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Arrowhead Research

280 hedge funds and large institutions have $1.67B invested in Arrowhead Research in 2025 Q2 according to their latest regulatory filings, with 58 funds opening new positions, 96 increasing their positions, 80 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

1.27% more ownership

Funds ownership: 75.35%76.62% (+1.3%)

22% less call options, than puts

Call options by funds: $8.24M | Put options by funds: $10.6M

40% less funds holding in top 10

Funds holding in top 10: 53 (-2)

Holders
280
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$8.24M
Puts
$10.6M
Net Calls
Net Calls Change

Top Buyers

1 +$33.3M
2 +$30.1M
3 +$26.6M
4
BBA
Baker Bros. Advisors
New York
+$13.5M
5
TI
Trexquant Investment
Connecticut
+$7.23M

Top Sellers

1 -$30.1M
2 -$24.5M
3 -$13.3M
4
Two Sigma Investments
Two Sigma Investments
New York
-$10.1M
5
State Street
State Street
Massachusetts
-$9.01M
Name Holding Trade Value Shares
Change
Change in
Stake
76
$1.46M
77
$1.28M
78
$1.19M
79
$1.18M
80
$1.18M
81
$1.18M
82
$1.14M
83
$1.08M
84
$1.06M
85
$1.02M
86
$1.01M
87
$1.01M
88
$983K
89
$979K
90
$956K
91
$939K
92
$927K
93
$921K
94
$916K
95
$905K
96
$872K
97
$862K
98
$842K
99
$824K
100
$803K