ARWR

ARROWHEAD PHARMACEUTICALS, INC.

Pharmaceutical Preparations · SIC 2834CIK 879407Held by 8 tracked managersEDGAR filings ↗10-K/10-Q ↗

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8 managers · Q2 2026 13F

13F bookWeight

Platinum Investment Management

Platinum Investment ManagementPosition history →

1.3%

—

$5.3M

$0.41B13F book · 2026-06-30

Deerfield Management Company

Deerfield Management CompanyPosition history →

1.2%

(11.7%)

$113.2M

$9.59B13F book · 2026-06-30

Baker Bros. Advisors

Baker Bros. AdvisorsPosition history →

0.81%

—

$162.4M

$19.96B13F book · 2026-06-30

Holocene Advisors

Holocene AdvisorsPosition history →

0.21%

NEW

$90.2M

$43.69B13F book · 2026-06-30

Renaissance Technologies

Renaissance TechnologiesPosition history →

0.05%

(54.8%)

$38.2M

$72.62B13F book · 2026-06-30

WCM Investment Management

WCM Investment ManagementPosition history →

0.02%

(0.2%)

$13.8M

$55.16B13F book · 2026-06-30

Polen Capital Management

PolenPosition history →

<0.01%

NEW

$0.5M

$11.61B13F book · 2026-06-30

Alps Advisors

Alps AdvisorsPosition history →

<0.01%

+1.6%

$0.7M

$21.33B13F book · 2026-06-30

Weight = position value ÷ the manager's total 13F long-equity value in the same filing — one definition for every row. “1st obs.” marks a position with no earlier stored 13F to compare against — it is not shown as a purchase.