Arrowhead PharmaceuticalsARWR
13F holders, Q4 2025 (December 31)401holders +98
111new positions
25sold out
7famous investors
$66.38avg. 13F price*
At the end of Q4 2025, 401 institutions reported holding Arrowhead Pharmaceuticals Inc. (ARWR) in their 13F filings, up 98 from Q3 2025. 111 opened new positions and 25 sold out. The largest holders were BlackRock, Inc. ($1.4B), Vanguard Group Inc. ($1.0B) and Avoro Capital Advisors LLC ($705.4M). 7 famous investors held it, including Ken Fisher (0.0% of Fisher Asset Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Ray Dalio (0.0% of Bridgewater Associates's portfolio).
- Company
- Arrowhead Pharmaceuticals Inc.
- CUSIP
- 04280A100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 111 | $373.7M |
| Exits | 25 | $28.0M |
All 13F filers, Q3 2025 → Q4 2025: 15,219,520 shares bought and 12,083,926 shares sold, net +3,135,594 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 401 holders
| BlackRock, Inc. | 0.02% | Add +5.4% | 21,318,582 | $1.4B |
| Vanguard Group Inc. | 0.01% | Reduce -4.6% | 15,293,121 | $1.0B |
| Avoro Capital Advisors LLC | 6.93% | Reduce -2.5% | 10,625,000 | $705.4M |
| FMR LLC | 0.02% | Add +13.2% | 6,520,408 | $432.9M |
| State Street Corp. | 0.01% | Add +0.1% | 6,403,830 | $425.2M |
| Geode Capital Management, LLC | 0.01% | Add +4.3% | 3,264,963 | $216.8M |
| Slate Path Capital LP | 2.26% | Reduce -49.4% | 2,523,500 | $167.5M |
| Baker Bros. Advisors LP | 0.85% | Add +30.2% | 2,175,645 | $144.4M |
| Arrowstreet Capital, Limited Partnership | 0.08% | Add +0.3% | 2,087,953 | $138.6M |
| Fred Alger Management, LLC | 0.48% | Add +497.4% | 1,832,997 | $121.7M |
| Deerfield Management Company, L.P. | 1.78% | Add +84.6% | 1,832,946 | $121.7M |
| Driehaus Capital Management LLC | 0.80% | Reduce -15.7% | 1,769,340 | $117.5M |
| Norges Bank | 0.01% | — | 1,704,464 | $113.2M |
| Goldman Sachs Group Inc. | 0.02% | Reduce -5.4% | 1,677,522 | $111.4M |
| Siren, L.L.C. | 2.97% | Reduce -43.8% | 1,500,476 | $99.6M |
| Morgan Stanley | 0.01% | Reduce -13.3% | 1,476,005 | $98.0M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +0.6% | 1,353,719 | $89.9M |
| Northern Trust Corp. | 0.01% | Add +2.6% | 1,346,257 | $89.4M |
| Fisher Asset Management | 0.03% | Add +24.5% | 1,311,727 | $87.1M |
| Janus Henderson Group PLC | 0.04% | Add +31.5% | 1,280,446 | $85.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.02% | Reduce -28.4% | 1,260,380 | $83.7M |
| Pictet Asset Management Holding SA | 0.07% | Add +253.5% | 1,028,736 | $68.6M |
| UBS Group AG | 0.01% | Add +7.5% | 987,287 | $65.5M |
| Vestal Point Capital, LP | 2.19% | New | 900,000 | $59.8M |
| Bank of New York Mellon Corp | 0.01% | Add +9.0% | 887,848 | $58.9M |
| T. Rowe Price Associates Inc. | 0.01% | Add +660.9% | 838,818 | $55.7M |
| Western Financial Corp | 21.60% | No change | 820,239 | $54.5M |
| Principal Financial Group Inc. | 0.02% | Reduce -8.3% | 715,539 | $47.5M |
| Assenagon Asset Management S.A. | 0.07% | Add +79.9% | 684,889 | $45.5M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.12% | Add +432.6% | 663,262 | $44.0M |
| Bank of America Corp. | 0.00% | Reduce -18.2% | 622,029 | $41.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -21.1% | 611,910 | $40.6M |
| RTW Investments, LP | 0.39% | New | 584,716 | $38.8M |
| Adage Capital Partners Gp, L.L.C. | 0.06% | New | 550,000 | $36.5M |
| Invesco Ltd. | 0.00% | Add +8.9% | 547,758 | $36.4M |
| Public Sector Pension Investment Board | 0.11% | Reduce -11.3% | 478,514 | $31.8M |
| Citadel Advisors | 0.02% | Add +49.3% | 474,259 | $31.5M |
| Summit Partners Public Asset Management, LLC | 0.88% | New | 470,000 | $31.2M |
| Voya Investment Management LLC | 0.03% | Add +207.4% | 422,731 | $28.1M |
| Woodline Partners LP | 0.10% | Reduce -60.0% | 400,184 | $26.6M |
| Privium Fund Management B.V. | 4.87% | Reduce -16.0% | 398,204 | $26.4M |
| Legal & General Group Plc | 0.01% | Add +2.3% | 395,311 | $26.2M |
| Balyasny Asset Management L.P. | 0.05% | Reduce -52.6% | 376,216 | $25.0M |
| Alyeska Investment Group, L.P. | 0.07% | New | 375,371 | $24.9M |
| Eventide Asset Management, LLC | 0.38% | New | 370,000 | $24.6M |
| Rhumbline Advisers | 0.02% | Reduce -5.0% | 352,395 | $23.4M |
| Nordea Investment Management AB | 0.02% | Reduce -12.9% | 324,251 | $21.6M |
| Barclays PLC | 0.01% | Reduce -8.1% | 321,833 | $21.4M |
| Nuveen, LLC | 0.01% | Add +3.7% | 288,578 | $19.2M |
| Voloridge Investment Management, LLC | 0.07% | Reduce -28.4% | 288,511 | $19.2M |
| Aberdeen Group plc | 0.03% | Reduce -45.0% | 286,146 | $19.0M |
| FengHe Fund Management Pte. Ltd. | 1.00% | New | 266,700 | $17.7M |
| Ameriprise Financial Inc. | 0.00% | Reduce -6.1% | 257,477 | $17.1M |
| Trexquant Investment LP | 0.15% | New | 250,944 | $16.7M |
| Swiss National Bank | 0.01% | Add +14.6% | 245,400 | $16.3M |
| Deutsche Bank AG | 0.01% | Reduce -1.6% | 242,074 | $16.1M |
| First Trust Advisors LP | 0.01% | Add +14.3% | 237,730 | $15.8M |
| Clearbridge Investments, LLC | 0.01% | Reduce -46.8% | 208,062 | $13.8M |
| Raymond James Financial Inc. | 0.00% | Reduce -12.7% | 198,387 | $13.2M |
| Hillsdale Investment Management Inc. | 0.36% | New | 193,850 | $12.9M |
| Pinnacle Associates Ltd. | 0.16% | Reduce -5.7% | 191,669 | $12.7M |
| Alliancebernstein L.P. | 0.00% | Add +10.8% | 172,666 | $11.5M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.02% | Reduce -0.9% | 159,538 | $10.6M |
| Skandinaviska Enskilda Banken AB (publ) | 0.04% | New | 159,532 | $10.6M |
| Silvercrest Asset Management Group LLC | 0.07% | Reduce -41.9% | 158,622 | $10.5M |
| Wells Fargo & Company | 0.00% | Add +90.1% | 152,507 | $10.1M |
| Prudential Financial Inc. | 0.01% | Add +11.4% | 152,225 | $10.1M |
| New York State Teachers Retirement System | 0.02% | Add +0.9% | 149,776 | $9.9M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -68.9% | 147,412 | $9.8M |
| AQR Capital Management | 0.01% | Add +3.2% | 147,353 | $9.8M |
| D. E. Shaw & Co. | 0.01% | Add +619.5% | 146,064 | $9.7M |
| Rhenman & Partners Asset Management AB | 0.90% | New | 144,500 | $9.6M |
| Wealth Effects LLC | 2.98% | Reduce -14.9% | 143,300 | $9.5M |
| WCM Investment Management, LLC | 0.02% | New | 138,905 | $9.3M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.01% | Reduce -3.0% | 133,875 | $8.9M |
| HighTower Advisors, LLC | 0.01% | Add +0.3% | 133,229 | $8.8M |
| Marshall Wace, LLP | 0.01% | Reduce -91.4% | 123,855 | $8.2M |
| Russell Investments Group, Ltd. | 0.01% | Add +847.8% | 122,115 | $8.1M |
| CANADA LIFE ASSURANCE Co | 0.01% | Reduce -8.6% | 118,750 | $7.9M |
| California State Teachers Retirement System | 0.01% | Add +13.8% | 118,372 | $7.9M |
| Sei Investments Co. | 0.01% | Add +724.6% | 112,279 | $7.5M |
| Weiss Asset Management LP | 0.13% | New | 111,375 | $7.4M |
| Franklin Resources Inc. | 0.00% | Reduce -7.8% | 107,366 | $7.1M |
| Neuberger Berman Group LLC | 0.01% | Add +650.0% | 100,385 | $6.7M |
| LPL Financial LLC | 0.00% | Add +99.9% | 100,277 | $6.7M |
| Integral Health Asset Management, LLC | 0.34% | Reduce -55.6% | 100,000 | $6.6M |
| Manufacturers Life Insurance Company, The | 0.01% | Add +55.8% | 98,151 | $6.5M |
| Tetragon Partners GP Ltd | 1.36% | Add +18.4% | 96,935 | $6.4M |
| Thrivent Financial for Lutherans | 0.01% | Reduce -4.8% | 95,001 | $6.3M |
| Victory Capital Management Inc. | 0.00% | Add +105.1% | 92,623 | $6.1M |
| Platinum Investment Management Ltd. | 1.37% | Reduce -19.4% | 89,484 | $5.9M |
| Rafferty Asset Management, LLC | 0.02% | Reduce -26.1% | 84,469 | $5.6M |
| Aquatic Capital Management LLC | 0.15% | Add +215.4% | 80,958 | $5.4M |
| State of Wisconsin Investment Board | 0.01% | Add +22.1% | 79,214 | $5.3M |
| Erste Asset Management GmbH | 0.04% | No change | 73,000 | $5.1M |
| Act Capital Management, LLC | 4.03% | — | 75,000 | $5.0M |
| Pinion Investment Advisors, LLC | 1.22% | No change | 75,000 | $5.0M |
| Creative Planning | 0.00% | Add +43.1% | 74,421 | $4.9M |
| MetLife Investment Management, LLC | 0.02% | Add +1.5% | 73,040 | $4.8M |
| State of Alaska, Department of Revenue | 0.05% | Add +1.2% | 70,399 | $4.7M |
"% of holder's portfolio" is ARWR's weight in each manager's 13F, not the share of Arrowhead Pharmaceuticals Inc. the manager owns.