Arrowhead Pharmaceuticals, Inc.
ARWR- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000879407
In the last 90 days, Arrowhead Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 2 sales; 501 institutions reported holding it in 13F filings for Q2 2026, worth $9.73B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Arrowhead Pharmaceuticals, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 437
- +45 vs. Q4 2025
- Shares held
- 120.8M
- +21.9M (+22.2%) vs. Q4 2025
- Total value
- $7.58B
- +$1.01B (+15.4%) vs. Q4 2025
- New holders
- 106
- 171 more added
- Sold out
- 61
- 112 more reduced
9 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ARWR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 501 | $9.73B |
| Q1 2026 | 437 | $7.58B |
| Q4 2025 | 401 | $7.70B |
| Q3 2025 | 303 | $3.83B |
| Q2 2025 | 281 | $1.67B |
| Q1 2025 | 264 | $1.34B |
| Q4 2024 | 269 | $1.88B |
| Q3 2024 | 272 | $1.90B |
| Q2 2024 | 272 | $2.54B |
| Q1 2024 | 273 | $2.76B |
| Q4 2023 | 266 | $2.37B |
| Q3 2023 | 257 | $2.01B |
| Q2 2023 | 274 | $2.57B |
| Q1 2023 | 257 | $1.85B |
| Q4 2022 | 282 | $2.97B |
| Q3 2022 | 278 | $2.35B |
| Q2 2022 | 279 | $2.54B |
| Q1 2022 | 307 | $3.19B |
| Q4 2021 | 311 | $4.51B |
| Q3 2021 | 297 | $4.16B |
| Q2 2021 | 314 | $5.54B |
| Q1 2021 | 289 | $4.55B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Arrowhead Pharmaceuticals, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Dimensional Fund Advisors LP | 608,531 | $38.1M | 0.01% | +461,119+312.8% | Added |
| JPMorgan Chase & Co | 683,068 | $39.4M | 0.00% | +71,158+11.6% | Added |
| BNP Paribas Arbitrage, SA | 650,599 | $40.8M | 0.03% | +610,201+1,510.5% | Added |
| American Century Companies Inc | 651,544 | $40.9M | 0.02% | +643,802+8,315.7% | Added |
| Voya Investment Management LLC | 656,129 | $41.1M | 0.04% | +233,398+55.2% | Added |
| Western Financial Corp | 820,239 | $51.4M | 20.13% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 836,981 | $52.5M | 0.12% | +173,719+26.2% | Added |
| Bank of New York Mellon Corp | 960,144 | $60.2M | 0.01% | +72,296+8.1% | Added |
| Morgan Stanley | 960,507 | $60.2M | 0.00% | −515,498−34.9% | Reduced |
| Vanguard Fiduciary Trust Co | 965,775 | $60.6M | 0.02% | +965,775 | New |
| Renaissance Technologies LLC | 1,036,495 | $65.0M | 0.10% | +1,036,495 | New |
| Price T Rowe Associates Inc | 1,043,732 | $65.4M | 0.01% | +204,914+24.4% | Added |
| Hood River Capital Management LLC | 1,056,534 | $66.2M | 0.66% | +1,056,534 | New |
| Bank of America Corp | 1,064,455 | $66.7M | 0.00% | +442,426+71.1% | Added |
| Fisher Asset Management, LLC | 1,113,568 | $69.8M | 0.02% | −198,159−15.1% | Reduced |
| D. E. Shaw & Co., Inc. | 1,183,838 | $74.2M | 0.06% | +1,037,774+710.5% | Added |
| Driehaus Capital Management LLC | 1,190,335 | $74.6M | 0.55% | −579,005−32.7% | Reduced |
| Charles Schwab Investment Management Inc | 1,192,085 | $74.7M | 0.01% | −161,634−11.9% | Reduced |
| Pictet Asset Management Holding SA | 1,273,266 | $79.6M | 0.08% | +244,530+23.8% | Added |
| UBS Asset Management Americas Inc | 1,330,996 | $83.5M | 0.02% | +70,616+5.6% | Added |
| UBS Group AG | 1,336,271 | $83.8M | 0.01% | +348,984+35.3% | Added |
| Janus Henderson Group PLC | 1,436,990 | $90.1M | 0.04% | +156,544+12.2% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,573,297 | $98.6M | 1.16% | −259,649−14.2% | Reduced |
| Siren, L.L.C. | 1,615,476 | $101.3M | 2.81% | +115,000+7.7% | Added |
| Northern Trust Corp | 1,655,837 | $103.8M | 0.01% | +309,580+23.0% | Added |
| Goldman Sachs Group Inc | 1,739,923 | $109.1M | 0.01% | +62,401+3.7% | Added |
| Baker Bros. Advisors LP | 1,992,783 | $124.9M | 0.72% | −182,862−8.4% | Reduced |
| Vestal Point Capital, LP | 2,275,000 | $142.6M | 3.99% | +1,375,000+152.8% | Added |
| Invesco Ltd. | 3,280,647 | $205.7M | 0.02% | +2,732,889+498.9% | Added |
| Fred Alger Management, LLC | 3,342,493 | $209.6M | 0.92% | +1,509,496+82.4% | Added |
| Geode Capital Management, LLC | 4,278,828 | $274.5M | 0.02% | +1,013,865+31.1% | Added |
| Vanguard Capital Management LLC | 6,032,416 | $378.2M | 0.01% | +6,032,416 | New |
| State Street Corp | 6,496,130 | $407.3M | 0.01% | +92,300+1.4% | Added |
| Vanguard Portfolio Management LLC | 7,146,136 | $448.1M | 0.02% | +7,146,136 | New |
| FMR LLC | 7,266,652 | $455.6M | 0.02% | +746,244+11.4% | Added |
| Avoro Capital Advisors LLC | 10,699,999 | $670.9M | 6.61% | +74,999+0.7% | Added |
| BlackRock, Inc. | 18,161,519 | $1.14B | 0.02% | −3,157,063−14.8% | Reduced |
| Slate Path Capital LP | 0 | $0 | 0.00% | −2,523,500−100.0% | Sold out |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −550,000−100.0% | Sold out |
| Public Sector Pension Investment Board | 0 | $0 | 0.00% | −478,514−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −288,511−100.0% | Sold out |
| FengHe Fund Management Pte. Ltd. | 0 | $0 | 0.00% | −266,700−100.0% | Sold out |
| Hillsdale Investment Management Inc. | 0 | $0 | 0.00% | −193,850−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −159,532−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −111,375−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −45,018−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −44,900−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −42,011−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −39,901−100.0% | Sold out |
| Moody Lynn & Lieberson, LLC | 0 | $0 | 0.00% | −22,000−100.0% | Sold out |
| Maryland State Retirement & Pension System | 0 | $0 | 0.00% | −20,241−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −16,026−100.0% | Sold out |
| Summit Global Investments | 0 | $0 | 0.00% | −14,287−100.0% | Sold out |
| Baader Bank INC | 0 | $0 | 0.00% | −14,194−100.0% | Sold out |
| VestGen Advisors, LLC | 0 | $0 | 0.00% | −12,312−100.0% | Sold out |
| Lynx1 Capital Management LP | 0 | $0 | 0.00% | −12,043−100.0% | Sold out |
| O'Neil Global Advisors, Inc. | 0 | $0 | 0.00% | −12,037−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −11,552−100.0% | Sold out |
| NEOS Investment Management LLC | 0 | $0 | 0.00% | −11,542−100.0% | Sold out |
| Sagewood Asset Management LP | 0 | $0 | 0.00% | −8,400−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −7,046−100.0% | Sold out |
| Koshinski Asset Management, Inc. | 0 | $0 | 0.00% | −6,749−100.0% | Sold out |
| PSP Research LLC | 0 | $0 | 0.00% | −6,689−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −6,200−100.0% | Sold out |
| Fermata Advisors, LLC | 0 | $0 | 0.00% | −6,000−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −5,701−100.0% | Sold out |
| Sage Rhino Capital LLC | 0 | $0 | 0.00% | −5,236−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −4,209−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −4,182−100.0% | Sold out |
| Ieq Capital, LLC | 0 | $0 | 0.00% | −4,144−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −4,080−100.0% | Sold out |
| Morton Capital Management LLC | 0 | $0 | 0.00% | −3,726−100.0% | Sold out |
| Caxton Associates LLP | 0 | $0 | 0.00% | −3,710−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −3,585−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −3,540−100.0% | Sold out |
| Scotia Capital Inc. | 0 | $0 | 0.00% | −3,482−100.0% | Sold out |
| Highland Capital Management, LLC | 0 | $0 | 0.00% | −3,453−100.0% | Sold out |
| Citizens Financial Group Inc | 0 | $0 | 0.00% | −3,279−100.0% | Sold out |
| Summit Trail Advisors, LLC | 0 | $0 | 0.00% | −3,164−100.0% | Sold out |
| PDS Planning, Inc | 0 | $0 | 0.00% | −3,091−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −2,175−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −1,377−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −1,312−100.0% | Sold out |
| Johnson Financial Group, Inc. | 0 | $0 | 0.00% | −1,215−100.0% | Sold out |
| Employees Retirement System of Texas | 0 | $0 | 0.00% | −1,202−100.0% | Sold out |
| Salomon & Ludwin, LLC | 0 | $0 | 0.00% | −1,046−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −903−100.0% | Sold out |
| Elyxium Wealth, LLC | 0 | $0 | 0.00% | −806−100.0% | Sold out |
| Kayne Anderson Rudnick Investment Management LLC | 0 | $0 | 0.00% | −438−100.0% | Sold out |
| Whittier Trust Co | 0 | $0 | 0.00% | −241−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −58−100.0% | Sold out |
| Hollencrest Capital Management | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| Activest Wealth Management | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Rakuten Securities, Inc. | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Torren Management, LLC | 0 | $0 | 0.00% | −28−100.0% | Sold out |
| Ankerstar Wealth, LLC | 0 | $0 | 0.00% | −22−100.0% | Sold out |
| Gilpin Wealth Management, LLC | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| Abound Wealth Management | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |