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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 18,161,519 | $1.14B | 0.02% | −3,157,063−14.8% | Reduced |
| Avoro Capital Advisors LLC | 10,699,999 | $670.9M | 6.61% | +74,999+0.7% | Added |
| FMR LLC | 7,266,652 | $455.6M | 0.02% | +746,244+11.4% | Added |
| Vanguard Portfolio Management LLC | 7,146,136 | $448.1M | 0.02% | +7,146,136 | New |
| State Street Corp | 6,496,130 | $407.3M | 0.01% | +92,300+1.4% | Added |
| Vanguard Capital Management LLC | 6,032,416 | $378.2M | 0.01% | +6,032,416 | New |
| Geode Capital Management, LLC | 4,278,828 | $274.5M | 0.02% | +1,013,865+31.1% | Added |
| Fred Alger Management, LLC | 3,342,493 | $209.6M | 0.92% | +1,509,496+82.4% | Added |
| Invesco Ltd. | 3,280,647 | $205.7M | 0.02% | +2,732,889+498.9% | Added |
| Vestal Point Capital, LP | 2,275,000 | $142.6M | 3.99% | +1,375,000+152.8% | Added |
| Baker Bros. Advisors LP | 1,992,783 | $124.9M | 0.72% | −182,862−8.4% | Reduced |
| Goldman Sachs Group Inc | 1,739,923 | $109.1M | 0.01% | +62,401+3.7% | Added |
| Northern Trust Corp | 1,655,837 | $103.8M | 0.01% | +309,580+23.0% | Added |
| Siren, L.L.C. | 1,615,476 | $101.3M | 2.81% | +115,000+7.7% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,573,297 | $98.6M | 1.16% | −259,649−14.2% | Reduced |
| Janus Henderson Group PLC | 1,436,990 | $90.1M | 0.04% | +156,544+12.2% | Added |
| UBS Group AG | 1,336,271 | $83.8M | 0.01% | +348,984+35.3% | Added |
| UBS Asset Management Americas Inc | 1,330,996 | $83.5M | 0.02% | +70,616+5.6% | Added |
| Pictet Asset Management Holding SA | 1,273,266 | $79.6M | 0.08% | +244,530+23.8% | Added |
| Charles Schwab Investment Management Inc | 1,192,085 | $74.7M | 0.01% | −161,634−11.9% | Reduced |
| Driehaus Capital Management LLC | 1,190,335 | $74.6M | 0.55% | −579,005−32.7% | Reduced |
| D. E. Shaw & Co., Inc. | 1,183,838 | $74.2M | 0.06% | +1,037,774+710.5% | Added |
| Fisher Asset Management, LLC | 1,113,568 | $69.8M | 0.02% | −198,159−15.1% | Reduced |
| Bank of America Corp | 1,064,455 | $66.7M | 0.00% | +442,426+71.1% | Added |
| Hood River Capital Management LLC | 1,056,534 | $66.2M | 0.66% | +1,056,534 | New |
| Price T Rowe Associates Inc | 1,043,732 | $65.4M | 0.01% | +204,914+24.4% | Added |
| Renaissance Technologies LLC | 1,036,495 | $65.0M | 0.10% | +1,036,495 | New |
| Vanguard Fiduciary Trust Co | 965,775 | $60.6M | 0.02% | +965,775 | New |
| Morgan Stanley | 960,507 | $60.2M | 0.00% | −515,498−34.9% | Reduced |
| Bank of New York Mellon Corp | 960,144 | $60.2M | 0.01% | +72,296+8.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 836,981 | $52.5M | 0.12% | +173,719+26.2% | Added |
| Western Financial Corp | 820,239 | $51.4M | 20.13% | 00.0% | Unchanged |
| Voya Investment Management LLC | 656,129 | $41.1M | 0.04% | +233,398+55.2% | Added |
| American Century Companies Inc | 651,544 | $40.9M | 0.02% | +643,802+8,315.7% | Added |
| BNP Paribas Arbitrage, SA | 650,599 | $40.8M | 0.03% | +610,201+1,510.5% | Added |
| JPMorgan Chase & Co | 683,068 | $39.4M | 0.00% | +71,158+11.6% | Added |
| Dimensional Fund Advisors LP | 608,531 | $38.1M | 0.01% | +461,119+312.8% | Added |
| Arrowstreet Capital, Limited Partnership | 587,125 | $36.8M | 0.02% | −1,500,828−71.9% | Reduced |
| RTW Investments, LP | 585,682 | $36.7M | 0.37% | +966+0.2% | Added |
| Summit Partners Public Asset Management, LLC | 540,144 | $33.9M | 1.57% | +70,144+14.9% | Added |
| Nuveen, LLC | 499,837 | $31.3M | 0.01% | +211,259+73.2% | Added |
| Principal Financial Group Inc | 490,122 | $30.7M | 0.02% | −225,417−31.5% | Reduced |
| Alyeska Investment Group, L.P. | 472,870 | $29.6M | 0.08% | +97,499+26.0% | Added |
| Franklin Resources Inc | 462,707 | $29.0M | 0.01% | +355,341+331.0% | Added |
| Panagora Asset Management Inc | 461,193 | $28.9M | 0.11% | +425,238+1,182.7% | Added |
| Rhumbline Advisers | 404,436 | $25.4M | 0.02% | +52,041+14.8% | Added |
| Susquehanna International Group, LLP | 378,833 | $23.8M | 0.03% | +349,922+1,210.3% | Added |
| Eventide Asset Management, LLC | 370,000 | $23.2M | 0.38% | 00.0% | Unchanged |
| Privium Fund Management B.V. | 366,936 | $23.0M | 4.79% | −31,268−7.9% | Reduced |
| Standard Life Aberdeen plc | 363,972 | $22.8M | 0.04% | +77,826+27.2% | Added |
| Canada Pension Plan Investment Board | 325,700 | $20.4M | 0.01% | +297,100+1,038.8% | Added |
| Lord, Abbett & Co. LLC | 312,824 | $19.6M | 0.06% | +312,824 | New |
| Integral Health Asset Management, LLC | 300,000 | $18.8M | 1.00% | +200,000+200.0% | Added |
| Alliancebernstein L.P. | 280,394 | $18.6M | 0.01% | +107,728+62.4% | Added |
| Nordea Investment Management AB | 306,439 | $18.6M | 0.02% | −17,812−5.5% | Reduced |
| Trexquant Investment LP | 277,114 | $17.4M | 0.13% | +26,170+10.4% | Added |
| Deutsche Bank AG | 259,963 | $16.3M | 0.01% | +17,889+7.4% | Added |
| California Public Employees Retirement System | 257,133 | $16.1M | 0.01% | +257,133 | New |
| Citigroup Inc | 251,568 | $15.8M | 0.01% | +208,825+488.6% | Added |
| Swiss National Bank | 242,000 | $15.2M | 0.01% | −3,400−1.4% | Reduced |
| Legal & General Group Plc | 229,097 | $14.4M | 0.00% | −166,214−42.0% | Reduced |
| Balyasny Asset Management LLC | 206,412 | $12.9M | 0.03% | −169,804−45.1% | Reduced |
| Neuberger Berman Group LLC | 203,914 | $12.8M | 0.01% | +103,529+103.1% | Added |
| SEI Investments Co | 203,220 | $12.7M | 0.01% | +90,941+81.0% | Added |
| Clearbridge Investments, LLC | 202,347 | $12.7M | 0.01% | −5,715−2.7% | Reduced |
| Woodline Partners LP | 200,184 | $12.6M | 0.05% | −200,000−50.0% | Reduced |
| Affinity Asset Advisors, LLC | 200,000 | $12.5M | 0.74% | +130,000+185.7% | Added |
| Longaeva Partners L.P. | 194,589 | $12.2M | 0.59% | +194,589 | New |
| Ameriprise Financial Inc | 191,054 | $12.0M | 0.00% | −66,423−25.8% | Reduced |
| Mutual of America Capital Management LLC | 184,304 | $11.6M | 0.13% | +168,502+1,066.3% | Added |
| Raymond James Financial Inc | 182,555 | $11.4M | 0.00% | −15,832−8.0% | Reduced |
| Marshall Wace, LLP | 179,573 | $11.3M | 0.01% | +55,718+45.0% | Added |
| Pinnacle Associates Ltd | 175,456 | $11.0M | 0.14% | −16,213−8.5% | Reduced |
| Russell Investments Group, Ltd. | 173,995 | $10.9M | 0.01% | +51,880+42.5% | Added |
| Retirement Systems of Alabama | 171,672 | $10.8M | 0.04% | +171,672 | New |
| AQR Capital Management LLC | 167,210 | $10.3M | 0.00% | +19,857+13.5% | Added |
| Manufacturers Life Insurance Company, The | 160,422 | $10.1M | 0.01% | +62,271+63.4% | Added |
| Wells Fargo & Company | 158,398 | $9.93M | 0.00% | +5,891+3.9% | Added |
| SEB Asset Management AB | 158,205 | $9.92M | 0.04% | +158,205 | New |
| WCM Investment Management, LLC | 171,575 | $9.89M | 0.02% | +32,670+23.5% | Added |
| HSBC Holdings PLC | 151,046 | $9.45M | 0.01% | +151,046 | New |
| Toronto Dominion Bank | 150,278 | $9.42M | 0.02% | +150,278 | New |
| First Trust Advisors LP | 149,148 | $9.35M | 0.01% | −88,582−37.3% | Reduced |
| Schroder Investment Management Group | 162,005 | $9.34M | 0.01% | +162,005 | New |
| HighTower Advisors, LLC | 146,462 | $9.18M | 0.01% | +13,233+9.9% | Added |
| Rhenman & Partners Asset Management AB | 144,500 | $9.06M | 1.12% | 00.0% | Unchanged |
| California State Teachers Retirement System | 144,313 | $9.05M | 0.01% | +25,941+21.9% | Added |
| Wealth Effects LLC | 143,300 | $8.98M | 3.18% | 00.0% | Unchanged |
| MetLife Investment Management | 140,404 | $8.80M | 0.04% | +67,364+92.2% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 139,598 | $8.73M | 0.01% | +5,723+4.3% | Added |
| Empowered Funds, LLC | 137,220 | $8.60M | 0.05% | +119,202+661.6% | Added |
| Bank of Nova Scotia | 135,960 | $8.52M | 0.01% | +135,960 | New |
| LPL Financial LLC | 129,499 | $8.12M | 0.00% | +29,222+29.1% | Added |
| Polygon Management Ltd. | 127,198 | $7.98M | 1.57% | +30,263+31.2% | Added |
| New York State Teachers Retirement System | 124,853 | $7.83M | 0.02% | −24,923−16.6% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 120,238 | $7.54M | 0.01% | −39,300−24.6% | Reduced |
| Barclays PLC | 115,343 | $7.23M | 0.00% | −206,490−64.2% | Reduced |
| Vanguard Asset Management, Ltd | 112,971 | $7.08M | 0.01% | +112,971 | New |
| Silvercrest Asset Management Group LLC | 108,413 | $6.80M | 0.05% | −50,209−31.7% | Reduced |
| Cormorant Asset Management, LP | 100,000 | $6.27M | 0.32% | +100,000 | New |