Arrowhead Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US04280A1007

SecurityARWR / Arrowhead Pharmaceuticals, Inc.
InstitutionWalleye Capital LLC
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Walleye Capital LLC ownership in ARWR / Arrowhead Pharmaceuticals, Inc.

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A 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 1,312 shares of Arrowhead Pharmaceuticals, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (ARWR) in the form of stock options. The firm currently holds call options representing 14,900 of underlying shares valued at $934,230 USD and put options representing 4,100 of underlying shares valued at $257,070 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

ARWR / Arrowhead Pharmaceuticals, Inc. Historical Put/Call Ratio
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)
2026-05-13 2026-03-31 13F/A-1 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -1,312 -100.00 0 -100.00
2026-05-08 2026-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -1,312 0
2026-02-13 2025-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 1,312 -12,178 -90.27 87 -81.29 0.0003
2025-11-14 2025-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 13,490 13,490 465 0.0017
2025-08-13 2025-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -93,041 -100.00 0 -100.00
2025-05-14 2025-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 93,041 -80,360 -46.34 1,185 -63.64 0.0053
2025-02-13 2024-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 173,401 135,832 361.55 3,260 348.28 0.0080
2024-11-14 2024-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 37,569 37,469 37,469.00 728 36,250.00 0.0015
2024-08-14 2024-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 100 100 3 0.0000
2024-05-15 2024-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -12,154 -100.00 0 -100.00
2024-02-14 2023-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 12,154 12,154 372 0.0008
2022-11-14 2022-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -6,213 -100.00 0 -100.00
2022-08-19 2022-06-30 13F/A-1 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 6,213 -17,330 -73.61 219 -79.78 0.0060
2022-08-08 2022-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 6,213 -17,330 219 0.0060
2022-05-27 2022-03-31 13F/A-01 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 23,543 23,543 1,083 0.0289
2022-05-16 2022-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 23,543 23,543 1,083 0.0220
2021-08-16 2021-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -3,980 -100.00 0 -100.00
2021-05-17 2021-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 3,980 3,980 264 0.0153
2019-08-14 2019-03-31 13F/A-1 ARROWHEAD PHARMACEUTICALS IN COM 04280A100 0 -9,416 -100.00 0 -100.00
2018-11-14 2018-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM 04280A100 9,416 9,416 181 0.0845
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A ARROWHEAD PHARMACEUTICALS IN COM Call 14,900 -75.04 934 -76.43 n/a n/a n/a
2026-05-08 2026-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 14,900 934 n/a n/a n/a
2026-02-13 2025-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 59,700 338.97 3,963 744.99 n/a n/a n/a
2025-11-14 2025-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Call 13,600 -33.98 469 44.31 n/a n/a n/a
2025-08-13 2025-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Call 20,600 -56.45 325 -46.01 n/a n/a n/a
2025-05-14 2025-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 47,300 35.14 603 -8.51 n/a n/a n/a
2025-02-13 2024-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 35,000 525.00 658 509.26 n/a n/a n/a
2024-11-14 2024-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Call 5,600 -61.64 108 -71.50 n/a n/a n/a
2024-08-14 2024-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Call 14,600 379 n/a n/a n/a
2023-11-21 2023-09-30 13F/A ARROWHEAD PHARMACEUTICALS IN COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-11-14 2023-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Call 0 0 n/a n/a n/a
2023-08-14 2023-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Call 1,600 -84.62 57 -78.41 n/a n/a n/a
2023-05-15 2023-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 10,400 940.00 264 560.00 n/a n/a n/a
2023-02-14 2022-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 1,000 41 n/a n/a n/a
2020-05-15 2020-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 19,600 17.37 1,243 163.91 n/a n/a n/a
2019-11-14 2019-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Call 16,700 471 n/a n/a n/a
2019-08-14 2019-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-03-31 13F/A ARROWHEAD PHARMACEUTICALS IN COM Call 9,800 180 n/a n/a n/a
2019-05-15 2019-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Call 9,800 180 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A ARROWHEAD PHARMACEUTICALS IN COM Put 4,100 -73.89 257 -75.34 n/a n/a n/a
2026-05-08 2026-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 4,100 257 n/a n/a n/a
2026-02-13 2025-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 15,700 503.85 1,042 1,070.79 n/a n/a n/a
2025-11-14 2025-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Put 2,600 -92.63 90 -84.02 n/a n/a n/a
2025-08-13 2025-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Put 35,300 24.73 558 54.72 n/a n/a n/a
2025-05-14 2025-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 28,300 2.91 361 -30.37 n/a n/a n/a
2025-02-13 2024-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 27,500 525.00 517 508.24 n/a n/a n/a
2024-11-14 2024-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Put 4,400 -52.69 85 -64.73 n/a n/a n/a
2024-08-14 2024-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Put 9,300 242 n/a n/a n/a
2024-05-15 2024-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 5,700 174 n/a n/a n/a
2023-11-21 2023-09-30 13F/A ARROWHEAD PHARMACEUTICALS IN COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-11-14 2023-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Put 0 0 n/a n/a n/a
2023-08-14 2023-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Put 4,600 -57.41 164 -40.15 n/a n/a n/a
2023-05-15 2023-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 10,800 52.11 274 -4.53 n/a n/a n/a
2023-02-14 2022-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 7,100 288 n/a n/a n/a
2020-05-15 2020-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 4,200 -51.72 266 8.57 n/a n/a n/a
2019-11-14 2019-09-30 13F ARROWHEAD PHARMACEUTICALS IN COM Put 8,700 245 n/a n/a n/a
2019-08-14 2019-06-30 13F ARROWHEAD PHARMACEUTICALS IN COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-03-31 13F/A ARROWHEAD PHARMACEUTICALS IN COM Put 1,500 28 n/a n/a n/a
2019-05-15 2019-03-31 13F ARROWHEAD PHARMACEUTICALS IN COM Put 1,500 28 n/a n/a n/a
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.