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. Holder counts are more reliable. Shares outstanding: 162.6m as of 2023-02-28, 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 ≈ $3.03. Options: 8 managers hold calls ($5.2m notional), 9 hold puts ($1.2m).
Trends to Q1 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 127 |
| Q4 2022 | 115 |
| Q1 2023 | 123 |
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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $1.9m | $1.3m | 0.64 |
| Q4 2022 | $3.7m | $1.8m | 0.47 |
| Q1 2023 | $5.2m | $1.2m | 0.23 |
Biggest buyers
| MORGAN STANLEY | Added | +4.6m |
| Whitefort Capital Management, LP | Added | +3.6m |
| Woodline Partners LP | New | +2.7m |
| Rubric Capital Management LP | Added | +728.8k |
| Hudson Bay Capital Management LP | Added | +496.5k |
| KENNEDY CAPITAL MANAGEMENT LLC | New | +392.8k |
| TWO SIGMA INVESTMENTS, LP | New | +369.8k |
| VANGUARD GROUP INC | Added | +276.2k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +239.9k |
| JPMORGAN CHASE & CO | Added | +221.3k |
Biggest sellers
| Oasis Management Co Ltd. | Sold out | -1.1m |
| ETF MANAGERS GROUP, LLC | Reduced | -588.0k |
| BlackRock Inc. | Reduced | -236.3k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -192.1k |
| JACOB ASSET MANAGEMENT OF NEW YORK LLC | Sold out | -187.4k |
| CITADEL ADVISORS LLC | Reduced | -145.7k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -130.7k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -129.7k |
| GOLDMAN SACHS GROUP INC | Reduced | -113.4k |
| BOOTHBAY FUND MANAGEMENT, LLC | Reduced | -88.7k |
Biggest calls
| PEAK6 Investments LLC | Reduced | $1.3m432.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.0m340.4k shares |
| GROUP ONE TRADING LLC | Reduced | $786.9k259.7k shares |
| SIMPLEX TRADING, LLC | Added | $596.0k196.9k shares |
| CITIGROUP INC | New | $556.0k183.5k shares |
| CITADEL ADVISORS LLC | Reduced | $500.9k165.3k shares |
| Caption Management, LLC | Added | $454.5k150.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $371.2k122.5k shares |
| CITIGROUP INC | New | $303.0k100.0k shares |
| Caption Management, LLC | Unchanged | $303.0k100.0k shares |
| PEAK6 Investments LLC | Reduced | $68.2k22.5k shares |
| SIMPLEX TRADING, LLC | Reduced | $60.0k20.0k shares |
| GROUP ONE TRADING LLC | Reduced | $52.1k17.2k shares |
| CITADEL ADVISORS LLC | Reduced | $36.7k12.1k shares |
| WOLVERINE TRADING, LLC | Reduced | $31.0k10.4k 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 Q1 2023
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 |
|---|---|---|---|---|---|
| Q2 2021 | 0 | — | 0 | — | — |
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 1 | $1.0m | — |
| Q1 2022 | 0 | — | 0 | — | — |
| Q2 2022 | 0 | — | 0 | — | — |
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
None reported in Q1 2023.
Holders, Q1 2023
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.00% of their portfolio | 8.5m $25.6m | Reduced -236.3k |
| Whitefort Capital Management, LP 21.12% of their portfolio | 7.5m $22.7m | Added +3.6m |
| Two Seas Capital LP 20.76% of their portfolio | 7.5m $22.6m | Reduced -39.5k |
| VANGUARD GROUP INC 0.00% of their portfolio | 5.6m $17.1m | Added +276.2k |
| Hudson Bay Capital Management LP 0.10% of their portfolio | 5.3m $16.2m | Added +496.5k |
| MORGAN STANLEY 0.00% of their portfolio | 4.9m $14.8m | Added +4.6m |
| Rubric Capital Management LP 0.51% of their portfolio | 4.2m $12.7m | Added +728.8k |
| Woodline Partners LP 0.11% of their portfolio | 2.7m $8.1m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.3m $6.9m | Added +156.6k |
| STATE STREET CORP 0.00% of their portfolio | 2.1m $6.3m | Added +43.0k |
| FourWorld Capital Management LLC 3.99% of their portfolio | 2.0m $6.1m | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 1.7m $5.0m | Reduced -192.1k |
| OSAIC HOLDINGS, INC. 0.01% of their portfolio | 1.4m $4.2m | Unchanged |
| NORTHERN TRUST CORP 0.00% of their portfolio | 949.9k $2.9m | Added +31.1k |
| Assenagon Asset Management S.A. 0.01% of their portfolio | 817.6k $2.5m | Unchanged |
| BOOTHBAY FUND MANAGEMENT, LLC 0.05% of their portfolio | 624.0k $1.9m | Reduced -88.7k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 422.7k $1.3m | Added +4.2k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 392.8k $1.2m | New |
| FMR LLC 0.00% of their portfolio | 373.4k $1.1m | Added +188.2k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 369.8k $1.1m | New |
| PRIMECAP MANAGEMENT CO/CA/ 0.00% of their portfolio | 345.9k $1.0m | Reduced -5.6k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 317.5k $981.2k | Reduced -2.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 309.0k $936.2k | Added +3.7k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 294.2k $891.2k | Added +221.3k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 279.8k $847.9k | Reduced -129.7k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 275.0k $833.0k | Added +239.9k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 274.5k $832.0k | Reduced -15.6k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 270.6k $819.9k | Reduced -113.4k |
| DekaBank Deutsche Girozentrale 0.00% of their portfolio | 250.0k $734.0k | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 221.1k $670.0k | Reduced -145.7k |
| Tejara Capital Ltd 0.31% of their portfolio | 200.0k $606.0k | Unchanged |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 163.9k $496.6k | Reduced -130.7k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 159.1k $482.0k | Added +9.6k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 136.3k $413.0k | Added +29.7k |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 119.2k $361.2k | New |
| ALPS ADVISORS INC 0.00% of their portfolio | 107.1k $324.5k | Added +877 |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 99.1k $300.3k | Added +6.1k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 91.8k $277.0k | Reduced -2.1k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 88.0k $266.6k | Added +13.7k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 85.6k $259.4k | Added +65.5k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 72.0k $218.0k | Added +21.7k |
| Jump Financial, LLC 0.01% of their portfolio | 69.0k $209.0k | New |
| LMR Partners LLP 0.00% of their portfolio | 60.0k $181.8k | Unchanged |
| MetLife Investment Management, LLC 0.00% of their portfolio | 59.0k $178.7k | Added +14.8k |
| BARCLAYS PLC 0.00% of their portfolio | 57.6k $174.4k | Added +27.1k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 57.3k $173.6k | Added +8.2k |
| AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio | 54.8k $166.1k | Added +1.1k |
| Clear Harbor Asset Management, LLC 0.02% of their portfolio | 53.0k $160.6k | Unchanged |
| SG Americas Securities, LLC 0.00% of their portfolio | 52.4k $159.0k | Added +27.0k |
| ETF MANAGERS GROUP, LLC 0.01% of their portfolio | 52.0k $157.4k | Reduced -588.0k |
| Wealth Management Associates, Inc. 0.09% of their portfolio | 49.6k $150.3k | Added +350 |
| Invesco Ltd. 0.00% of their portfolio | 47.0k $142.3k | Added +1.6k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 44.9k $136.0k | Reduced -30.5k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 42.2k $128.0k | Reduced -3.9k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 42.2k $127.9k | Unchanged |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 42.2k $127.7k | Unchanged |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 39.1k $118.4k | Added +251 |
| GSA CAPITAL PARTNERS LLP 0.01% of their portfolio | 38.2k $116.0k | Reduced -79.0k |
| VIRTUS ADVISERS, LLC 0.06% of their portfolio | 37.2k $112.7k | Reduced -14.3k |
| CM WEALTH ADVISORS LLC 0.02% of their portfolio | 37.1k $94.0k | New |
| UBS Group AG 0.00% of their portfolio | 36.7k $111.1k | Added +13.4k |
| VERUS CAPITAL PARTNERS, LLC 0.02% of their portfolio | 34.6k $104.9k | Added +7.3k |
| Rafferty Asset Management, LLC 0.00% of their portfolio | 31.7k $96.0k | Reduced -62.8k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 31.4k $95.3k | Unchanged |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 31.2k $94.5k | Reduced -8.9k |
| SCOTIA CAPITAL INC. 0.00% of their portfolio | 29.2k $88.5k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 27.9k $84.4k | Added +18.8k |
| Verition Fund Management LLC 0.00% of their portfolio | 25.4k $76.9k | New |
| ProShare Advisors LLC 0.00% of their portfolio | 24.2k $73.4k | Reduced -3.3k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 22.0k $66.7k | New |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 21.5k $66.0k | Added +1.4k |
| TWO SIGMA SECURITIES, LLC 0.01% of their portfolio | 21.2k $64.3k | New |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 20.9k $63.4k | Reduced -1.8k |
| Kades & Cheifetz LLC 0.05% of their portfolio | 20.0k $60.6k | Unchanged |
| BUCKINGHAM STRATEGIC WEALTH, LLC 0.00% of their portfolio | 17.7k $41.3k | Unchanged |
| DARK FOREST CAPITAL MANAGEMENT LP 0.01% of their portfolio | 17.2k $52.0k | New |
| MONETA GROUP INVESTMENT ADVISORS LLC 0.00% of their portfolio | 15.0k $45.5k | Added +4.9k |
| Ergoteles LLC 0.00% of their portfolio | 15.0k $45.5k | New |
| Arete Wealth Advisors, LLC 0.00% of their portfolio | 15.0k $45.0k | New |
| FIRST MANHATTAN CO. LLC. 0.00% of their portfolio | 14.0k $42.4k | New |
| AMALGAMATED BANK 0.00% of their portfolio | 13.7k $42.0k | Reduced -1.9k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 13.3k $40.3k | New |
| WMG Financial Advisors, LLC 0.03% of their portfolio | 12.6k $38.2k | Unchanged |
| Virtu Financial LLC 0.00% of their portfolio | 12.2k $37.0k | Reduced -32.0k |
| Legal & General Group Plc 0.00% of their portfolio | 12.2k $37.0k | Unchanged |
| Apollon Wealth Management, LLC 0.00% of their portfolio | 11.7k $35.5k | Added +125 |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 11.4k $34.4k | Reduced -81.9k |
| State of Wyoming 0.01% of their portfolio | 11.0k $33.3k | Reduced -30.9k |
| Simplicity Solutions, LLC 0.00% of their portfolio | 10.8k $32.8k | New |
| Bleakley Financial Group, LLC 0.00% of their portfolio | 10.8k $32.8k | New |
| Front Row Advisors LLC 0.02% of their portfolio | 10.5k $32.0k | Unchanged |
| PATHSTONE FAMILY OFFICE, LLC 0.00% of their portfolio | 10.0k $30.3k | Reduced -10.0k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 9.8k $30.0k | Reduced -5.0k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 9.1k $27.6k | Added +3.0k |
| BROWN, LISLE/CUMMINGS, INC. 0.01% of their portfolio | 7.5k $22.7k | New |
| Financial Synergies Wealth Advisors, Inc. 0.00% of their portfolio | 7.3k $22.3k | Unchanged |
| Metropolitan Life Insurance Co/NY 0.00% of their portfolio | 6.2k $18.8k | Reduced -384 |
| BENJAMIN F. EDWARDS & COMPANY, INC. 0.00% of their portfolio | 5.8k $17.0k | Reduced -4.9k |
| CAMBRIDGE TRUST CO 0.00% of their portfolio | 5.0k $15.2k | Unchanged |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 4.9k $14.0k | Reduced -41.1k |