Latest Period
Q1 2026
Security Snapshot
ARROWHEAD PHARMACEUTICALS INC - COMMON STOCK Institutional Ownership
CUSIP: 04280A100
13F Institutional Holders and Ownership History from Q4 2023 to Q1 2026
Institutions Reporting
19
Shares (Excl. Options)
846,226
Price
$0.06
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- Security type / class
- Equity / COMMON STOCK
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 846,226
- Total 13F value
- $2,803,580
- Share change
- 0
- Number of holders
- 19
- Shares outstanding
- 125,338,063
- SEC-reported price per share
- $0.06
Latest holder snapshot
2 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- 04280A100 - ARROWHEAD PHARMACEUTICALS INC - COMMON STOCK is tracked under CUSIP 04280A100.
- 19 institutions reported positions in Q1 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 4 to 19 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $1,475,927,776 to $2,803,580.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 19 institutions filings for Q1 2026.
Security key
04280A100
Latest holder period
Q1 2026
13F holders
19
13D/G owners
1
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 04280A100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
04280A100
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| STATE STREET CORP | 4.8% | 6,016,227 | STATE STREET CORPORATION | 31 Dec 2024 |
As of 31 Mar 2026, 19 institutional investors reported holding 846,226 shares of ARROWHEAD PHARMACEUTICALS INC - COMMON STOCK. This represents 0.68% of the company’s total 125,338,063 outstanding shares.
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
6
Latest
Q1 2026
Rows shown
1-6 of 6
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 846,226 | $2,803,580 | $0.06 | 19 | |
| 2025 Q4 | 22,231,176 | $1,475,927,776 | -$589,144 | $66.39 | 4 |
| 2024 Q3 | 6,354,331 | $123,083,391 | +$10,005,941 | $19.37 | 1 |
| 2024 Q2 | 21,520,968 | $559,329,958 | -$10,041,809 | $25.99 | 2 |
| 2024 Q1 | 21,907,340 | $626,549,925 | +$50,864,299 | $28.60 | 2 |
| 2023 Q4 | 20,128,868 | $615,943,362 | $30.60 | 2 |