2024 | 52 | 48 |
| Q2 2024 | 69 | 41 |
| Q3 2024 | 72 | 44 |
| Q4 2024 | 71 | 54 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2024 | $12.8m | $1.6m | 0.13 |
| Q2 2024 | $11.0m | $1.3m | 0.12 |
| Q3 2024 | $9.3m | $2.2m | 0.23 |
| Q4 2024 | $2.4m | $2.4m | 0.98 |
Biggest buyers
| MORGAN STANLEY | Added | +878.5k |
| BlackRock, Inc. | Added | +718.7k |
| JPMORGAN CHASE & CO | Added | +717.1k |
| STATE STREET CORP | Added | +619.5k |
| Whitefort Capital Management, LP | Added | +373.9k |
| Two Seas Capital LP | Added | +353.6k |
| Woodline Partners LP | Added | +303.5k |
| BlackBarn Capital Partners LP | Added | +271.0k |
| Qube Research & Technologies Ltd | Added | +220.1k |
| Saba Capital Management, L.P. | Added | +211.6k |
Biggest sellers
| FourWorld Capital Management LLC | Reduced | -1.7m |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | -1.2m |
| ADAR1 Capital Management, LLC | Reduced | -534.5k |
| BOOTHBAY FUND MANAGEMENT, LLC | Reduced | -450.0k |
| CITADEL ADVISORS LLC | Reduced | -330.2k |
| Corbin Capital Partners, L.P. | Reduced | -170.8k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -91.9k |
| STATE OF WISCONSIN INVESTMENT BOARD | Reduced | -84.9k |
| SHERBROOKE PARK ADVISERS LLC | Sold out | -67.5k |
| UBS Group AG | Reduced | -67.4k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $799.8k244.6k shares |
| Caption Management, LLC | New | $572.2k175.0k shares |
| CITIGROUP INC | Reduced | $490.5k150.0k shares |
| CITADEL ADVISORS LLC | Reduced | $164.8k50.4k shares |
| SIMPLEX TRADING, LLC | Added | $162.0k49.8k shares |
| GROUP ONE TRADING LLC | Reduced | $127.5k39.0k shares |
| WOLVERINE TRADING, LLC | Reduced | $93.1k29.1k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| Squarepoint Ops LLC | New | $603.3k184.5k shares |
| Caption Management, LLC | New | $572.2k175.0k shares |
| CITIGROUP INC | Reduced | $490.5k150.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $366.2k112.0k shares |
| SIMPLEX TRADING, LLC | Added | $107.0k33.0k shares |
| CITADEL ADVISORS LLC | Reduced | $105.0k32.1k shares |
| GROUP ONE TRADING LLC | Added | $68.3k20.9k shares |
| WOLVERINE TRADING, LLC | Reduced | $40.0k12.5k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
Roivant Sciences Ltd.
13D · may seek influence
-1.0 pts · filed 2026-10-05
Stated purposeItem 4 is hereby amended by adding the following to the end thereof: On August 24, 2026, the Issuer commenced a modified Dutch auction tender offer to purchase for cancellation up to US$230 million in value of its Common Shares at prices between US$5.00 and US$5.75 per Common Share (the "Offer"), which included the option for shareholders to make a proportionate tender. Roivant made a proportionate tender of its Common Shares in the Offer in order to maintain its proportionate ownership of the Common Shares following completion of the Offer. The Offer expired at 5:00 p.m., New York City time, on September 29, 2026. On October 1, 2026, the Issuer announced that it had taken up and accepted for purchase 46,000,000 Common Shares at a purchase price of US$5.00 per Common Share, including 8,96… Full filing |
19.5% |
| MORGAN STANLEY 13G · institution +3.4 pts · filed 2026-10-07 | 12.2% |
| Two Seas Capital LP 13G · institution +2.9 pts · filed 2026-05-15 | 9.4% |
| Whitefort Capital Management, LP 13G · passive investor no change · filed 2026-09-04 | 8.0% |
| BlackRock, Inc. 13G · institution filed 2026-10-27 | 7.2% |
Insider purchases and sales in Q4 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 4 | $78.8k | $78.8k |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 1 | $32.6k | — |
| Q4 2024 | 0 | — | 0 | — | — |
None reported in Q4 2024.
Holders, Q4 2024
| Manager | Shares | Change |
|---|---|---|
| MORGAN STANLEY 0.01% of their portfolio | 22.6m $73.9m | Added +878.5k |
| Whitefort Capital Management, LP 20.72% of their portfolio | 13.2m $43.3m | Added +373.9k |
| BlackRock, Inc. 0.00% of their portfolio | 12.9m $42.3m | Added +718.7k |
| VANGUARD GROUP INC 0.00% of their portfolio | 9.0m $29.4m | Added +62.3k |
| Two Seas Capital LP 3.38% of their portfolio | 8.7m $28.6m | Added +353.6k |
| STATE STREET CORP 0.00% of their portfolio | 5.0m $16.4m | Added +619.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 3.5m $11.4m | Added +33.5k |
| BlackBarn Capital Partners LP 3.01% of their portfolio | 2.3m $7.7m | Added +271.0k |
| Rubric Capital Management LP 0.10% of their portfolio | 1.7m $5.5m | Unchanged |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.01% of their portfolio | 1.7m $5.4m | Reduced -1.2m |
| ADAR1 Capital Management, LLC 1.05% of their portfolio | 1.6m $5.1m | Reduced -534.5k |
| Rangeley Capital, LLC 4.54% of their portfolio | 1.5m $4.8m | First filing |
| OSAIC HOLDINGS, INC. 0.01% of their portfolio | 1.3m $4.4m | Reduced -25.0k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 1.3m $4.4m | Added +102.2k |
| FourWorld Capital Management LLC 2.16% of their portfolio | 1.2m $4.0m | Reduced -1.7m |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 1.2m $4.0m | Added +10.0k |
| Hudson Bay Capital Management LP 0.02% of their portfolio | 1.1m $3.6m | Added +82.5k |
| Woodline Partners LP 0.02% of their portfolio | 971.6k $3.2m | Added +303.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 896.3k $2.9m | Added +717.1k |
| Saba Capital Management, L.P. 0.07% of their portfolio | 888.0k $2.9m | Added +211.6k |
| Corbin Capital Partners, L.P. 3.64% of their portfolio | 682.5k $2.2m | Reduced -170.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 531.9k $1.7m | Reduced -28.5k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 513.3k $1.7m | Added +16.5k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 455.9k $1.5m | Added +15.6k |
| Freestone Capital Holdings, LLC 0.05% of their portfolio | 442.5k $1.4m | Reduced -700 |
| KENNEDY CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 420.7k $1.4m | Added +804 |
| Quinn Opportunity Partners LLC 0.10% of their portfolio | 404.9k $1.3m | Added +169.7k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 390.3k $1.3m | Added +220.1k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 361.3k $1.2m | Added +171.9k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 353.4k $1.2m | Added +803 |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 343.0k $1.1m | Added +92.1k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 313.3k $1.0m | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 298.3k $975.3k | Added +26.2k |
| Ledgewood Wealth Advisors, LLC 0.59% of their portfolio | 278.4k $910.5k | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 277.6k $907.6k | Reduced -330.2k |
| Swiss National Bank 0.00% of their portfolio | 276.3k $903.5k | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 248.0k $810.9k | Reduced -58.4k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio | 202.5k $662.3k | First filing |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 188.6k $616.7k | Added +10.7k |
| CITIGROUP INC 0.00% of their portfolio | 187.7k $613.8k | Added +78.7k |
| Squarepoint Ops LLC 0.00% of their portfolio | 178.1k $582.4k | Added +113.3k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 171.8k $561.7k | Added +75.2k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.02% of their portfolio | 162.3k $530.6k | Reduced -450.0k |
| LMR Partners LLP 0.01% of their portfolio | 158.2k $517.5k | Reduced -38.8k |
| Rafferty Asset Management, LLC 0.00% of their portfolio | 146.8k $480.0k | Added +31.8k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 132.8k $434.1k | Reduced -1.5k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 120.2k $393.2k | Reduced -17.4k |
| Legal & General Group Plc 0.00% of their portfolio | 118.7k $388.1k | Reduced -27.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 115.2k $376.8k | Added +10.3k |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 106.6k $348.6k | Added +43.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 103.9k $339.9k | Reduced -91.9k |
| UBS Group AG 0.00% of their portfolio | 101.0k $330.3k | Reduced -67.4k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 92.2k $301.4k | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 89.7k $293.2k | Added +52.2k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 89.4k $291.9k | Added +8.3k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 81.7k $267.0k | Reduced -59 |
| Clear Harbor Asset Management, LLC 0.02% of their portfolio | 79.8k $260.8k | Added +5.0k |
| FMR LLC 0.00% of their portfolio | 77.9k $254.8k | Reduced -5.4k |
| Corebridge Financial, Inc. 0.00% of their portfolio | 72.6k $237.5k | Reduced -5.5k |
| SBI Securities Co., Ltd. 0.01% of their portfolio | 72.3k $236.4k | First filing |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 70.6k $230.9k | Added +21.8k |
| Invesco Ltd. 0.00% of their portfolio | 69.8k $228.3k | Added +3.8k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 69.7k $238.2k | Reduced -12.3k |
| Caption Management, LLC 0.01% of their portfolio | 69.6k $227.6k | New |
| SG Americas Securities, LLC 0.00% of their portfolio | 69.1k $226.0k | Added +16.2k |
| Wealth Management Associates, Inc. 0.09% of their portfolio | 61.0k $199.5k | Added +6.5k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 60.9k $199.4k | Unchanged |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 57.1k $186.7k | Added +20.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 56.5k $185.0k | Added +8.6k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 55.5k $181.5k | Reduced -57 |
| XTX Topco Ltd 0.01% of their portfolio | 52.6k $171.9k | Added +22.6k |
| GROUP ONE TRADING LLC 0.01% of their portfolio | 52.2k $170.7k | Reduced -7.4k |
| ProShare Advisors LLC 0.00% of their portfolio | 50.1k $163.9k | Added +11.4k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 48.7k $159.3k | Added +15.0k |
| Creative Planning 0.00% of their portfolio | 48.3k $158.1k | Reduced -1.2k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 46.1k $150.6k | Reduced -2.5k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.00% of their portfolio | 42.1k $138.0k | Added +6.6k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 41.7k $136.3k | New |
| ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio | 41.0k $134.2k | Added +277 |
| China Universal Asset Management Co., Ltd. 0.01% of their portfolio | 40.2k $131.4k | Added +3.9k |
| Premier Path Wealth Partners, LLC 0.02% of their portfolio | 40.0k $130.8k | Unchanged |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 35.8k $117.1k | Unchanged |
| Focus Partners Wealth 0.00% of their portfolio | 35.6k $116.5k | Added +17.8k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 34.0k $111.0k | Added +17.6k |
| Ballentine Partners, LLC 0.00% of their portfolio | 31.1k $101.8k | New |
| Centiva Capital, LP 0.00% of their portfolio | 30.7k $100.5k | Reduced -9.3k |
| PROFUND ADVISORS LLC 0.00% of their portfolio | 30.2k $98.8k | Added +5.4k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 30.0k $98.0k | First filing |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 29.5k $96.4k | Reduced -240 |
| Exome Asset Management LLC 0.07% of their portfolio | 28.3k $92.5k | New |
| MONETA GROUP INVESTMENT ADVISORS LLC 0.00% of their portfolio | 26.0k $85.0k | Added +1.0k |
| KLP KAPITALFORVALTNING AS 0.00% of their portfolio | 25.6k $83.7k | First filing |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 21.9k $71.5k | Unchanged |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 20.5k $67.0k | New |
| Kades & Cheifetz LLC 0.03% of their portfolio | 20.0k $65.4k | Unchanged |
| VIRTUS ADVISERS, LLC 0.03% of their portfolio | 20.0k $65.3k | Reduced -9.2k |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 19.9k $65.0k | Reduced -45.4k |
| TWO SIGMA SECURITIES, LLC 0.01% of their portfolio | 19.5k $63.7k | New |
| VERUS CAPITAL PARTNERS, LLC 0.01% of their portfolio | 19.4k $63.3k | Reduced -7.5k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 18.9k $61.9k | New |