AMERICAN CENTURY COMPANIES INC

Position in ARWR — Arrowhead Pharmaceuticals, Inc.

CIK 748054 KANSAS CITY, MO

Position in ARWR

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$29,686,838

-$11,164,970 QoQ

Shares Held

364,211

-44.1% QoQ

Ownership

0.258%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#52

of 497 holders

Holding Since

Mar 2020

12 quarters on record

Voting authority Sole 88% Shared 12% None 0%

Healthcare · as of Jun 30, 2026

AMERICAN CENTURY COMPANIES INC holds $3,568,637,643 across 178 Biotechnology names. ARWR ranks #35 (0.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	1,853,956	$558,096,374
2	ASND	Ascendis Pharma A/S	1,400,575	$373,561,364
3	VRTX	Vertex Pharmaceuticals Inc / Ma	580,901	$288,550,953
4	ARGX	Argenx SE	173,193	$160,683,269
5	IONS	Ionis Pharmaceuticals Inc	1,947,076	$154,383,656
6	EXEL	Exelixis, Inc.	1,791,664	$97,484,438
7	HRMY	Harmony Biosciences Holdings, Inc.	2,539,512	$92,463,631
8	GPCR	Structure Therapeutics Inc.	1,682,179	$90,282,546

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$29,686,838	364,211	-44.1%	Shares	Defined	2026-08-12
2026-03-31	$40,851,808	651,544	+8315.7%	Shares	Defined	2026-05-15
2025-12-31	$513,991	7,742	+33.7%	Shares	Defined	2026-02-13
2022-03-31	$266,328	5,791	-55.4%	Shares	Defined	2022-05-11
2021-12-31	$860,971	12,986	+12.8%	Shares	Defined	2022-02-07
2021-09-30	$718,694	11,512	+12.5%	Shares	Defined	2021-11-10
2021-06-30	$847,497	10,233	+5.3%	Shares	Defined	2021-08-05
2021-03-31	$644,400	9,718	+34.7%	Shares	Defined	2021-05-14
2020-12-31	$553,530	7,214	+11.8%	Shares	Defined	2021-02-12
2020-09-30	$277,866	6,453	+12.5%	Shares	Defined	2020-11-13
2020-06-30	$247,694	5,735	-82.5%	Shares	Defined	2020-08-13
2020-03-31	$941,095	32,711	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.