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: 167.6m as of 2023-08-01, 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 ≈ $2.30. Options: 7 managers hold calls ($2.3m notional), 8 hold puts ($1.1m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 127 |
| Q4 2022 | 115 |
| Q1 2023 | 123 |
| Q2 2023 | 112 |
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 |
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 |
| Q2 2023 | $2.3m | $1.1m | 0.48 |
Biggest buyers
| CITADEL ADVISORS LLC | Added | +2.1m |
| BlackRock Inc. | Added | +1.5m |
| Two Seas Capital LP | Added | +816.1k |
| Whitefort Capital Management, LP | Added | +593.9k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +310.2k |
| Jefferies Financial Group Inc. | New | +264.4k |
| MORGAN STANLEY | Added | +197.7k |
| VANGUARD GROUP INC | Added | +178.2k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | +147.6k |
| STATE STREET CORP | Added | +141.2k |
Biggest sellers
| Hudson Bay Capital Management LP | Reduced | -2.5m |
| Rubric Capital Management LP | Reduced | -799.2k |
| FourWorld Capital Management LLC | Reduced | -658.2k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -308.5k |
| WELLINGTON MANAGEMENT GROUP LLP | Sold out | -279.8k |
| JPMORGAN CHASE & CO | Reduced | -189.1k |
| FMR LLC | Reduced | -188.5k |
| Woodline Partners LP | Reduced | -188.4k |
| JANE STREET GROUP, LLC | Sold out | -136.3k |
| BOOTHBAY FUND MANAGEMENT, LLC | Reduced | -132.3k |
Biggest calls
| CITIGROUP INC | Added | $639.2k277.9k shares |
| GROUP ONE TRADING LLC | Reduced | $577.5k251.1k shares |
| Caption Management, LLC | Unchanged | $345.0k150.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $278.0k121.2k shares |
| CITADEL ADVISORS LLC | Reduced | $251.8k109.5k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $248.4k108.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITIGROUP INC | Added | $447.1k194.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $265.0k115.2k shares |
| Caption Management, LLC | Unchanged | $230.0k100.0k shares |
| GROUP ONE TRADING LLC | Added | $80.3k34.9k shares |
| CITADEL ADVISORS LLC | Added | $55.7k24.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $31.0k13.6k shares |
| WOLVERINE TRADING, LLC | Unchanged | $23.3k10.4k 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 Q2 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 |
|---|---|---|---|---|---|
| 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 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
None reported in Q2 2023.
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.00% of their portfolio | 10.0m $22.9m | Added +1.5m |
| Two Seas Capital LP 4.16% of their portfolio | 8.3m $19.0m | Added +816.1k |
| Whitefort Capital Management, LP 17.48% of their portfolio | 8.1m $18.6m | Added +593.9k |
| VANGUARD GROUP INC 0.00% of their portfolio | 5.8m $13.4m | Added +178.2k |
| MORGAN STANLEY 0.00% of their portfolio | 5.1m $11.7m | Added +197.7k |
| Rubric Capital Management LP 0.33% of their portfolio | 3.4m $7.8m | Reduced -799.2k |
| Hudson Bay Capital Management LP 0.07% of their portfolio | 2.8m $6.5m | Reduced -2.5m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.6m $6.0m | Added +310.2k |
| Woodline Partners LP 0.07% of their portfolio | 2.5m $5.7m | Reduced -188.4k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 2.3m $5.3m | Added +2.1m |
| STATE STREET CORP 0.00% of their portfolio | 2.2m $5.1m | Added +141.2k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 1.7m $3.9m | Added +41.6k |
| OSAIC HOLDINGS, INC. 0.01% of their portfolio | 1.4m $3.1m | Reduced -9.5k |
| FourWorld Capital Management LLC 0.89% of their portfolio | 1.3m $3.1m | Reduced -658.2k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 1.0m $2.4m | Added +93.6k |
| Assenagon Asset Management S.A. 0.01% of their portfolio | 817.6k $1.9m | Unchanged |
| BOOTHBAY FUND MANAGEMENT, LLC 0.04% of their portfolio | 491.7k $1.1m | Reduced -132.3k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 450.6k $1.0m | Added +27.9k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 428.3k $1.1m | Added +110.8k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 392.8k $903.5k | Unchanged |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 336.1k $773.0k | Added +27.1k |
| PRIMECAP MANAGEMENT CO/CA/ 0.00% of their portfolio | 328.1k $754.6k | Reduced -17.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 321.1k $739.0k | Added +46.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 311.5k $716.4k | Added +147.6k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 293.7k $675.6k | Added +19.3k |
| Jefferies Financial Group Inc. 0.01% of their portfolio | 264.4k $608.2k | New |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 222.1k $510.9k | Reduced -48.5k |
| Kepos Capital LP 0.08% of their portfolio | 200.0k $460.0k | First filing |
| FMR LLC 0.00% of their portfolio | 184.9k $425.3k | Reduced -188.5k |
| Tejara Capital Ltd 0.20% of their portfolio | 180.1k $414.2k | Reduced -19.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 170.8k $392.8k | Added +85.2k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 165.8k $381.4k | Added +6.7k |
| DekaBank Deutsche Girozentrale 0.00% of their portfolio | 150.0k $331.0k | Reduced -100.0k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 125.7k $289.2k | Added +83.5k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 111.5k $256.5k | Added +23.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 105.1k $241.6k | Reduced -189.1k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 98.0k $225.4k | Reduced -1.1k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 84.2k $193.6k | Added +26.9k |
| CITIGROUP INC 0.00% of their portfolio | 77.8k $178.8k | Added +76.0k |
| UBS Group AG 0.00% of their portfolio | 68.2k $156.8k | Added +31.5k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 61.3k $141.0k | Reduced -308.5k |
| AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio | 60.1k $138.2k | Added +5.2k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 59.0k $135.7k | Unchanged |
| LMR Partners LLP 0.00% of their portfolio | 57.3k $131.9k | Reduced -2.7k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 55.5k $127.7k | Reduced -16.4k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 55.2k $127.0k | Added +27.4k |
| Invesco Ltd. 0.00% of their portfolio | 53.5k $123.1k | Added +6.6k |
| Clear Harbor Asset Management, LLC 0.01% of their portfolio | 53.0k $121.9k | Unchanged |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 52.2k $120.0k | Added +10.0k |
| Wealth Management Associates, Inc. 0.06% of their portfolio | 49.6k $114.1k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 47.9k $110.2k | Reduced -9.7k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 44.8k $103.0k | Reduced -120 |
| VIRTUS ADVISERS, LLC 0.06% of their portfolio | 44.0k $101.3k | Added +6.8k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 41.7k $95.9k | Added +2.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 41.5k $95.5k | Reduced -719 |
| GSA CAPITAL PARTNERS LLP 0.01% of their portfolio | 36.9k $85.0k | Reduced -1.2k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 35.4k $81.5k | New |
| VERUS CAPITAL PARTNERS, LLC 0.01% of their portfolio | 33.6k $77.4k | Reduced -1.0k |
| SCOTIA CAPITAL INC. 0.00% of their portfolio | 29.0k $66.8k | Reduced -150 |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 28.9k $66.0k | Added +24.0k |
| ProShare Advisors LLC 0.00% of their portfolio | 27.0k $62.1k | Added +2.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 25.6k $59.0k | Added +4.1k |
| Man Group plc 0.00% of their portfolio | 24.5k $56.4k | New |
| MONETA GROUP INVESTMENT ADVISORS LLC 0.00% of their portfolio | 19.0k $43.7k | Added +4.0k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 18.8k $43.2k | Reduced -12.4k |
| BUCKINGHAM STRATEGIC WEALTH, LLC 0.00% of their portfolio | 17.7k $40.8k | Unchanged |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 17.2k $39.5k | Reduced -4.8k |
| AMALGAMATED BANK 0.00% of their portfolio | 15.8k $36.0k | Added +2.1k |
| Arete Wealth Advisors, LLC 0.00% of their portfolio | 15.0k $35.0k | Unchanged |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 14.5k $33.4k | Reduced -6.4k |
| Legal & General Group Plc 0.00% of their portfolio | 14.1k $32.3k | Added +1.9k |
| FIRST MANHATTAN CO. LLC. 0.00% of their portfolio | 14.0k $32.2k | Unchanged |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 13.7k $31.5k | New |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 13.0k $29.9k | Reduced -302 |
| WMG Financial Advisors, LLC 0.02% of their portfolio | 12.6k $29.0k | Unchanged |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 11.4k $26.1k | Unchanged |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 10.7k $24.5k | New |
| Front Row Advisors LLC 0.01% of their portfolio | 10.5k $24.0k | Unchanged |
| PATHSTONE FAMILY OFFICE, LLC 0.00% of their portfolio | 10.0k $23.0k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 9.8k $22.0k | Reduced -82.0k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 9.1k $21.0k | Unchanged |
| CREDIT AGRICOLE S A 0.00% of their portfolio | 7.8k $17.8k | New |
| BROWN, LISLE/CUMMINGS, INC. 0.01% of their portfolio | 7.5k $17.2k | Unchanged |
| Financial Synergies Wealth Advisors, Inc. 0.00% of their portfolio | 7.3k $16.9k | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 7.1k $16.4k | Reduced -2.7k |
| Metropolitan Life Insurance Co/NY 0.00% of their portfolio | 6.2k $14.3k | Unchanged |
| SIGNATUREFD, LLC 0.00% of their portfolio | 5.3k $12.1k | Added +4.1k |
| CAMBRIDGE TRUST CO 0.00% of their portfolio | 5.0k $11.5k | Unchanged |
| Cutler Group LLC / CA 0.00% of their portfolio | 4.5k $10.0k | Unchanged |
| BENJAMIN F. EDWARDS & COMPANY, INC. 0.00% of their portfolio | 4.5k $10.0k | Reduced -1.3k |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 4.0k $9.2k | Unchanged |
| NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio | 3.8k $8.7k | Unchanged |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 2.2k $5.0k | Added +57 |
| NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio | 2.1k $4.9k | Unchanged |
| US BANCORP \DE\ 0.00% of their portfolio | 1.9k $4.4k | New |
| BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC 0.00% of their portfolio | 1.5k $3.5k | Unchanged |
| Lindbrook Capital, LLC 0.00% of their portfolio | 833 $1.9k | Unchanged |
| HARBOR INVESTMENT ADVISORY, LLC 0.00% of their portfolio | 803 $1.8k | Unchanged |
| Federation des caisses Desjardins du Quebec 0.00% of their portfolio | 800 $1.8k | Unchanged |
| Parallel Advisors, LLC 0.00% of their portfolio | 550 $1.3k | Reduced -122 |