DIMENSIONAL FUND ADVISORS LP

Position in ALT — Altimmune, Inc.

CIK 354204 AUSTIN, TX

Position in ALT

as of Mar 31, 2026 · filed May 7, 2026 Compact

Position Value

$3,221,450

+$2,197,284 QoQ

Shares Held

1,045,926

+268.7% QoQ

Ownership

0.538%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

21 quarters on record

Voting authority Sole 89.76533712710078.ToString("F0")% Shared 4.852924585486927.ToString("F0")% None 5.381738287412303.ToString("F0")%

Healthcare · as of Mar 31, 2026

DIMENSIONAL FUND ADVISORS LP holds $5,003,215,874 across 223 Biotechnology names. ALT ranks #110 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	989,342	$441,780,774
2	REGN	Regeneron Pharmaceuticals, Inc.	513,060	$396,410,676
3	JAZZ	Jazz Pharmaceuticals plc	1,895,215	$358,290,394
4	BMRN	Biomarin Pharmaceutical Inc	3,802,930	$214,827,514
5	ROIV	Roivant Sciences Ltd.	7,475,866	$207,081,486
6	INCY	Incyte Corp	1,975,544	$185,938,199
7	EXEL	Exelixis, Inc.	4,299,597	$184,409,714
8	HALO	Halozyme Therapeutics, Inc.	2,079,827	$134,419,216

21 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,221,450	1,045,926	+268.7%	Shares	Sole	2026-05-07
2025-12-31	$1,024,166	283,703	-4.7%	Shares	Sole	2026-02-12
2025-09-30	$1,122,662	297,789	-33.5%	Shares	Sole	2025-11-12
2025-06-30	$1,731,706	447,470	-9.1%	Shares	Sole	2025-08-12
2025-03-31	$2,462,345	492,469	-22.3%	Shares	Sole	2025-05-13
2024-12-31	$4,567,107	633,441	-2.0%	Shares	Sole	2025-02-13
2024-09-30	$3,968,753	646,377	+13.4%	Shares	Sole	2024-11-07
2024-06-30	$3,791,656	570,174	+142.9%	Shares	Sole	2024-08-09
2024-03-31	$2,389,550	234,730	-10.2%	Shares	Sole	2024-05-10
2023-12-31	$2,942,076	261,518	+38.2%	Shares	Sole	2024-02-07
2023-09-30	$492,051	189,251	-26.1%	Shares	Sole	2023-11-09
2023-06-30	$904,575	256,254	-54.8%	Shares	Sole	2023-08-09
2023-03-31	$2,390,632	566,501	+218.5%	Shares	Sole	2023-05-12
2022-12-31	$2,925,878	177,865	+2.0%	Shares	Sole	2023-02-09
2022-09-30	$2,226,743	174,373	+41.3%	Shares	Sole	2022-11-10
2022-06-30	$1,443,358	123,364	+69.7%	Shares	Sole	2022-08-12
2022-03-31	$442,755	72,702	-7.4%	Shares	Defined	2022-05-13
2021-12-31	$718,785	78,470	+62.3%	Shares	Defined	2022-02-09
2020-09-30	$638,246	48,352	0.0%	Shares	Sole	2020-11-12
2020-06-30	$517,849	48,352	0.0%	Shares	Sole	2020-08-13
2020-03-31	$155,209	48,352	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.