ARBUTUS BIOPHARMA CORP (ABUS) Institutional Shareholders
ARBUTUS BIOPHARMA CORP (ABUS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $625.95M in ABUS holdings during the latest filing period.
Morgan Stanley is currently the largest disclosed institutional shareholder of ABUS tracked by InsiderSet, reporting ownership valued at approximately $116.51M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $112.37M, representing an estimated loss of -3.56% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 74% of the total disclosed ABUS value among the investors covered in this analysis. Major shareholders include Morgan Stanley, Two Seas Capital Lp, Whitefort Capital Management, Lp, and several other long-term asset managers with concentrated positions in ARBUTUS BIOPHARMA CORP (ABUS).
This page ranks the largest institutional ABUS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
160
Total Reported Value
$625.95M
Largest Holder
Morgan Stanley
Largest Position
$116.51M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
192
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Morgan Stanley | 0.01% | 25,891,480 | $116,511,663 | $112,369,023 | -$4,142,640 | -3.56% | |
| Two Seas Capital Lp | 3.85% | 18,557,543 | $83,508,944 | $80,539,737 | -$2,969,207 | -3.56% | |
| Whitefort Capital Management, Lp | 20.45% | 14,930,885 | $67,188,983 | $64,800,041 | -$2,388,942 | -3.56% | |
| Blackrock, Inc. | 0.00% | 12,966,946 | $58,351,259 | $56,276,546 | -$2,074,713 | -3.56% | |
| Vanguard Capital Management Llc | 0.00% | 6,688,911 | $30,100,100 | $29,029,874 | -$1,070,226 | -3.56% | |
| Rubric Capital Management Lp | 0.37% | 6,626,389 | $29,818,751 | $28,758,528 | -$1,060,223 | -3.56% | |
| State Street Corp | 0.00% | 6,342,510 | $28,541,295 | $27,526,493 | -$1,014,802 | -3.56% | |
| Barclays Plc | 0.01% | 4,316,095 | $19,422,429 | $18,731,852 | -$690,577 | -3.56% | |
| Geode Capital Management, Llc | 0.00% | 3,771,806 | $16,976,722 | $16,369,638 | -$607,084 | -3.58% | |
| Adar1 Capital Management, Llc | 0.85% | 3,133,175 | $14,099,288 | $13,597,980 | -$501,309 | -3.56% | |
| Adage Capital Partners Gp, L.L.C. | 0.02% | 2,664,941 | $11,992,235 | $11,565,844 | -$426,391 | -3.56% | |
| Blackbarn Capital Partners Lp | 3.38% | 2,500,000 | $11,250,000 | $10,850,000 | -$400,000 | -3.56% | |
| Legal & General Group Plc | 0.00% | 2,401,389 | $10,806,252 | $10,422,028 | -$384,224 | -3.56% | |
| Woodline Partners Lp | 0.03% | 2,010,172 | $9,045,774 | $8,724,146 | -$321,628 | -3.56% | |
| Jefferies Financial Group Inc. | 0.10% | 1,894,067 | $8,523,302 | $8,220,251 | -$303,051 | -3.56% | |
| Bank Of America Corp | 0.00% | 1,683,628 | $7,576,327 | $7,306,946 | -$269,381 | -3.56% | |
| Charles Schwab Investment Management Inc | 0.00% | 1,401,157 | $6,305,207 | $6,081,021 | -$224,186 | -3.56% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,392,024 | $6,264,108 | $6,041,384 | -$222,724 | -3.56% | |
| Osaic Holdings, Inc. | 0.01% | 1,348,127 | $6,066,571 | $5,850,871 | -$215,700 | -3.56% | |
| Northern Trust Corp | 0.00% | 1,277,859 | $5,750,368 | $5,545,908 | -$204,460 | -3.56% | |
| Goldman Sachs Group Inc | 0.00% | 1,100,434 | $4,951,954 | $4,775,884 | -$176,070 | -3.56% | |
| Vanguard Fiduciary Trust Co | 0.00% | 1,063,054 | $4,783,743 | $4,613,654 | -$170,089 | -3.56% | |
| Citigroup Inc | 0.00% | 879,237 | $4,220,338 | $3,815,889 | -$404,449 | -9.58% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 838,210 | $3,771,945 | $3,637,831 | -$134,114 | -3.56% | |
| Deltroit Asset Management (Uk) Llp | 0.62% | 800,000 | $3,600,000 | $3,472,000 | -$128,000 | -3.56% | |
| Bank Of Montreal | 0.00% | 782,763 | $3,522,434 | $3,397,191 | -$125,243 | -3.56% | |
| Citadel Advisors Llc | 0.00% | 677,138 | $3,047,121 | $2,938,779 | -$108,342 | -3.56% | |
| Millennium Management Llc | 0.00% | 642,448 | $2,891,016 | $2,788,224 | -$102,792 | -3.56% | |
| Western Standard Llc | 1.23% | 521,587 | $2,347,142 | $2,263,688 | -$83,454 | -3.56% | |
| Quinn Opportunity Partners Llc | 0.12% | 514,513 | $2,315,309 | $2,232,986 | -$82,323 | -3.56% | |
| Rangeley Capital, Llc | 2.43% | 500,000 | $2,250,000 | $2,170,000 | -$80,000 | -3.56% | |
| Freestone Capital Holdings, Llc | 0.06% | 442,500 | $2,124,000 | $1,920,450 | -$203,550 | -9.58% | |
| Wellington Management Group Llp | 0.00% | 440,924 | $1,984,158 | $1,913,610 | -$70,548 | -3.56% | |
| Kennedy Capital Management Llc | 0.04% | 393,132 | $1,769,094 | $1,706,193 | -$62,901 | -3.56% | |
| Bank Of New York Mellon Corp | 0.00% | 379,373 | $1,707,179 | $1,646,479 | -$60,700 | -3.56% | |
| Ubs Group Ag | 0.00% | 364,471 | $1,640,121 | $1,581,804 | -$58,317 | -3.56% | |
| Hudson Bay Capital Management Lp | 0.01% | 350,000 | $1,575,000 | $1,519,000 | -$56,000 | -3.56% | |
| Ledgewood Wealth Advisors, Llc | 0.71% | 278,436 | $1,336,493 | $1,208,412 | -$128,081 | -9.58% | |
| Swiss National Bank | 0.00% | 283,400 | $1,275,300 | $1,229,956 | -$45,344 | -3.56% | |
| Carrera Capital Advisors | 0.18% | 257,167 | $1,234,402 | $1,116,105 | -$118,297 | -9.58% | |
| Nuveen, Llc | 0.00% | 259,017 | $1,165,577 | $1,124,134 | -$41,443 | -3.56% | |
| Invesco Ltd. | 0.00% | 247,925 | $1,115,664 | $1,075,995 | -$39,670 | -3.56% | |
| Campbell & Co Investment Adviser Llc | 0.06% | 230,534 | $1,106,563 | $1,000,518 | -$106,045 | -9.58% | |
| Susquehanna International Group, Llp | 0.00% | 241,970 | $1,088,865 | $1,050,150 | -$38,715 | -3.56% | |
| Raymond James Financial Inc | 0.00% | 191,355 | $861,098 | $830,481 | -$30,617 | -3.56% | |
| Strs Ohio | 0.00% | 168,900 | $810,720 | $733,026 | -$77,694 | -9.58% | |
| Rhumbline Advisers | 0.00% | 178,785 | $804,525 | $775,927 | -$28,598 | -3.55% | |
| Deutsche Bank Ag\ | 0.00% | 160,740 | $723,330 | $697,612 | -$25,718 | -3.56% | |
| Wealth Management Associates, Inc. | 0.20% | 147,995 | $710,376 | $642,298 | -$68,078 | -9.58% | |
| Fmr Llc | 0.00% | 145,126 | $653,068 | $629,847 | -$23,221 | -3.56% |
Frequently asked questions about ABUS
Who owns the most ABUS stock?
The largest holders of ABUS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ARBUTUS BIOPHARMA CORP (ABUS).
Is ABUS widely held by superinvestors?
Many widely followed stocks like ABUS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ABUS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.