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 ($17.5k this quarter). Holder counts are more reliable. Shares outstanding: 188.8m as of 2024-08-07, 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 ≈ $3.09. Options: 8 managers hold calls ($11.0m notional), 6 hold puts ($1.3m).
Trends to Q2 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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 56 | 54 |
| Q1 2023 | 58 | 42 |
| Q2 2023 | 48 | 53 |
| Q3 2023 | 41 | 39 |
| Q4 2023 | 48 | 35 |
| Q1 2024 | 52 | 48 |
| Q2 2024 | 69 | 41 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $1.7m | $1.1m | 0.63 |
| Q4 2023 | $4.7m | $3.9m | 0.85 |
| Q1 2024 | $12.8m | $1.6m | 0.13 |
| Q2 2024 | $11.0m | $1.3m | 0.12 |
Biggest buyers
| Rubric Capital Management LP | New | +1.7m |
| ADAR1 Capital Management, LLC | Added | +1.2m |
| BlackRock Inc. | Added | +1.1m |
| VANGUARD GROUP INC | Added | +1.0m |
| CITIGROUP INC | Added | +914.4k |
| Two Seas Capital LP | Added | +729.8k |
| Freestone Capital Holdings, LLC | New | +546.3k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | +532.0k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +354.3k |
| STATE STREET CORP | Added | +322.6k |
Biggest sellers
| MORGAN STANLEY | Reduced | -5.5m |
| Woodline Partners LP | Reduced | -3.1m |
| CITADEL ADVISORS LLC | Reduced | -1.9m |
| Hudson Bay Capital Management LP | Reduced | -1.8m |
| Centiva Capital, LP | Reduced | -1.3m |
| AMERICAN CENTURY COMPANIES INC | Reduced | -107.7k |
| Lighthouse Investment Partners, LLC | Sold out | -99.1k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -83.0k |
| UBS Group AG | Reduced | -79.2k |
| FMR LLC | Reduced | -65.0k |
Biggest calls
| FourWorld Capital Management LLC | Unchanged | $4.9m1.6m shares |
| Squarepoint Ops LLC | Unchanged | $4.5m1.4m shares |
| CITIGROUP INC | Added | $880.6k285.0k shares |
| GROUP ONE TRADING LLC | Added | $366.5k118.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $361.5k117.0k shares |
| CITADEL ADVISORS LLC | Reduced | $73.2k23.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $50.0k16.4k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITIGROUP INC | Added | $880.6k285.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $190.7k61.7k shares |
| CITADEL ADVISORS LLC | Reduced | $92.4k29.9k shares |
| GROUP ONE TRADING LLC | Added | $73.9k23.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $45.0k14.8k 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 Q2 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 |
|---|---|---|---|---|---|
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| 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 | — | — |
None reported in Q2 2024.
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| MORGAN STANLEY 0.01% of their portfolio | 21.0m $64.8m | Reduced -5.5m |
| Whitefort Capital Management, LP 24.51% of their portfolio | 12.9m $39.8m | Added +5.8k |
| BlackRock Inc. 0.00% of their portfolio | 11.6m $35.7m | Added +1.1m |
| Two Seas Capital LP 4.32% of their portfolio | 8.6m $26.5m | Added +729.8k |
| VANGUARD GROUP INC 0.00% of their portfolio | 7.0m $21.7m | Added +1.0m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 3.3m $10.2m | Added +354.3k |
| ADAR1 Capital Management, LLC 2.05% of their portfolio | 3.3m $10.2m | Added +1.2m |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.02% of their portfolio | 3.0m $9.3m | Unchanged |
| FourWorld Capital Management LLC 12.08% of their portfolio | 3.0m $9.2m | Reduced -28.0k |
| STATE STREET CORP 0.00% of their portfolio | 2.9m $9.1m | Added +322.6k |
| BlackBarn Capital Partners LP 3.30% of their portfolio | 2.1m $6.4m | Unchanged |
| Hudson Bay Capital Management LP 0.04% of their portfolio | 1.7m $5.2m | Reduced -1.8m |
| Rubric Capital Management LP 0.14% of their portfolio | 1.7m $5.2m | New |
| OSAIC HOLDINGS, INC. 0.01% of their portfolio | 1.4m $4.2m | Added +2.3k |
| CITIGROUP INC 0.00% of their portfolio | 1.1m $3.5m | Added +914.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 1.1m $3.2m | Reduced -5.3k |
| Woodline Partners LP 0.03% of their portfolio | 926.5k $2.9m | Reduced -3.1m |
| Corbin Capital Partners, L.P. 4.95% of their portfolio | 853.3k $2.2m | Unchanged |
| Saba Capital Management, L.P. 0.04% of their portfolio | 651.4k $2.0m | Added +278.0k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.06% of their portfolio | 612.3k $1.9m | Unchanged |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 567.0k $1.8m | Added +532.0k |
| Freestone Capital Holdings, LLC 0.06% of their portfolio | 546.3k $1.7m | New |
| Bank of New York Mellon Corp 0.00% of their portfolio | 493.7k $1.5m | Added +86.1k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 475.0k $1.5m | Added +23.7k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 457.6k $1.4m | Added +21.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 380.6k $1.2m | Added +41.4k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 354.8k $1.1m | Added +20.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 348.2k $1.1m | Reduced -1.2k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 313.3k $968.1k | Added +19.2k |
| Ledgewood Wealth Advisors, LLC 0.74% of their portfolio | 278.4k $860.4k | Unchanged |
| LMR Partners LLP 0.02% of their portfolio | 255.4k $789.2k | Added +195.4k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 209.0k $645.7k | Reduced -33.2k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio | 208.2k $643.2k | Added +105.2k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 203.4k $628.5k | Added +159.3k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 185.1k $571.8k | Added +14.6k |
| Quinn Opportunity Partners LLC 0.06% of their portfolio | 165.1k $510.3k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 161.5k $498.9k | Reduced -14.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 157.3k $486.1k | Reduced -17.4k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 144.9k $447.7k | Reduced -1.9m |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 137.6k $425.2k | Added +41.6k |
| FMR LLC 0.00% of their portfolio | 100.8k $311.5k | Reduced -65.0k |
| Clear Harbor Asset Management, LLC 0.03% of their portfolio | 100.8k $311.4k | Reduced -15.5k |
| SIMPLEX TRADING, LLC 0.01% of their portfolio | 95.5k $295.0k | Added +7.4k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 89.7k $277.2k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 83.3k $257.3k | Added +14.8k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 81.7k $252.5k | Added +19.8k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 76.8k $237.0k | Added +3.6k |
| Corebridge Financial, Inc. 0.00% of their portfolio | 75.0k $231.9k | First filing |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 72.8k $224.9k | Reduced -63 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 65.1k $201.1k | First filing |
| Invesco Ltd. 0.00% of their portfolio | 61.1k $188.9k | Added +1.6k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 57.3k $177.1k | Added +4.2k |
| UBS Group AG 0.00% of their portfolio | 55.7k $172.0k | Reduced -79.2k |
| Centiva Capital, LP 0.01% of their portfolio | 52.8k $163.2k | Reduced -1.3m |
| Wealth Management Associates, Inc. 0.07% of their portfolio | 49.8k $153.9k | Unchanged |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 49.3k $152.2k | Added +4.4k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 48.1k $148.7k | Added +5.2k |
| BARCLAYS PLC 0.00% of their portfolio | 48.0k $148.4k | Reduced -41.2k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 45.0k $139.0k | Added +620 |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 44.5k $138.0k | Added +8.1k |
| Creative Planning 0.00% of their portfolio | 43.5k $134.4k | Added +13.7k |
| SHERBROOKE PARK ADVISERS LLC 0.02% of their portfolio | 41.6k $128.6k | New |
| VERUS CAPITAL PARTNERS, LLC 0.01% of their portfolio | 41.5k $128.3k | Reduced -400 |
| Tidal Investments LLC 0.00% of their portfolio | 41.3k $127.5k | Reduced -1.9k |
| National Philanthropic Trust 0.00% of their portfolio | 36.2k $111.9k | Unchanged |
| Premier Path Wealth Partners, LLC 0.02% of their portfolio | 36.0k $111.2k | Added +5.5k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 35.8k $110.7k | New |
| VIRTUS ADVISERS, LLC 0.04% of their portfolio | 28.6k $88.5k | New |
| ProShare Advisors LLC 0.00% of their portfolio | 28.6k $88.4k | Reduced -5.9k |
| GROUP ONE TRADING LLC 0.00% of their portfolio | 26.2k $80.9k | Reduced -39.8k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 26.1k $80.7k | Reduced -15.3k |
| MONETA GROUP INVESTMENT ADVISORS LLC 0.00% of their portfolio | 25.0k $77.2k | Unchanged |
| Verition Fund Management LLC 0.00% of their portfolio | 23.9k $73.9k | New |
| China Universal Asset Management Co., Ltd. 0.01% of their portfolio | 22.2k $68.5k | Reduced -10.1k |
| COWEN AND COMPANY, LLC 0.00% of their portfolio | 20.0k $61.8k | Reduced -30.0k |
| Kades & Cheifetz LLC 0.04% of their portfolio | 20.0k $61.8k | Unchanged |
| PFG Investments, LLC 0.00% of their portfolio | 19.2k $59.3k | Unchanged |
| SCOTIA CAPITAL INC. 0.00% of their portfolio | 18.7k $57.9k | Reduced -10.3k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 18.5k $57.1k | Reduced -107.7k |
| BUCKINGHAM STRATEGIC WEALTH, LLC 0.00% of their portfolio | 17.8k $55.1k | Added +100 |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 17.1k $52.8k | Reduced -500 |
| XTX Topco Ltd 0.00% of their portfolio | 17.0k $52.6k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 16.3k $50.5k | Added +14.5k |
| Legal & General Group Plc 0.00% of their portfolio | 15.2k $47.1k | Added +2.9k |
| Arete Wealth Advisors, LLC 0.00% of their portfolio | 15.0k $46.0k | New |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 15.0k $46.3k | Added +2.4k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 14.9k $46.0k | Reduced -83.0k |
| FIRST MANHATTAN CO. LLC. 0.00% of their portfolio | 14.0k $43.3k | Unchanged |
| Walleye Trading LLC 0.00% of their portfolio | 14.0k $43.3k | Unchanged |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 13.4k $40.9k | Reduced -99 |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 12.6k $39.0k | Added +3.5k |
| WMG Financial Advisors, LLC 0.02% of their portfolio | 12.6k $38.9k | Unchanged |
| nVerses Capital, LLC 0.02% of their portfolio | 11.0k $34.0k | New |
| Kestra Advisory Services, LLC 0.00% of their portfolio | 10.8k $33.4k | Reduced -223 |
| Pathstone Holdings, LLC 0.00% of their portfolio | 10.7k $32.9k | Added +502 |
| Front Row Advisors LLC 0.01% of their portfolio | 10.5k $32.4k | Unchanged |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 10.1k $31.2k | Reduced -2.6k |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 8.0k $25.0k | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 6.8k $20.9k | Reduced -101 |
| Covestor Ltd 0.01% of their portfolio | 6.7k $21.0k | New |