Arrowhead Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US04280A1007

SecurityARWR / Arrowhead Pharmaceuticals, Inc.
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Macquarie Group Ltd closes position in ARWR / Arrowhead Pharmaceuticals, Inc.

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 0 shares of Arrowhead Pharmaceuticals, Inc. (US:ARWR) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 4,182 shares of Arrowhead Pharmaceuticals, Inc.. The current value of the position is $0 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 IN COM 04280A100 0 -100.00 0
2026-02-13 2025-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 4,182 -68,258 -94.23 278 -88.91
2025-11-13 2025-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 72,440 72,440 2,498 0.0029
2023-06-01 2023-03-31 13F/A-1 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -325 -100.00 0 -100.00
2023-05-15 2023-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -325 0
2023-02-21 2022-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 325 -1,562 -82.78 13 -87.00 0.0000
2022-11-14 2022-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 1,887 -581 -23.54 100 14.94 0.0001
2022-08-17 2022-06-30 13F/A-1 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 2,468 0 0.00 87 -23.68 0.0001
2022-08-15 2022-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 2,468 0 87 0.0000
2022-05-16 2022-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 2,468 -32,982 -93.04 114 -95.15 0.0001
2022-02-11 2021-12-31 13F Arrowhead Pharmaceuticals COM 04280A100 35,450 505 1.45 2,351 7.79 0.0020
2021-11-12 2021-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 34,945 -27,009 -43.60 2,181 -57.49 0.0019
2021-08-13 2021-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 61,954 14,643 30.95 5,131 63.56 0.0042
2021-05-14 2021-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 47,311 -8,437 -15.13 3,137 -26.67 0.0044
2021-02-16 2020-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 55,748 13,264 31.22 4,278 133.90 0.0062
2020-11-13 2020-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 42,484 -2,970 -6.53 1,829 -6.83 0.0031
2020-08-11 2020-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 45,454 9,298 25.72 1,963 88.75 0.0034
2020-05-15 2020-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 36,156 22,056 156.43 1,040 16.33 0.0021
2020-03-18 2019-12-31 13F/A-2 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 14,100 14,100 0.00 894 0.00 0.0013
2020-02-28 2019-12-31 13F/A-1 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 14,100 0 894 0.0013
2020-02-14 2019-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 14,100 14,100 894 1,121.8942
2019-02-15 2018-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -200 -100.00 0 -100.00
2018-11-15 2018-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 200 -10,900 -98.20 4 -97.35 0.0000
2019-03-21 2018-06-30 13F/A-1 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 11,100 11,100 151 0.0003
2018-08-14 2018-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 11,100 11,100 151
2018-05-11 2018-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -33,400 -100.00 0 -100.00
2018-02-14 2017-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 33,400 33,400 123 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.