Institutional Ownership
Arrowhead Pharmaceuticals In
CUSIP 04280A100COMARWRQ1 2026
13D / 13G Filings
31
Schedule 13D/13G on record
Beneficial Filers
10
Distinct reporting persons
Largest Stake
15.0%
Max % of class reported
Institutional Holders
423
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
31 filings · latest Jan 21, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 21, 2026 | Blackrock, Inc. | 13G/A | 15.0% | 20.32M | SEC |
| 2 | Aug 15, 2025 | Sarepta Therapeutics, Inc. | 13D/A | — | — | SEC |
| 3 | Aug 14, 2025 | Avoro Capital Advisors LLC | 13G/A | 8.3% | 11.52M | SEC |
| 4 | Aug 11, 2025 | State Street Corporation | 13G | 4.6% | 6.37M | SEC |
| 5 | Jul 29, 2025 | The Vanguard Group | 13G/A | 11.2% | 15.53M | SEC |
| 6 | May 13, 2025 | State Street Corporation | 13G | 5.1% | 7.00M | SEC |
| 7 | Apr 23, 2025 | Blackrock, Inc. | 13G/A | 13.8% | 19.01M | SEC |
| 8 | Feb 14, 2025 | Sarepta Therapeutics, Inc. | 13D | 9.5% | — | SEC |
| 9 | Feb 14, 2025 | Avoro Capital Advisors LLC | 13G/A | 9.6% | 12.03M | SEC |
| 10 | Feb 5, 2025 | State Street Corporation | 13G | 4.8% | 6.02M | SEC |
21 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Arrowhead Pharmaceuticals In.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 18.16M | $1.14B |
| 2 | Avoro Capital Advisors LLC | 10.70M | $670.89M |
| 3 | Fmr LLC | 7.27M | $455.62M |
| 4 | State Street Corp | 6.50M | $407.31M |
| 5 | Geode Capital Management, LLC | 4.28M | $274.50M |
| 6 | Fred Alger Management, LLC | 3.34M | $209.57M |
| 7 | Invesco Ltd. | 3.28M | $205.70M |
| 8 | Vestal Point Capital, LP | 2.27M | $142.64M |
| 9 | Baker Bros. Advisors LP | 1.99M | $124.95M |
| 10 | Goldman Sachs Group Inc | 1.74M | $109.09M |