Arbutus Biopharma Ownership | Who Owns Arbutus Biopharma?

Overview Forecast RevenueFinancials Chart

Arbutus Biopharma Ownership Summary

Arbutus Biopharma is owned by 73.19% institutional investors, 20.43% insiders, and 6.38% retail investors. Two seas capital lp is the largest institutional shareholder, holding 9.85% of ABUS shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.57% of its assets in Arbutus Biopharma shares.

ABUS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Arbutus Biopharma	73.19%	20.43%	6.38%
Sector	Healthcare Stocks	50.53%	12.40%	37.07%
Industry	Biotech Stocks	48.96%	12.12%	38.92%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Two seas capital lp	19.10M	9.85%	$91.66M
Morgan stanley	17.70M	9.13%	$84.95M
Whitefort capital management, lp	15.79M	8.15%	$75.81M
Blackrock funding, inc. /de	13.77M	7.10%	$66.08M
Blackrock	11.55M	6.58%	$35.70M
Vanguard group	9.24M	4.82%	$44.46M
State street	7.87M	4.06%	$37.77M
Rubric capital management lp	7.53M	3.89%	$36.16M
Vanguard capital management	7.01M	3.62%	$33.65M
Barclays	4.21M	2.17%	$20.20M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Whitefort capital management, lp	15.79M	18.69%	$75.81M
Fourworld capital management	1.02M	7.32%	$4.63M
Corbin capital partners	682.49K	3.64%	$2.23M
Foursixthree capital lp	1.98M	2.47%	$8.98M
Rangeley capital	500.00K	2.19%	$2.40M
Two seas capital lp	19.10M	1.82%	$91.66M
Blackbarn capital partners lp	2.50M	1.01%	$12.00M
Western standard	542.79K	0.88%	$2.61M
Ledgewood wealth advisors	278.44K	0.71%	$1.34M
Rubric capital management lp	7.53M	0.33%	$36.16M

Top Buyers

Holder	Shares	% Assets	Change
Goldman sachs group	3.51M	0.00%	2.41M
Jefferies financial group	1.89M	0.06%	1.89M
Nomura	1.64M	0.01%	1.64M
State street	7.87M	0.00%	1.53M
Sixth street partners management company	1.43M	0.00%	1.43M

Top Sellers

Holder	Shares	% Assets	Change
Morgan stanley	17.70M	0.00%	-8.19M
Adage capital partners gp	-	-	-2.66M
Adar1 capital management	1.27M	0.28%	-1.87M
Stempoint capital lp	-	-	-986.75K
Abrdn	-	-	-799.98K

New Positions

Holder	Shares	% Assets	Change	Value
Jefferies financial group	1.89M	0.06%	1.89M	$8.52M
Sixth street partners management company	1.43M	0.00%	1.43M	$6.87M
Mackenzie financial	613.81K	0.00%	613.81K	$2.95M
Centerbook partners lp	445.15K	0.10%	445.15K	$2.14M
Murchinson	200.00K	0.12%	200.00K	$908.00K

Sold Out

Holder	Change
Hughes financial services	-1.00
Nelson, van denburg & campbell wealth management group	-24.00
Private wealth asset management	-51.00
Central trust	-100.00
Opal wealth advisors	-100.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	180	2.86%	141,816,357	2.04%	73	1.42%	99	30.26%	39	-22.00%
Mar 31, 2026	168	-11.58%	133,826,437	9.67%	69	1.73%	74	-6.33%	47	9.30%
Dec 31, 2025	93	-49.46%	44,562,587	-62.29%	23	0.61%	35	-56.79%	21	-58.82%
Sep 30, 2025	75	-54.55%	31,275,575	-65.40%	16	0.73%	29	-61.33%	24	-44.19%
Jun 30, 2025	173	-6.49%	118,008,158	5.57%	61	1.79%	79	6.76%	43	-18.87%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	4.92M	2.57%	-
Vanguard Morn Total Stk Mkt Idx Investor	5.03M	2.55%	222.70K
Vanguard Total Stock Mkt Idx Inv	5.03M	2.55%	222.70K
Vanguard MStar Total Stk Mkt Idx Invest	5.03M	2.55%	-
Morgan Stanley Insight A	4.24M	2.23%	399.58K
iShares Russell 2000 ETF	4.02M	2.04%	-71.42K
State Street® SPDR® S&P® Biotech ETF	3.62M	1.83%	8.31K
Morgan Stanley Insight	2.73M	1.38%	-1.11M
Morgan Stanley Insight I	2.73M	1.38%	-1.11M
MS INVF Global Insight Z	2.50M	1.27%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Feb 04, 2025	HASTINGS DAVID C	Chief Financial Officer	Sell	$72.83K
Feb 04, 2025	Sims Karen	Chief Medical Officer	Sell	$63.52K
Feb 04, 2025	McElhaugh Michael J.	Interim President & CEO	Sell	$78.10K
Feb 04, 2025	Naftzger J. Christopher	General Counsel and CCO	Sell	$37.21K
Aug 14, 2024	MANCHESTER KEITH S	-	Sell	$32.64K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	-
2026 Q1	-	-
2025 Q3	-	-
2025 Q1	-	4
2024 Q3	-	1

ABUS Ownership FAQ

Who Owns Arbutus Biopharma?

Arbutus Biopharma shareholders are primarily institutional investors at 73.19%, followed by 20.43% insiders and 6.38% retail investors. The average institutional ownership in Arbutus Biopharma's industry, Biotech Stocks , is 48.96%, which Arbutus Biopharma exceeds.

Who owns the most shares of Arbutus Biopharma?

Arbutus Biopharma’s largest shareholders are Two seas capital lp (19.1M shares, 9.85%), Morgan stanley (17.7M shares, 9.13%), and Whitefort capital management, lp (15.79M shares, 8.15%). Together, they hold 27.14% of Arbutus Biopharma’s total shares outstanding.

Does Blackrock own Arbutus Biopharma?

Yes, BlackRock owns 6.58% of Arbutus Biopharma, totaling 11.55M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 35.7M$. In the last quarter, BlackRock increased its holdings by 1.15M shares, a 11.03% change.

Who is Arbutus Biopharma’s biggest shareholder by percentage of total assets invested?

Whitefort capital management, lp is Arbutus Biopharma’s biggest shareholder by percentage of total assets invested, with 18.69% of its assets in 15.79M Arbutus Biopharma shares, valued at 75.81M$.

Who is the top mutual fund holder of Arbutus Biopharma shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of Arbutus Biopharma shares, with 2.57% of its total shares outstanding invested in 4.92M Arbutus Biopharma shares.

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