Arrowhead PharmaceuticalsARWR
13F holders, Q2 2025 (June 30)281holders +17
53new positions
37sold out
5famous investors
$15.81avg. 13F price*
At the end of Q2 2025, 281 institutions reported holding Arrowhead Pharmaceuticals Inc. (ARWR) in their 13F filings, up 17 from Q1 2025. 53 opened new positions and 37 sold out. The largest holders were BlackRock, Inc. ($306.9M), Vanguard Group Inc. ($245.3M) and Avoro Capital Advisors LLC ($167.5M). 5 famous investors held it, including Ken Fisher (0.0% of Fisher Asset Management's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Arrowhead Pharmaceuticals Inc.
- CUSIP
- 04280A100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 53 | $47.8M |
| Exits | 37 | $22.3M |
All 13F filers, Q1 2025 → Q2 2025: 12,704,743 shares bought and 11,634,921 shares sold, net +1,069,822 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 281 holders
| BlackRock, Inc. | 0.01% | Reduce -2.5% | 19,424,887 | $306.9M |
| Vanguard Group Inc. | 0.00% | Add +17.6% | 15,525,072 | $245.3M |
| Avoro Capital Advisors LLC | 2.93% | Reduce -4.6% | 10,600,000 | $167.5M |
| State Street Corp. | 0.00% | Reduce -9.0% | 6,371,056 | $100.7M |
| Slate Path Capital LP | 1.43% | No change | 5,232,000 | $82.7M |
| FMR LLC | 0.00% | Add +56.0% | 5,170,310 | $81.7M |
| Geode Capital Management, LLC | 0.00% | Add +1.0% | 2,978,505 | $47.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Reduce -43.9% | 2,684,317 | $42.4M |
| Siren, L.L.C. | 2.18% | No change | 2,669,880 | $42.2M |
| Marshall Wace, LLP | 0.04% | Add +3507.8% | 2,155,998 | $34.1M |
| Goldman Sachs Group Inc. | 0.01% | Add +21.4% | 2,115,314 | $33.4M |
| Norges Bank | 0.00% | Add +6.8% | 1,924,957 | $30.4M |
| Morgan Stanley | 0.00% | Reduce -7.8% | 1,705,266 | $26.9M |
| UBS Group AG | 0.01% | Reduce -1.6% | 1,600,596 | $25.3M |
| Northern Trust Corp. | 0.00% | Add +5.1% | 1,272,066 | $20.1M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +13.1% | 1,170,745 | $18.5M |
| Aberdeen Group plc | 0.03% | Reduce -10.5% | 960,245 | $15.2M |
| Baker Bros. Advisors LP | 0.14% | New | 939,174 | $14.8M |
| T. Rowe Price Investment Management, Inc. | 0.01% | Reduce -67.5% | 822,343 | $13.0M |
| Western Financial Corp | 6.95% | No change | 820,239 | $13.0M |
| Bank of New York Mellon Corp | 0.00% | Add +5.4% | 818,079 | $12.9M |
| Invesco Ltd. | 0.00% | Add +142.8% | 762,665 | $12.1M |
| Woodline Partners LP | 0.06% | Add +32.7% | 746,156 | $11.8M |
| Bank of America Corp. | 0.00% | Reduce -21.8% | 624,496 | $9.9M |
| Privium Fund Management B.V. | 2.13% | Reduce -2.7% | 612,214 | $9.9M |
| Principal Financial Group Inc. | 0.01% | Reduce -0.9% | 623,097 | $9.8M |
| Trexquant Investment LP | 0.09% | New | 503,654 | $8.0M |
| Schonfeld Strategic Advisors LLC | 0.06% | Add +816.1% | 482,055 | $7.6M |
| Fisher Asset Management | 0.00% | Reduce -6.5% | 451,655 | $7.1M |
| Public Sector Pension Investment Board | 0.03% | Add +7.1% | 428,386 | $6.8M |
| Barclays PLC | 0.00% | Add +78.0% | 409,603 | $6.5M |
| JPMorgan Chase & Co. | 0.00% | Reduce -16.4% | 407,644 | $6.4M |
| Legal & General Group Plc | 0.00% | Add +3.1% | 407,341 | $6.4M |
| Royal Bank of Canada | 0.00% | Add +784.7% | 400,210 | $6.3M |
| Two Sigma Advisers, LP | 0.01% | Reduce -45.9% | 391,800 | $6.2M |
| Clearbridge Investments, LLC | 0.00% | Reduce -17.2% | 380,886 | $6.0M |
| Dimensional Fund Advisors LP | 0.00% | New | 366,711 | $5.8M |
| Rhumbline Advisers | 0.00% | Add +4.0% | 359,997 | $5.7M |
| Nuveen, LLC | 0.00% | Reduce -8.2% | 310,354 | $4.9M |
| Susquehanna International Group, LLP | 0.01% | Add +6.3% | 307,745 | $4.9M |
| Pictet Asset Management Holding SA | 0.00% | Reduce -3.7% | 277,333 | $4.5M |
| Silvercrest Asset Management Group LLC | 0.03% | Add +0.1% | 280,177 | $4.4M |
| Ameriprise Financial Inc. | 0.00% | Reduce -6.7% | 267,027 | $4.2M |
| Hudson Bay Capital Management LP | 0.03% | Add +22.0% | 260,000 | $4.1M |
| Johnson & Johnson | 1.19% | No change | 247,598 | $4.0M |
| Deutsche Bank AG | 0.00% | Reduce -5.8% | 235,446 | $3.7M |
| Capital Fund Management S.A. | 0.04% | Add +38.8% | 226,365 | $3.6M |
| Nordea Investment Management AB | 0.00% | Add +63.0% | 213,345 | $3.5M |
| Pinnacle Associates Ltd. | 0.05% | Add +49.9% | 211,561 | $3.3M |
| Swiss National Bank | 0.00% | Reduce -3.3% | 209,800 | $3.3M |
| Sphera Funds Management LTD. | 0.84% | Reduce -26.9% | 202,996 | $3.2M |
| Raymond James Financial Inc. | 0.00% | Add +350.1% | 169,748 | $2.7M |
| Millennium Management | 0.00% | Reduce -75.5% | 169,041 | $2.7M |
| Wealth Effects LLC | 0.98% | Reduce -2.9% | 165,650 | $2.6M |
| Alliancebernstein L.P. | 0.00% | Add +2.8% | 159,070 | $2.5M |
| PDT Partners, LLC | 0.14% | New | 152,988 | $2.4M |
| AQR Capital Management | 0.00% | Add +276.1% | 152,351 | $2.4M |
| Prudential Financial Inc. | 0.00% | Add +5.1% | 130,290 | $2.4M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -36.5% | 151,275 | $2.4M |
| New York State Teachers Retirement System | 0.00% | Add +0.1% | 148,476 | $2.3M |
| Rafferty Asset Management, LLC | 0.01% | Reduce -26.4% | 141,925 | $2.2M |
| Citigroup Inc. | 0.00% | Reduce -57.0% | 140,786 | $2.2M |
| Neo Ivy Capital Management | 0.70% | New | 138,081 | $2.2M |
| Two Sigma Investments, LP | 0.00% | Reduce -84.0% | 133,403 | $2.1M |
| Kornitzer Capital Management Inc. | 0.04% | No change | 126,510 | $2.0M |
| HighTower Advisors, LLC | 0.00% | Add +10.3% | 123,941 | $2.0M |
| Man Group plc | 0.00% | Add +203.8% | 118,782 | $1.9M |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -1.6% | 116,305 | $1.8M |
| Platinum Investment Management Ltd. | 0.12% | Add +12.8% | 111,022 | $1.8M |
| California State Teachers Retirement System | 0.00% | Add +1.3% | 103,976 | $1.6M |
| Algert Global LLC | 0.03% | New | 102,490 | $1.6M |
| T. Rowe Price Associates Inc. | 0.00% | Add +8.0% | 100,608 | $1.6M |
| Ontario Teachers Pension Plan Board | 0.03% | Add +112.7% | 97,338 | $1.5M |
| Aquatic Capital Management LLC | 0.03% | Reduce -7.3% | 93,879 | $1.5M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -0.2% | 92,408 | $1.5M |
| Franklin Resources Inc. | 0.00% | New | 81,226 | $1.3M |
| Pinion Investment Advisors, LLC | 0.41% | Reduce -50.0% | 75,000 | $1.2M |
| State of Alaska, Department of Revenue | 0.01% | Add +7.1% | 74,819 | $1.2M |
| Alps Advisors Inc. | 0.01% | New | 74,497 | $1.2M |
| Engineers Gate Manager LP | 0.01% | Add +83.4% | 74,405 | $1.2M |
| MetLife Investment Management, LLC | 0.01% | No change | 71,963 | $1.1M |
| Wells Fargo & Company | 0.00% | Add +1.5% | 68,374 | $1.1M |
| M28 Capital Management LP | 1.82% | No change | 67,400 | $1.1M |
| State of Wisconsin Investment Board | 0.00% | Reduce -2.4% | 64,760 | $1.0M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 64,200 | $1.0M |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -2.6% | 63,999 | $1.0M |
| Citadel Advisors | 0.00% | Reduce -93.7% | 62,245 | $983K |
| Boothbay Fund Management, LLC | 0.03% | New | 61,947 | $979K |
| Intech Investment Management LLC | 0.01% | Reduce -26.3% | 60,534 | $956K |
| Bayforest Capital Ltd | 0.41% | New | 59,403 | $939K |
| Louisiana State Employees Retirement System | 0.02% | Reduce -1.2% | 58,700 | $927K |
| Commonwealth Equity Services, LLC | 0.00% | Add +74.8% | 58,310 | $921K |
| Los Angeles Capital Management LLC | 0.00% | New | 57,948 | $916K |
| Simplex Trading, LLC | 0.02% | Add +0.4% | 57,307 | $905K |
| ADAR1 Capital Management, LLC | 0.14% | Reduce -1.9% | 55,200 | $872K |
| State of Tennessee, Department of Treasury | 0.00% | Reduce -1.2% | 54,550 | $862K |
| Voya Investment Management LLC | 0.00% | Add +65.5% | 53,264 | $842K |
| King Luther Capital Management Corp. | 0.00% | Reduce -37.6% | 52,140 | $824K |
| Guggenheim Capital LLC | 0.01% | Reduce -4.6% | 50,818 | $803K |
| Janus Henderson Group PLC | 0.00% | No change | 49,845 | $788K |
"% of holder's portfolio" is ARWR's weight in each manager's 13F, not the share of Arrowhead Pharmaceuticals Inc. the manager owns.