AMERICAN CENTURY COMPANIES INC

Position in XENE — Xenon Pharmaceuticals Inc.

CIK 748054 KANSAS CITY, MO

Position in XENE

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

Position Value

$39,502,109

+$9,003,310 QoQ

Shares Held

679,314

-0.2% QoQ

Ownership

0.703%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2022

10 quarters on record

Voting authority Sole 84.5096671053445.ToString("F0")% Shared 15.49033289465549.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

AMERICAN CENTURY COMPANIES INC holds $3,844,388,733 across 170 Biotechnology names. XENE ranks #24 (1.0% 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	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

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$39,502,109	679,314	-0.2%	Shares	Defined	2026-05-15
2025-12-31	$30,498,799	680,473	+3.2%	Shares	Defined	2026-02-13
2025-09-30	$26,469,168	659,257	-3.0%	Shares	Defined	2025-11-12
2025-06-30	$21,279,524	679,857	+11270.7%	Shares	Defined	2025-08-12
2024-06-30	$233,121	5,979	-38.1%	Shares	Defined	2024-08-07
2024-03-31	$415,647	9,655	+34.1%	Shares	Defined	2024-05-14
2023-12-31	$331,585	7,199	-24.0%	Shares	Defined	2024-02-13
2023-03-31	$339,074	9,474	-13.9%	Shares	Defined	2023-05-11
2022-12-31	$433,927	11,005	+65.0%	Shares	Defined	2023-02-13
2022-09-30	$240,787	6,670	—	Shares	Defined	2022-11-14
No filing history on record for this holder in this stock.