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Arbutus Biopharma Ownership | Who Owns Arbutus Biopharma?

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Arbutus Biopharma Ownership Summary

Arbutus Biopharma is owned by 69.85% institutional investors, 20.46% insiders, and 9.69% 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

TypeName% Inst% Insiders% Retail
StockArbutus Biopharma69.85%20.46%9.69%
SectorHealthcare Stocks 35.56%12.08%52.36%
IndustryBiotech Stocks 35.43%12.01%52.56%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Two seas capital lp19.10M9.85%$91.66M
Morgan stanley17.70M9.13%$84.95M
Whitefort capital management, lp14.93M7.79%$67.19M
Blackrock funding, inc. /de13.77M7.10%$66.08M
Blackrock11.55M6.58%$35.70M
Vanguard group9.24M4.82%$44.46M
State street7.87M4.06%$37.77M
Vanguard capital management7.01M3.62%$33.65M
Rubric capital management lp6.63M3.46%$29.82M
Barclays4.32M2.25%$19.42M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Whitefort capital management, lp14.93M19.81%$67.19M
Fourworld capital management1.02M7.32%$4.63M
Corbin capital partners682.49K3.64%$2.23M
Foursixthree capital lp1.98M2.47%$8.98M
Rangeley capital500.00K2.19%$2.25M
Two seas capital lp19.10M1.82%$91.66M
Adar1 capital management2.90M1.24%$13.18M
Blackbarn capital partners lp2.50M0.91%$11.25M
Western standard542.79K0.88%$2.61M
Ledgewood wealth advisors278.44K0.71%$1.34M

Top Buyers

HolderShares% AssetsChange
Rubric capital management lp6.63M0.32%5.05M
Barclays4.32M0.00%3.96M
Legal & general group2.40M0.00%2.28M
Jefferies financial group1.89M0.06%1.89M
Whitefort capital management, lp14.93M19.81%1.59M

Top Sellers

HolderShares% AssetsChange
Morgan stanley17.70M0.00%-8.19M
Adage capital partners gp2.66M0.02%-1.68M
Stempoint capital lp---986.75K
Abrdn---799.98K
Foursixthree capital lp1.98M2.47%-578.39K

New Positions

HolderShares% AssetsChangeValue
Jefferies financial group1.89M0.06%1.89M$8.52M
Mackenzie financial613.81K0.00%613.81K$2.95M
Centerbook partners lp445.15K0.10%445.15K$2.14M
Murchinson200.00K0.12%200.00K$908.00K
Martingale asset management l p193.10K0.02%193.10K$926.88K

Sold Out

HolderChange
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

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 2026168-11.58%133,826,4379.67%691.73%74-6.33%479.30%
Dec 31, 202593-49.46%44,562,587-62.29%230.61%35-56.79%21-58.82%
Sep 30, 202575-54.55%31,275,575-65.40%160.73%29-61.33%24-44.19%
Jun 30, 2025173-6.49%118,008,1585.57%611.79%796.76%43-18.87%
Mar 31, 20259-94.48%30,187,875-70.98%160.54%8-89.19%--100.00%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard US Total Market Shares ETF4.92M2.57%-
Vanguard Morn Total Stk Mkt Idx Investor5.03M2.55%222.70K
Vanguard Total Stock Mkt Idx Inv5.03M2.55%222.70K
Morgan Stanley Insight A4.24M2.23%399.58K
iShares Russell 2000 ETF4.02M2.04%-71.42K
Morgan Stanley Insight3.83M1.95%-101.83K
Morgan Stanley Insight I3.83M1.95%-101.83K
State Street® SPDR® S&P® Biotech ETF3.62M1.83%8.31K
MS INVF Global Insight Z2.50M1.27%-
Morgan Stanley Inception2.03M1.03%-121.90K

Recent Insider Transactions

DateNameRoleActivityValue
Feb 04, 2025HASTINGS DAVID C Chief Financial OfficerSell$72.83K
Feb 04, 2025Sims Karen Chief Medical OfficerSell$63.52K
Feb 04, 2025McElhaugh Michael J. Interim President & CEOSell$78.10K
Feb 04, 2025Naftzger J. Christopher General Counsel and CCOSell$37.21K
Aug 14, 2024MANCHESTER KEITH S-Sell$32.64K

Insider Transactions Trends

DateBuySell
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 69.85%, followed by 20.46% insiders and 9.69% retail investors. The average institutional ownership in Arbutus Biopharma's industry, Biotech Stocks , is 35.43%, 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 (14.93M shares, 7.79%). Together, they hold 26.78% 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 19.81% of its assets in 14.93M Arbutus Biopharma shares, valued at 67.19M$.

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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