Security record · archived quarter
ARWR
Arrowhead Pharmaceuticals, Inc. · Healthcare · Biotechnology
129Tracked holders
+9Δ holders
82.68MShares held
$4.92BReported value
+14New positions
−6Exits
Momentum inputs (comparable managers):
holder breadth +7.5% ·
share flow +14.2% ·
net new positions +6.2%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 131 | +6 | 82.23M | $6.28B | +14 | −9 |
| Q1 2026 | 129 | +9 | 82.68M | $4.92B | +14 | −6 |
| Q4 2025 | 119 | +2 | 83.16M | $5.52B | +3 | — |
| Q3 2025 | 18 | 0 | 61.93M | $2.14B | +1 | −2 |
| Q2 2025 | 16 | +2 | 54.75M | $865.08M | +2 | — |
| Q1 2025 | 11 | +1 | 14.99M | $191.04M | +1 | — |
| Q4 2024 | 10 | -1 | 13.46M | $253.12M | +1 | −2 |
| Q3 2024 | 10 | +1 | 7.88M | $152.69M | +1 | — |
| Q2 2024 | 9 | — | 6.44M | $167.29M | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 18.16M | -14.8% | $1.14B | 0.0% | ▼ Trim | 4 | SEC ↗ ×18 |
| 2 | Fidelity (FMR) ✦ | 7.27M | +11.4% | $455.62M | 0.0% | ▲ Add | 4 | SEC ↗ ×6 |
| 3 | State Street Global Advisors ✦ (passive) | 6.50M | +1.4% | $407.31M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 4 | Vanguard Capital Management Llc | 6.03M | — | $378.23M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 4.28M | +31.1% | $274.50M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 6 | Invesco Ltd. | 3.28M | +498.9% | $205.70M | 0.0% | ▲ Add | 2 | SEC ↗ ×8 |
| 7 | Goldman Sachs Group ✦ | 1.74M | +3.7% | $109.09M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 8 | Northern Trust Corp | 1.66M | +23.0% | $103.82M | 0.0% | ▲ Add | 2 | SEC ↗ ×6 |
| 9 | Janus Henderson Group Plc | 1.44M | +12.2% | $90.12M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 10 | UBS Group AG | 1.34M | +35.4% | $83.78M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 11 | UBS AM, a distinct business unit of… | 1.33M | +5.6% | $83.45M | 0.0% | ▲ Add | 2 | SEC ↗ ×9 |
| 12 | Pictet Asset Management Holding SA | 1.27M | +23.8% | $79.61M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 13 | Charles Schwab Investment… | 1.19M | -11.9% | $74.74M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | D. E. Shaw & Co. ✦ | 1.18M | +710.5% | $74.23M | 0.1% | ▲ Add | 3 | SEC ↗ ×2 |
| 15 | Fisher Asset Management ✦ | 1.11M | -15.1% | $69.82M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 16 | Bank Of America Corp /De/ | 1.06M | +71.1% | $66.74M | 0.0% | ▲ Add | 2 | SEC ↗ ×6 |
| 17 | T. Rowe Price ✦ | 1.04M | +24.4% | $65.44M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 18 | Renaissance Technologies ✦ | 1.04M | New | $64.99M | 0.1% | New | 1 | SEC ↗ |
| 19 | Bank of New York Mellon Corp | 2.18M | +145.0% | $61.46M | 0.0% | ▲ Add | 2 | SEC ↗ ×16 |
| 20 | Morgan Stanley ✦ | 960.51K | -34.9% | $60.22M | 0.0% | ▼ Trim | 3 | SEC ↗ ×16 |
| 21 | Connor, Clark & Lunn Investment… | 836.98K | +26.2% | $52.48M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 22 | Voya Investment Management Llc | 656.13K | +55.2% | $41.14M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 23 | American Century Companies Inc | 651.54K | +8315.7% | $40.85M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | Bnp Paribas Financial Markets | 650.60K | +1510.5% | $40.79M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 25 | JPMorgan Chase ✦ | 683.07K | +11.6% | $39.38M | 0.0% | ▲ Add | 3 | SEC ↗ ×8 |
| 26 | Dimensional Fund Advisors Lp | 608.53K | +312.8% | $38.15M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 27 | Arrowstreet Capital ✦ | 587.12K | -71.9% | $36.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 28 | Nuveen, LLC | 499.84K | +73.2% | $31.34M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 29 | Principal Financial Group Inc | 490.12K | -31.5% | $30.73M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 30 | Alyeska Investment Group, L.P. | 472.87K | +26.0% | $29.65M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 31 | Franklin Resources Inc | 462.71K | +331.0% | $29.01M | 0.0% | ▲ Add | 2 | SEC ↗ ×10 |
| 32 | Rhumbline Advisers | 404.44K | +14.8% | $25.36M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 33 | Susquehanna International Group, Llp | 378.83K | +1210.3% | $23.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | Aberdeen Group plc | 363.97K | +27.2% | $22.82M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | Canada Pension Plan Investment Board | 325.70K | +1038.8% | $20.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Alliancebernstein L.P. | 280.39K | +62.4% | $18.62M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Nordea Investment Management Ab | 306.44K | -5.5% | $18.58M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 38 | Deutsche Bank Ag\ | 259.96K | +7.4% | $16.30M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 39 | California Public Employees… | 257.13K | New | $16.12M | 0.0% | New | 1 | SEC ↗ |
| 40 | Citigroup Inc | 251.57K | +488.6% | $15.77M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 41 | Swiss National Bank | 242.00K | -1.4% | $15.17M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 42 | Legal & General Group Plc | 229.10K | -42.0% | $14.36M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 43 | Balyasny Asset Management L.P. | 206.41K | -45.1% | $12.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 44 | Neuberger Berman Group LLC | 203.91K | +103.1% | $12.79M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 45 | Sei Investments Co | 235.22K | +109.5% | $12.78M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 46 | Clearbridge Investments, LLC | 202.35K | -2.8% | $12.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 47 | Ameriprise Financial Inc | 191.05K | -25.8% | $11.98M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 48 | Raymond James Financial Inc | 182.56K | -8.0% | $11.45M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 49 | Marshall Wace ✦ | 179.57K | +45.0% | $11.26M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 50 | Russell Investments Group, Ltd. | 174.00K | +42.5% | $10.91M | 0.0% | ▲ Add | 2 | SEC ↗ ×8 |
| 51 | Loomis Sayles & Co L P | 172.17K | New | $10.80M | 0.0% | New | 1 | SEC ↗ ×2 |
| 52 | AQR Capital Management ✦ | 167.21K | +13.5% | $10.33M | 0.0% | ▲ Add | 5 | SEC ↗ ×4 |
| 53 | Manufacturers Life Insurance… | 160.42K | +63.4% | $10.06M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 54 | Wells Fargo & Company/Mn | 158.40K | +3.9% | $9.93M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 55 | Wcm Investment Management, Llc | 171.57K | +23.5% | $9.89M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 56 | Hsbc Holdings Plc | 151.05K | New | $9.45M | 0.0% | New | 1 | SEC ↗ |
| 57 | Toronto Dominion Bank | 150.28K | New | $9.42M | 0.0% | New | 1 | SEC ↗ ×3 |
| 58 | First Trust Advisors Lp | 149.15K | -37.3% | $9.35M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 59 | Schroder Investment Management Group | 162.00K | — | $9.34M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 60 | HighTower Advisors, LLC | 146.46K | +9.9% | $9.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 61 | California State Teachers… | 144.31K | +21.9% | $9.05M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 62 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 139.60K | +4.3% | $8.73M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 63 | Bank Of Nova Scotia | 135.96K | New | $8.52M | 0.0% | New | 1 | SEC ↗ |
| 64 | LPL Financial LLC | 129.50K | +29.1% | $8.12M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 65 | State Of Wisconsin Investment Board | 3.08M | +3785.5% | $7.98M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 66 | Universal- Beteiligungs- und… | 120.24K | -24.6% | $7.54M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 67 | Barclays Plc | 115.34K | -64.2% | $7.23M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 68 | Citadel Advisors ✦ | 98.19K | -79.3% | $6.16M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 69 | Bridgewater Associates ✦ | 95.55K | +59.3% | $5.99M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Victory Capital Management Inc | 89.29K | -3.6% | $5.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 71 | Creative Planning | 88.26K | +18.6% | $5.53M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Prudential Financial Inc | 70.14K | -53.9% | $4.40M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 73 | Envestnet Asset Management Inc | 66.75K | +148.4% | $4.19M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 74 | Royal Bank Of Canada | 61.32K | +19.8% | $3.84M | 0.0% | ▲ Add | 2 | SEC ↗ ×6 |
| 75 | Ensign Peak Advisors, Inc | 59.12K | +153.3% | $3.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 76 | Assenagon Asset Management S.A. | 58.73K | -91.4% | $3.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 77 | Allianz Asset Management GmbH | 55.62K | +194.3% | $3.49M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 78 | Allspring Global Investments… | 55.18K | +658.3% | $3.47M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 79 | Commonwealth Equity Services, Llc | 55.08K | -1.1% | $3.45M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 80 | Wellington Management ✦ | 54.52K | +14.8% | $3.42M | 0.0% | ▲ Add | 8 | SEC ↗ ×4 |
| 81 | Zurcher Kantonalbank (Zurich… | 48.37K | +22.9% | $3.03M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 82 | Tidal Investments LLC | 47.83K | New | $3.00M | 0.0% | New | 1 | SEC ↗ ×2 |
| 83 | Td Asset Management Inc | 44.72K | -19.9% | $2.80M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 84 | Nomura Asset Management… | 42.75K | +6.5% | $2.68M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 85 | New York State Common Retirement… | 41.88K | 0.0% | $2.63M | 0.0% | Held | 2 | SEC ↗ |
| 86 | Gotham Asset Management ✦ | 38.17K | -32.2% | $2.39M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 87 | Two Sigma Investments ✦ | 35.80K | New | $2.24M | 0.0% | New | 1 | SEC ↗ |
| 88 | Us Bancorp \De\ | 34.68K | +0.4% | $2.17M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 89 | Fifth Third Bancorp | 33.45K | +2648.3% | $2.10M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 90 | ProShare Advisors LLC | 31.50K | -1.1% | $1.97M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 91 | State Board Of Administration Of… | 29.65K | 0.0% | $1.86M | 0.0% | Held | 2 | SEC ↗ |
| 92 | Mackenzie Financial Corp | 27.82K | +143.0% | $1.74M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 93 | Pacer Advisors, Inc. | 23.92K | New | $1.50M | 0.0% | New | 1 | SEC ↗ |
| 94 | Bank Of Montreal /Can/ | 22.13K | +51.2% | $1.39M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 95 | Wealth Enhancement Advisory… | 21.49K | +13.3% | $1.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | Amundi | 17.30K | -34.4% | $1.08M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 97 | Corient Private Wealth LP | 16.11K | -55.8% | $1.01M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 98 | Jane Street Group, Llc | 15.78K | +178.2% | $989,093 | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 99 | Simplex Trading, Llc | 14.28K | New | $895,418 | 0.0% | New | 1 | SEC ↗ |
| 100 | Federated Hermes, Inc. | 14.11K | +1987.6% | $884,823 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Renaissance Technologies | $64.99M | 0.1% |
| California Public Employees… | $16.12M | 0.0% |
| Loomis Sayles & Co L P | $10.80M | 0.0% |
| Hsbc Holdings Plc | $9.45M | 0.0% |
| Toronto Dominion Bank | $9.42M | 0.0% |
| Bank Of Nova Scotia | $8.52M | 0.0% |
| Tidal Investments LLC | $3.00M | 0.0% |
| Two Sigma Investments | $2.24M | 0.0% |
| Pacer Advisors, Inc. | $1.50M | 0.0% |
| Simplex Trading, Llc | $895,418 | 0.0% |
Exited
| Norges Bank | $113.16M | was 0.0% |
| Adage Capital Partners | $36.51M | was 0.1% |
| Millennium Management | $2.99M | was 0.0% |
| Man Group plc | $766,937 | was 0.0% |
| Daiwa Securities Group Inc. | $91,000 | was 0.0% |
| Kayne Anderson Rudnick… | $29,079 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 430 holders, 120.06M shares, $7.40B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 18
OLUKOTUN ADEOYE Y
Director · 2.00K sh · $173,920
Aug 18
PERRY MICHAEL S
Director · 11.60K sh · $1.01M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 14
SC 13G/A — Avoro Capital Advisors LLC
Jul 31
SC 13G/A — VANGUARD PORTFOLIO MANAGEMENT LLC
Jul 27
SC 13G/A — BlackRock, Inc.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
Get this via the API