ARWRArrowhead Pharmaceuticals, Inc.

$62.78+105% 1Y

Who owns ARWR

493 institutions reported holding ARWR for 2026Q2, together 84% of the company, more than the 426 a quarter earlier.

493

Institutions reporting a position · as of 2026Q2 · up from 426 the quarter before

Shares held by institutions
119.3M

Shares held by institutions · 84% of the company · long US equity positions only, as reported on Form 13F

Reported value
$9.73B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
38%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
53
New positions
127
Positions exited
61
Added to
136
Reduced
145
Top 10 holdersof the company
49%
Shares sold shortsettled Sep 15, 2026
9.3M
Short interestof shares outstanding
6.5%
Days to coverat the average daily volume
5.2
Change in the short positionsince the Aug 31, 2026 count
−1.6%
Institutional ownership by quarter, 2013Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q2493119.3M$9.73B
2026Q1426120.7M$7.57B
2025Q4393115.8M$7.69B
2025Q3300110.8M$3.82B
2025Q2280105.8M$1.67B
2025Q1262105.3M$1.34B
2024Q426899.7M$1.88B
2024Q327097.9M$1.90B
2024Q227197.7M$2.54B
2024Q127296.7M$2.77B
2023Q426477.5M$2.37B
2023Q325374.6M$2.01B
2023Q227172.3M$2.57B
2023Q125372.9M$1.85B
2022Q428073.2M$2.97B
2022Q327571.0M$2.35B
Largest reported holders, 2026Q2
HolderShares% of companyValue
BlackRock Inc.14.8M10%$1.21B
VANGUARD GROUP INC13.6M9.5%$1.11B
Avoro Capital Advisors LLC11.4M8.0%$926M
FMR LLC8.0M5.6%$655M
STATE STREET CORP5.7M4.0%$464M
NORGES BANK3.9M2.7%$318M
Invesco Ltd.3.9M2.7%$317M
GEODE CAPITAL MANAGEMENT LLC3.5M2.5%$299M
FRED ALGER MANAGEMENT, LLC3.3M2.3%$269M
BAKER BROS. ADVISORS LP2.0M1.4%$162M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20269.3M6.5%5.2
Aug 31, 20269.4M6.6%8.8
Aug 14, 20269.2M6.5%7.8
Jul 31, 20269.7M6.8%3.9
Jul 15, 20269.6M6.8%4.9
Jun 30, 20268.4M5.9%2.2
Jun 15, 202611.7M8.2%8.2
May 29, 202612.4M8.7%8.3
May 15, 202612.9M9.1%7.0
Apr 30, 202612.9M9.1%6.7
Apr 15, 202612.0M8.4%7.7
Mar 31, 202613.0M9.1%5.3

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

opening the register…