Who owns Arrowhead Pharmaceuticals, Inc.?
Institutional ownership of ARWR from SEC Form 13F filings across 347 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
347
13F holders
$6.75B
value, 2026 filers
60.4%
of shares outstanding (85.0M sh)
84
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of ARWR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 14.8M | $1.21B | 0.0% | 10.5% | -18.3% |
| 2 | FMR LLC | 8.0M | $655.3M | 0.0% | 5.7% | +10.6% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 6.4M | $517.7M | 0.0% | 4.5% | -11.1% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 6.1M | $498.1M | 0.0% | 4.3% | -49.3% |
| 5 | NORGES BANKNEW | 3.9M | $317.6M | 0.0% | 2.8% | new |
| 6 | Invesco Ltd. | 3.9M | $316.6M | 0.0% | 2.8% | +18.4% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 3.5M | $298.8M | 0.0% | 2.5% | -17.5% |
| 8 | FRED ALGER MANAGEMENT, LLC | 3.3M | $269.1M | 0.9% | 2.3% | -1.2% |
| 9 | FIRST TRUST ADVISORS LP | 1.4M | $110.3M | 0.1% | 1% | +807.1% |
| 10 | Jupiter Topco LLCNEW | 1.2M | $99.6M | 0.0% | 0.9% | new |
| 11 | NORTHERN TRUST CORP | 1.2M | $97.2M | 0.0% | 0.8% | -28.0% |
| 12 | GOLDMAN SACHS GROUP INC | 1.2M | $93.7M | 0.0% | 0.8% | -33.9% |
| 13 | BANK OF AMERICA CORP /DE/ | 1.1M | $92.9M | 0.0% | 0.8% | +7.1% |
| 14 | MORGAN STANLEY | 1.1M | $88.4M | 0.0% | 0.8% | +12.9% |
| 15 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 964,479 | $78.6M | 0.0% | 0.7% | -27.5% |
| 16 | Fisher Asset Management, LLC | 957,691 | $78.1M | 0.0% | 0.7% | -14.0% |
| 17 | Sixth Street Partners Management Company, L.P.NEW | 923,927 | $75.3M | 13.0% | 0.7% | new |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 923,927 | $75.3M | 0.0% | 0.7% | -22.5% |
| 19 | VANGUARD FIDUCIARY TRUST CO | 896,738 | $73.1M | 0.0% | 0.6% | -7.1% |
| 20 | UBS Group AG | 861,520 | $70.2M | 0.0% | 0.6% | -35.5% |
| 21 | Bank of New York Mellon Corp | 859,538 | $70.1M | 0.0% | 0.6% | -10.5% |
| 22 | PRICE T ROWE ASSOCIATES INC /MD/ | 853,360 | $69,558 | 0.0% | 0.6% | -18.2% |
| 23 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 830,247 | $67.7M | 1.2% | 0.6% | +53.7% |
| 24 | JPMORGAN CHASE & CO | 637,399 | $51.8M | 0.0% | 0.5% | -6.7% |
| 25 | Connor, Clark & Lunn Investment Management Ltd. | 625,569 | $51.0M | 0.1% | 0.4% | -25.3% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.