Arbutus Biopharma ABUS Institutional Ownership

NASDAQ ABUS

$4.69 -0.17 (-3.50%)

At close: Sep 29, 2026 · 4:00 PM EDT

Institutions by Trading Activity

177 Institutions

Increased 97 54.8%

Unchanged 39 22.0%

Reduced 41 23.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

71.83%

▲+0.11 pp QoQ

Shares Held by Institutions

141.85Mn

of 197.47Mn outstanding

▲+5.25% QoQ

Shares Outstanding

197.47Mn

55.62Mn held outside 13F filers

Institutional Investors

177

filed 13F for Jun 2026

▲+10 vs prior quarter

Net Shares Added (QoQ)

+7.08Mn

accumulated since last quarter

Value of Holdings

$689.39Mn

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

Quarter ending 30 Jun, 2026

Arbutus Biopharma Corp (NASDAQ:ABUS) has 177 institutional investors with active 13F positions as of June 2026.

Collectively, these holders controlled 71.8% of Arbutus Biopharma's outstanding shares in June 2026, up from 71.7% in March 2026.
Their total shares held in ABUS increased 5.25% from the prior quarter, while the number of investors in Arbutus Biopharma increased 9.94% year over year.
During the quarter, 97 of these 177 funds increased positions in ABUS, 41 reduced exposure, and 39 held steady.
Altogether, these fund groups held 141.85Mn shares in ABUS by June 2026, up by 7.08Mn shares quarter on quarter, and up 48.02Mn shares year over year.
As of June 30, 2026, Two Seas Capital LP held the largest stake in Arbutus Biopharma with 19.1Mn shares, accounting for 9.67% of total shares outstanding.
The most significant purchases of ABUS for the quarter ending June 2026 came from Goldman Sachs Group Inc (2.41Mn), Nomura Holdings Inc (1.64Mn), State Street Corp (1.53Mn), Sixth Street Partners Management Company, L.P. (1.43Mn), Bank Of America Corp /De/ (962.57K).
Leading sellers of Arbutus Biopharma shares for the quarter ending June 2026 were Morgan Stanley (8.19Mn), ADAR1 Capital Management, LLC (1.87Mn), UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (577.16K), CITADEL ADVISORS LLC (272.44K), Quinn Opportunity Partners LLC (259.3K).
Per Business Quant data, the top 10 holders of Arbutus Biopharma for the quarter ending June 2026 are Two Seas Capital LP (19.1Mn), Morgan Stanley (17.7Mn), Whitefort Capital Management, LP (15.79Mn), BlackRock, Inc. (13.77Mn), State Street Corp (7.87Mn), Rubric Capital Management LP (7.53Mn), VANGUARD CAPITAL MANAGEMENT LLC (7.01Mn), Barclays Plc (4.21Mn), GEODE CAPITAL MANAGEMENT, LLC (4.12Mn), Goldman Sachs Group Inc (3.51Mn).

Form 13F Holdings

177 Institutional Holders

Report period 30 Jun, 2026

Total shares held 141.85Mn

Of outstanding 71.83%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Two Seas Capital LP	0001823138	19,095,583	9.67%	▲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	8.00%	▲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	2.09%	▲345,885	+9.17%	$19.77Mn
10	Goldman Sachs Group Inc	0000886982	3,506,802	1.78%	▲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	1.27%	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	1.16%	▲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	Sixth Street Partners Management Company, L.P.	0001812095	1,431,218	0.72%	▲1,431,218	0.00%	$6.87Mn
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

Showing 1 to 20 of 177 holders