Arrowhead Research
ARWR
500 hedge funds and large institutions have $9.73B invested in Arrowhead Research in 2026 Q2 according to their latest regulatory filings, with 127 funds opening new positions, 153 increasing their positions, 156 reducing their positions, and 59 closing their positions.
139% more call options, than puts
Call options by funds: $158M | Put options by funds: $66.2M
115% more first-time investments, than exits
New positions opened: 127 | Existing positions closed: 59
28% more capital invested
Capital invested by funds: $7.58B → $9.73B (+$2.15B)
14% more funds holding
Funds holding: 438 → 500 (+62)
2% less repeat investments, than reductions
Existing positions increased: 153 | Existing positions reduced: 156
1.65% less ownership
Funds ownership: 86.36% → 84.71% (-1.7%)
18% less funds holding in top 10
Funds holding in top 10: 11 → 9 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
First Trust Advisors
Wheaton,
Illinois
|
+$88.9M |
| 2 |
Holocene Advisors
New York
|
+$81.7M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
+$57.1M |
| 4 |
ACA
Avoro Capital Advisors
New York
|
+$48.4M |
| 5 |
Invesco
Atlanta,
Georgia
|
+$44.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$246M |
| 2 |
State Street
Boston,
Massachusetts
|
-$59.2M |
| 3 |
Vanguard Portfolio Management
Malvern,
Pennsylvania
|
-$58.7M |
| 4 |
D.E. Shaw & Co
New York
|
-$55.6M |
| 5 |
Geode Capital Management
Boston,
Massachusetts
|
-$55.3M |
ARWR Hedge Fund Activity: Q2 2026 in Review
500 of the 8,298 institutional investors tracked by Wall St. Rank reported a position in Arrowhead Research (ARWR) for Q2 2026, worth a combined $9.73B — up 28% from $7.58B a quarter earlier.
Buyers outnumbered sellers: 127 funds opened new ARWR positions and 59 closed out — a net gain of 68 holders — while 153 added to existing stakes and 156 trimmed.
The largest buyer was First Trust Advisors, adding an estimated $88.9M. The largest seller was BlackRock, cutting an estimated $246M.
- 500 institutional investors held Arrowhead Research (ARWR) as of Q2 2026, up from 438 in Q1 2026.
- Funds reported $9.73B of Arrowhead Research stock for Q2 2026, up 28% quarter-over-quarter.
- 127 funds opened new Arrowhead Research positions in Q2 2026 and 59 closed out, a net change of +68 holders.
- The largest Arrowhead Research buyer in Q2 2026 was First Trust Advisors, an estimated $88.9M added.
- The largest Arrowhead Research seller in Q2 2026 was BlackRock, an estimated $246M sold.
Based on aggregated 13F filings for Q2 2026.