Arbutus Biopharma ABUS Institutional Ownership

NASDAQ ABUS

$4.26 -0.07 (-1.50%)

As of: Oct 21, 2026 · 11:08 AM EDT

Institutions by Trading Activity

176 Institutions

Increased 96 54.5%

Unchanged 39 22.2%

Reduced 41 23.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

71.05%

▲+0.48 pp QoQ

Shares Held by Institutions

140.42Mn

of 197.63Mn outstanding

▲+1.03% QoQ

Shares Outstanding

197.63Mn

57.21Mn held outside 13F filers

Institutional Investors

176

filed 13F for Jun 2026

▲+10 vs prior quarter

Net Shares Added (QoQ)

+1.43Mn

accumulated since last quarter

Value of Holdings

$602.40Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Arbutus Biopharma Corp (NASDAQ:ABUS) counted 176 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

These investors held 71.05% of outstanding shares in Q2 2026, up from 70.57% the quarter before.
Total shares held in ABUS rose 1.03% from Q1 2026; the number of holders rose 10.69% from Q2 2025.
Of the 176 holders, 96 added to their positions, 41 reduced their stakes and 39 left their positions unchanged in Q2 2026.
In total, institutional investors held 140.42Mn shares of Arbutus Biopharma at the end of Q2 2026, up 1.43Mn from the prior quarter and up 46.59Mn from a year earlier.
As of June 30, 2026, Two Seas Capital LP held the largest stake in Arbutus Biopharma with 19.1Mn shares, or 9.66% of shares outstanding.
The biggest increases in ABUS positions during Q2 2026 came from Goldman Sachs Group Inc (+2.41Mn shares), State Street Corp (+1.53Mn shares), Bank of America Corp (+962.57K shares), Rubric Capital Management LP (+906.55K shares) and Whitefort Capital Management, LP (+863.38K shares).
The largest position reductions in ABUS for Q2 2026 were by Morgan Stanley (-8.19Mn shares), ADAR1 Capital Management, LLC (-1.87Mn shares), UBS Asset Management Americas (-577.16K shares), Citadel Advisors LLC (-272.44K shares) and Quinn Opportunity Partners LLC (-259.3K shares).
Arbutus Biopharma's 10 largest institutional shareholders as of Q2 2026 were Two Seas Capital LP (19.1Mn shares), Morgan Stanley (17.7Mn shares), Whitefort Capital Management, LP (15.79Mn shares), BlackRock, Inc. (13.77Mn shares), State Street Corp (7.87Mn shares), Rubric Capital Management LP (7.53Mn shares), Vanguard Capital Management LLC (7.01Mn shares), Barclays PLC (4.21Mn shares), Geode Capital Management, LLC (4.12Mn shares) and Goldman Sachs Group Inc (3.51Mn shares), per Business Quant data.

Form 13F Holdings

176 Institutional Holders

Report period 30 Jun, 2026

Total shares held 140.42Mn

Of outstanding 71.05%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Two Seas Capital LP	0001823138	19,095,583	9.66%	▲538,040	+2.90%	$91.66Mn
2	Morgan Stanley	0000895421	17,698,305	8.96%	▼8,193,175	-31.64%	$84.95Mn
3	Whitefort Capital Management, LP	0001884931	15,794,261	7.99%	▲863,376	+5.78%	$75.81Mn
4	BlackRock, Inc.	0002012383	13,766,071	6.97%	▲799,125	+6.16%	$66.08Mn
5	State Street Corp	0000093751	7,869,179	3.98%	▲1,526,669	+24.07%	$37.77Mn
6	Rubric Capital Management LP	0001687509	7,532,937	3.81%	▲906,548	+13.68%	$36.16Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	7,010,679	3.55%	▲321,768	+4.81%	$33.65Mn
8	Barclays Plc	0000312069	4,207,914	2.13%	▼108,181	-2.51%	$20.20Mn
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	4,117,691	2.08%	▲345,885	+9.17%	$19.77Mn
10	Goldman Sachs Group Inc	0000886982	3,506,802	1.77%	▲2,406,368	+218.67%	$16.83Mn
11	Bank Of America Corp /De/	0000070858	2,646,197	1.34%	▲962,569	+57.17%	$12.70Mn
12	BlackBarn Capital Partners LP	0002010204	2,500,000	1.26%	0	0.00%	$12.00Mn
13	Legal & General Group Plc	0000764068	2,466,127	1.25%	▲64,738	+2.70%	$11.84Mn
14	Woodline Partners LP	0001784547	2,281,856	1.15%	▲271,684	+13.52%	$10.95Mn
15	Jefferies Financial Group Inc.	0000096223	1,711,672	0.87%	▼182,395	-9.63%	$8.22Mn
16	Nomura Holdings Inc	0001163653	1,637,081	0.83%	▲1,637,081	0.00%	$7.86Mn
17	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,541,458	0.78%	▲149,434	+10.74%	$7.40Mn
18	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	1,431,218	0.72%	▲30,061	+2.15%	$6.87Mn
19	Northern Trust Corp	0000073124	1,419,024	0.72%	▲141,165	+11.05%	$6.81Mn
20	OSAIC HOLDINGS, INC.	0001677044	1,347,866	0.68%	▼261	-0.02%	$6.47Mn

Showing 1 to 20 of 176 holders