Arrowhead Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US04280A1007

SecurityARWR / Arrowhead Pharmaceuticals, Inc.
InstitutionIFP Advisors, Inc
Latest Disclosed Ownership8,704 shares
Latest Disclosed Value $ 545,741
IFP Advisors, Inc reports 0.01% increase in ownership of ARWR / Arrowhead Pharmaceuticals, Inc.

On April 13, 2026 - IFP Advisors, Inc filed a 13F-HR form disclosing ownership of 8,704 shares of Arrowhead Pharmaceuticals, Inc. (US:ARWR) valued at $545,741 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 8,703 shares of Arrowhead Pharmaceuticals, Inc.. This represents a change in shares of 0.01% during the quarter. The current value of the position is $631,475 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)
2026-04-13 2026-03-31 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 8,704 1 0.01 546 -5.55 0.0113
2026-02-06 2025-12-31 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 8,703 -6,416 -42.44 578 10.75 0.0130
2026-02-06 2025-09-30 13F/A-1 ARROWHEAD PHARMACEUTICALS INCOM cs 04280A100 15,119 253 1.70 521 117.08 0.0135
2025-12-02 2025-09-30 13F ARROWHEAD PHARMACEUTICALS INCOM cs 04280A100 14,593 -273 540 0.0139
2025-07-24 2025-06-30 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 14,866 -947 -5.99 241 19.40 0.0068
2025-05-05 2025-03-31 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 15,813 -4,955 -23.86 201 -48.46 0.0062
2025-02-04 2024-12-31 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 20,768 -1,745 -7.75 390 -10.55 0.0128
2025-02-04 2024-09-30 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 22,513 -2,500 -9.99 436 -32.92 0.0157
2024-07-30 2024-06-30 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 25,013 0 0.00 650 -9.09 0.0258
2024-07-30 2024-03-31 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 25,013 -1,300 -4.94 715 -11.18 0.0314
2024-01-09 2023-12-31 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 26,313 0 0.00 805 13.86 0.0380
2023-10-12 2023-09-30 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 26,313 3,411 14.89 707 -13.36 0.0318
2023-08-14 2023-06-30 13F/A-1 ARROWHEAD PHARMACEUTICALS IN cs 04280A100 22,902 -3,751 -14.07 817 181.38 0.0342
2023-08-04 2023-06-30 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 22,902 -3,751 250 0.0116
2023-04-18 2023-03-31 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 26,653 -2,764 -9.40 291 0.0127
2023-02-07 2022-12-31 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 29,417 4,857 19.78 0 -100.00 0.0088
2022-11-08 2022-09-30 13F ARROWHEAD PHARMACEUTICALS IN cs 04280A100 24,560 771 3.24 277 3.75 0.0072
2022-09-06 2022-06-30 13F/A-1 ARROWHEAD PHARMACEUTICALS IN cs 04280A100 23,789 0 0.00 267 0.00 0.0086
2022-09-06 2022-03-31 13F/A-1 ARROWHEAD PHARMACEUTICALS IN cs 04280A100 23,789 2,307 10.74 267 -81.25 0.0086
2022-08-08 2022-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 21,519 37 240 0.0049
2022-01-12 2021-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 21,482 70 0.33 1,424 6.27 0.0278
2021-10-06 2021-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 21,412 517 2.47 1,340 -22.72 0.0268
2021-07-13 2021-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 20,895 2,392 12.93 1,734 41.21 0.0359
2021-04-30 2021-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 18,503 -95 -0.51 1,228 -14.01 0.0239
2021-01-25 2020-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 18,598 -924 -4.73 1,428 70.00 0.0579
2020-10-29 2020-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 19,522 933 5.02 840 5.79 0.0501
2020-08-05 2020-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 18,589 1,382 8.03 794 50.09 0.0629
2020-05-12 2020-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 17,207 3,910 29.41 529 -38.77 0.0534
2020-01-17 2019-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 13,297 -5,599 -29.63 864 70.08 0.0649
2019-11-07 2019-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Stock 04280A100 18,896 18,896 508 0.0340
2019-05-15 2019-03-31 13F ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 0 -18,216 -100.00 0 -100.00
2019-06-03 2018-12-31 13F/A-10 ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 18,216 15,216 507.20 217 274.14 0.0132
2019-01-23 2018-12-31 13F ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 18,216 15,216 217 0.0132
2019-06-03 2018-09-30 13F/A-9 ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 3,000 1,500 100.00 58 190.00 0.0024
2018-10-25 2018-09-30 13F ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 3,000 1,500 58 0.0024
2019-06-03 2018-06-30 13F/A-8 ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 1,500 1,500 20 0.0008
2018-08-07 2018-06-30 13F ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 1,500 1,500 20
2016-11-04 2016-09-30 13F ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 0 -1,900 -100.00 0 -100.00
2019-06-03 2016-06-30 13F/A-2 ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 1,900 0 0.00 10 11.11 0.0006
2016-08-22 2016-06-30 13F ARROWHEAD PHARMACEUTICALS INC COM Stock 04280A100 1,900 0 10
2016-05-02 2016-03-31 13F ARROWHEAD RESH CORP COM Stock 04280A100 1,900 1,900 9 0.0005
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.