Arrowhead Research
ARWR
438 hedge funds and large institutions have $7.58B invested in Arrowhead Research in 2026 Q1 according to their latest regulatory filings, with 107 funds opening new positions, 170 increasing their positions, 113 reducing their positions, and 62 closing their positions.
90% more call options, than puts
Call options by funds: $106M | Put options by funds: $55.8M
73% more first-time investments, than exits
New positions opened: 107 | Existing positions closed: 62
50% more repeat investments, than reductions
Existing positions increased: 170 | Existing positions reduced: 113
38% more funds holding in top 10
Funds holding in top 10: 8 → 11 (+3)
9% more funds holding
Funds holding: 401 → 438 (+37)
0.94% more ownership
Funds ownership: 85.42% → 86.36% (+0.94%)
2% less capital invested
Capital invested by funds: $7.71B → $7.58B (-$122M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Invesco
Atlanta,
Georgia
|
+$173M |
| 2 |
FAM
Fred Alger Management
New York
|
+$95.6M |
| 3 |
VPC
Vestal Point Capital
New York
|
+$87M |
| 4 |
HRCM
Hood River Capital Management
Palm Beach Gardens,
Florida
|
+$66.9M |
| 5 |
D.E. Shaw & Co
New York
|
+$65.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$200M |
| 2 |
SPC
Slate Path Capital
New York
|
-$168M |
| 3 |
Arrowstreet Capital
Boston,
Massachusetts
|
-$95M |
| 4 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
-$39.6M |
| 5 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
-$36.7M |
ARWR Hedge Fund Activity: Q1 2026 in Review
438 of the 8,181 institutional investors tracked by Wall St. Rank reported a position in Arrowhead Research (ARWR) for Q1 2026, worth a combined $7.58B — down 1.6% from $7.71B a quarter earlier.
Buyers outnumbered sellers: 107 funds opened new ARWR positions and 62 closed out — a net gain of 45 holders — while 170 added to existing stakes and 113 trimmed.
The largest buyer was Invesco, adding an estimated $173M. The largest seller was BlackRock, cutting an estimated $200M.
- 438 institutional investors held Arrowhead Research (ARWR) as of Q1 2026, up from 401 in Q4 2025.
- Funds reported $7.58B of Arrowhead Research stock for Q1 2026, down 1.6% quarter-over-quarter.
- 107 funds opened new Arrowhead Research positions in Q1 2026 and 62 closed out, a net change of +45 holders.
- The largest Arrowhead Research buyer in Q1 2026 was Invesco, an estimated $173M added.
- The largest Arrowhead Research seller in Q1 2026 was BlackRock, an estimated $200M sold.
Based on aggregated 13F filings for Q1 2026.