AMERICAN CENTURY COMPANIES INC

Position in INSM — INSMED Inc

CIK 748054 KANSAS CITY, MO

Position in INSM

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$151,386,652

+$119,173,589 QoQ

Shares Held

925,799

+400.2% QoQ

Ownership

0.427%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

24 quarters on record

Voting authority Sole 93.54147066479874.ToString("F0")% Shared 6.45852933520127.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

AMERICAN CENTURY COMPANIES INC holds $3,844,311,104 across 169 Biotechnology names. INSM ranks #5 (3.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	1,802,363	$596,347,845
2	REGN	Regeneron Pharmaceuticals, Inc.	562,097	$434,298,626
3	VRTX	Vertex Pharmaceuticals Inc / Ma	813,285	$363,164,283
4	ASND	Ascendis Pharma A/S	1,397,119	$319,563,028
5	INSM	INSMED Inc This page	925,799	$151,386,652
6	ARGX	Argenx SE	173,700	$126,844,425
7	IONS	Ionis Pharmaceuticals Inc	1,663,803	$124,934,967
8	CPRX	Catalyst Pharmaceuticals, Inc.	4,138,416	$102,467,180

24 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$151,386,652	925,799	+400.2%	Shares	Defined	2026-05-15
2025-12-31	$32,213,063	185,090	+141.4%	Shares	Defined	2026-02-13
2025-09-30	$11,042,542	76,679	-59.7%	Shares	Defined	2025-11-12
2025-06-30	$19,128,040	190,064	-78.2%	Shares	Defined	2025-08-12
2025-03-31	$66,534,263	872,123	+7.3%	Shares	Defined	2025-05-13
2024-12-31	$56,114,331	812,780	+12.3%	Shares	Defined	2025-02-11
2024-09-30	$52,828,859	723,683	-4.2%	Shares	Defined	2024-11-12
2024-06-30	$50,603,157	755,271	+7.5%	Shares	Defined	2024-08-07
2024-03-31	$19,062,189	702,624	+6.1%	Shares	Defined	2024-05-14
2023-12-31	$20,521,578	662,200	+9.4%	Shares	Defined	2024-02-13
2023-06-30	$12,767,335	605,087	+3.6%	Shares	Defined	2023-08-14
2023-03-31	$9,956,586	583,964	-11.2%	Shares	Defined	2023-05-11
2022-12-31	$13,138,308	657,573	+0.5%	Shares	Defined	2023-02-13
2022-09-30	$14,098,963	654,548	+3.6%	Shares	Defined	2022-11-14
2022-06-30	$12,463,059	632,001	+7.3%	Shares	Defined	2022-08-12
2022-03-31	$13,845,189	589,157	-0.3%	Shares	Defined	2022-05-11
2021-12-31	$16,101,890	591,112	+9.0%	Shares	Defined	2022-02-07
2021-09-30	$14,933,124	542,234	-0.0%	Shares	Defined	2021-11-10
2021-06-30	$15,432,292	542,245	+13.7%	Shares	Defined	2021-08-05
2021-03-31	$16,242,124	476,868	-2.0%	Shares	Defined	2021-05-14
2020-12-31	$16,202,808	486,717	-1.0%	Shares	Defined	2021-02-12
2020-09-30	$15,794,945	491,442	+10.4%	Shares	Defined	2020-11-13
2020-06-30	$12,255,465	445,006	+3.5%	Shares	Defined	2020-08-13
2020-03-31	$6,889,197	429,769	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.