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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 59 funds opening new positions, 96 increasing their positions, 79 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:

1.3% more ownership

Funds ownership: 75.34%76.64% (+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 +$36.7M
2 +$33.1M
3 +$29.3M
4
BBA
Baker Bros. Advisors
New York
+$14.8M
5
TI
Trexquant Investment
Connecticut
+$7.96M

Top Sellers

1 -$33.2M
2 -$27M
3 -$14.6M
4
Two Sigma Investments
Two Sigma Investments
New York
-$11.1M
5
State Street
State Street
Massachusetts
-$9.93M
Name Holding Trade Value Shares
Change
Change in
Stake
SFM
51
Sphera Funds Management
Israel
$3.21M
Raymond James Financial
52
Raymond James Financial
Florida
$2.68M
Millennium Management
53
Millennium Management
New York
$2.67M
WE
54
Wealth Effects
Massachusetts
$2.62M
AllianceBernstein
55
AllianceBernstein
Tennessee
$2.51M
PP
56
PDT Partners
New York
$2.42M
AQR Capital Management
57
AQR Capital Management
Connecticut
$2.41M
Prudential Financial
58
Prudential Financial
New Jersey
$2.4M
Mirae Asset Global ETFs Holdings
59
Mirae Asset Global ETFs Holdings
Hong Kong
$2.39M
New York State Teachers Retirement System (NYSTRS)
60
New York State Teachers Retirement System (NYSTRS)
New York
$2.35M
Rafferty Asset Management
61
Rafferty Asset Management
New York
$2.24M
Citigroup
62
Citigroup
New York
$2.22M
NICM
63
Neo Ivy Capital Management
New York
$2.18M
Two Sigma Investments
64
Two Sigma Investments
New York
$2.11M
KCM
65
Kornitzer Capital Management
Kansas
$2M
HighTower Advisors
66
HighTower Advisors
Illinois
$1.96M
Man Group
67
Man Group
United Kingdom
$1.88M
Canada Life
68
Canada Life
Manitoba, Canada
$1.84M
PIM
69
Platinum Investment Management
Australia
$1.75M
California State Teachers Retirement System (CalSTRS)
70
California State Teachers Retirement System (CalSTRS)
California
$1.64M
AG
71
Algert Global
California
$1.62M
T. Rowe Price Associates
72
T. Rowe Price Associates
Maryland
$1.59M
OTPPB
73
Ontario Teachers' Pension Plan Board
Ontario, Canada
$1.54M
EHC
74
Everett Harris & Co
California
$1.49M
ACM
75
Aquatic Capital Management
Illinois
$1.48M