Arrowhead Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US04280A1007

SecurityARWR / Arrowhead Pharmaceuticals, Inc.
InstitutionVan Eck Associates Corp
Latest Disclosed Ownership18,890 shares
Latest Disclosed Value $ 1,184
Van Eck Associates Corp reports 193.46% increase in ownership of ARWR / Arrowhead Pharmaceuticals, Inc.

On May 15, 2026 - Van Eck Associates Corp filed a 13F-HR form disclosing ownership of 18,890 shares of Arrowhead Pharmaceuticals, Inc. (US:ARWR) valued at $1,184,403 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 6,437 shares of Arrowhead Pharmaceuticals, Inc.. The current value of the position is $1,370,470 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F Arrowhead Pharmaceuticals COM 04280A100 18,890 12,453 193.46 1 0.0008
2026-02-13 2025-12-31 13F Arrowhead Pharmaceuticals COM 04280A100 6,437 3,261 102.68 0 0.0004
2025-11-13 2025-09-30 13F Arrowhead Pharmaceuticals COM 04280A100 3,176 62 1.99 0 0.0001
2025-08-14 2025-06-30 13F Arrowhead Pharmaceuticals COM 04280A100 3,114 -68 -2.14 0 0.0001
2025-05-15 2025-03-31 13F Arrowhead Pharmaceuticals COM 04280A100 3,182 204 6.85 0 0.0001
2025-01-29 2024-12-31 13F Arrowhead Pharmaceuticals COM 04280A100 2,978 1,250 72.34 0 0.0001
2024-10-29 2024-09-30 13F Arrowhead Pharmaceuticals COM 04280A100 1,728 -1,250 -41.97 0 0.0000
2024-07-31 2024-06-30 13F Arrowhead Pharmaceuticals COM 04280A100 2,978 -252 -7.80 0 0.0001
2024-04-30 2024-03-31 13F Arrowhead Pharmaceuticals COM 04280A100 3,230 835 34.86 0 0.0001
2024-02-05 2023-12-31 13F Arrowhead Pharmaceuticals COM 04280A100 2,395 447 22.95 0 0.0001
2023-11-08 2023-09-30 13F Arrowhead Pharmaceuticals COM 04280A100 1,948 0 0.00 0 0.0001
2023-08-03 2023-06-30 13F Arrowhead Pharmaceuticals COM 04280A100 1,948 -184 -8.63 0 0.0002
2023-05-03 2023-03-31 13F Arrowhead Pharmaceuticals COM 04280A100 2,132 46 2.21 0 0.0001
2023-02-08 2022-12-31 13F Arrowhead Pharmaceuticals COM 04280A100 2,086 511 32.44 0 -100.00 0.0002
2022-10-27 2022-09-30 13F Arrowhead Pharmaceuticals COM 04280A100 1,575 1,575 52 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.