Palo Alto Investors LP

Position in ACAD — Acadia Pharmaceuticals Inc

CIK 1306923 PALO ALTO, CA

Position in ACAD

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

Position Value

$63,946,190

-$2,402,278 QoQ

Shares Held

2,872,695

+15.6% QoQ

Ownership

1.68%

of shares outstanding

% of Portfolio

9.78%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

Palo Alto Investors LP holds $542,554,052 across 38 Biotechnology names. ACAD ranks #2 (11.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	INSM	INSMED Inc	415,269	$67,904,786
2	ACAD	Acadia Pharmaceuticals Inc This page	2,872,695	$63,946,190
3	PTCT	Ptc Therapeutics, Inc.	921,607	$62,789,084
4	BMRN	Biomarin Pharmaceutical Inc	685,182	$38,705,931
5	ANAB	Anaptysbio, Inc	638,161	$35,392,409
6	MIRM	Mirum Pharmaceuticals, Inc.	325,175	$30,039,666
7	DYN	Dyne Therapeutics, Inc.	1,652,972	$29,968,382
8	IRON	Disc Medicine, Inc.	401,719	$25,685,912

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$63,946,190	2,872,695	+15.6%	Shares	Sole	2026-05-15
2025-12-31	$66,348,468	2,484,031	+0.7%	Shares	Sole	2026-02-17
2025-09-30	$52,639,036	2,466,684	-3.8%	Shares	Sole	2025-11-14
2025-06-30	$55,288,418	2,563,209	-3.8%	Shares	Sole	2025-08-14
2025-03-31	$44,247,794	2,663,925	-3.1%	Shares	Sole	2025-05-15
2024-12-31	$50,436,791	2,748,599	+8.9%	Shares	Sole	2025-02-14
2024-09-30	$38,818,443	2,523,956	+4.3%	Shares	Sole	2024-11-14
2024-06-30	$39,306,166	2,418,841	+0.2%	Shares	Sole	2024-08-14
2024-03-31	$44,652,296	2,414,943	+0.2%	Shares	Sole	2024-05-15
2023-12-31	$75,443,198	2,409,556	+0.2%	Shares	Sole	2024-02-15
2023-09-30	$50,136,726	2,405,793	0.0%	Shares	Sole	2023-11-14
2023-06-30	$57,618,742	2,405,793	0.0%	Shares	Sole	2023-08-14
2023-03-31	$45,277,024	2,405,793	+1.2%	Shares	Sole	2023-05-15
2022-12-31	$37,831,794	2,376,369	+41.6%	Shares	Sole	2023-02-14
2022-09-30	$27,455,286	1,678,196	0.0%	Shares	Sole	2022-11-14
2022-06-30	$23,645,781	1,678,196	-25.5%	Shares	Sole	2022-08-15
2022-03-31	$54,539,419	2,251,834	-3.7%	Shares	Sole	2022-05-16
2021-12-31	$54,566,049	2,337,877	0.0%	Shares	Sole	2022-02-14
2021-09-30	$38,832,136	2,337,877	0.0%	Shares	Sole	2021-11-15
2021-06-30	$57,020,820	2,337,877	0.0%	Shares	Sole	2021-08-16
2021-03-31	$60,317,226	2,337,877	+1.6%	Shares	Sole	2021-05-17
2020-12-31	$123,036,960	2,301,477	+25.6%	Shares	Sole	2021-02-16
2020-09-30	$75,582,375	1,832,300	+17.1%	Shares	Sole	2020-11-16
2020-06-30	$75,850,703	1,564,900	-4.1%	Shares	Sole	2020-08-14
2020-03-31	$68,931,889	1,631,524	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.