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Arrowhead Research

282 hedge funds and large institutions have $1.67B invested in Arrowhead Research in 2025 Q2 according to their latest regulatory filings, with 57 funds opening new positions, 98 increasing their positions, 81 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:

0.07% less ownership

Funds ownership: 76.72%76.65% (-0.07%)

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
282
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
176
$218K
177
$214K
178
$213K
179
$213K
180
$212K
181
$204K
182
$200K
183
$197K
184
$194K
185
$188K
186
$186K
187
$180K
188
$180K
189
$179K
190
$178K
191
$173K
192
$168K
193
$167K
194
$166K
195
$164K
196
$162K
197
$146K
198
$142K
199
$137K
200
$91.6K