AMERICAN CENTURY COMPANIES INC

Position in KROS — Keros Therapeutics, Inc.

CIK 748054 KANSAS CITY, MO

Position in KROS

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

Position Value

$906,076

+$196,646 QoQ

Shares Held

84,680

+31.8% QoQ

Ownership

0.427%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#39

of 132 holders

Holding Since

Mar 2023

12 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

AMERICAN CENTURY COMPANIES INC holds $3,568,637,643 across 178 Biotechnology names. KROS ranks #92 (0.0% 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	$906,076	84,680	+31.8%	Shares	Defined	2026-08-12
2026-03-31	$709,430	64,260	+75.4%	Shares	Defined	2026-05-15
2025-12-31	$745,990	36,640	-6.4%	Shares	Defined	2026-02-13
2025-09-30	$619,606	39,166	-88.1%	Shares	Defined	2025-11-12
2024-12-31	$5,206,803	328,920	+10.5%	Shares	Defined	2025-02-11
2024-09-30	$17,285,638	297,669	-0.2%	Shares	Defined	2024-11-12
2024-06-30	$13,626,369	298,170	+24.9%	Shares	Defined	2024-08-07
2024-03-31	$15,808,957	238,806	+11.3%	Shares	Defined	2024-05-14
2023-12-31	$8,532,376	214,597	+0.2%	Shares	Defined	2024-02-13
2023-09-30	$6,824,679	214,074	+0.0%	Shares	Defined	2023-11-13
2023-06-30	$8,598,640	214,003	+89.1%	Shares	Defined	2023-08-14
2023-03-31	$4,831,206	113,143	—	Shares	Defined	2023-05-11
No filing history on record for this holder in this stock.