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Arbutus Biopharma

166 hedge funds and large institutions have $536M invested in Arbutus Biopharma in 2025 Q3 according to their latest regulatory filings, with 21 funds opening new positions, 51 increasing their positions, 54 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more first-time investments, than exits

New positions opened: | Existing positions closed:

2% more funds holding

Funds holding: 162166 (+4)

0.03% less ownership

Funds ownership: 61.67%61.64% (-0.03%)

6% less repeat investments, than reductions

Existing positions increased: 51 | Existing positions reduced: 54

Holders
166
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
5
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$12.5M
Puts
$3.26M
Net Calls
Net Calls Change

Top Buyers

1 +$8.96M
2 +$2.15M
3 +$2.01M
4
WSL
Western Standard LLC
California
+$1.87M
5
Morgan Stanley
Morgan Stanley
New York
+$1.06M

Top Sellers

1 -$3.31M
2 -$3.18M
3 -$2.22M
4
SCM
Saba Capital Management
New York
-$2.14M
5
FC
Foursixthree Capital
New York
-$2.12M
Name Holding Trade Value Shares
Change
Change in
Stake
51
$597K
52
$564K
53
$541K
54
$512K
55
$489K
56
$456K
57
$454K
58
$446K
59
$433K
60
$408K
61
$406K
62
$399K
63
$377K
64
$374K
65
$360K
66
$343K
67
$339K
68
$335K
69
$335K
70
$333K
71
$307K
72
$300K
73
$291K
74
$286K
75
$277K