Palo Alto Investors LP

Position in ALKS — Alkermes plc.

CIK 1306923 PALO ALTO, CA

Position in ALKS

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

Position Value

$8,576,921

+$1,790,093 QoQ

Shares Held

242,560

0.0% QoQ

Ownership

0.146%

of shares outstanding

% of Portfolio

1.34%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2020

22 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 $48,813,712 across 4 Drug Manufacturers - Specialty & Generic names. ALKS ranks #2 (17.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	UTHR	UNITED THERAPEUTICS Corp	62,809	$37,244,480
2	ALKS	Alkermes plc. This page	242,560	$8,576,921
3	NBIX	Neurocrine Biosciences Inc	18,117	$2,386,733
4	XERS	Xeris Biopharma Holdings, Inc.	104,410	$605,578

22 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$8,576,921	242,560	0.0%	Shares	Sole	2026-05-15
2025-12-31	$6,786,828	242,560	+31.9%	Shares	Sole	2026-02-17
2025-09-30	$5,518,140	183,938	-16.8%	Shares	Sole	2025-11-14
2025-06-30	$6,323,410	221,021	-0.2%	Shares	Sole	2025-08-14
2025-03-31	$7,314,359	221,513	-23.4%	Shares	Sole	2025-05-15
2024-12-31	$8,320,498	289,308	-24.8%	Shares	Sole	2025-02-14
2024-09-30	$10,766,521	384,656	-22.4%	Shares	Sole	2024-11-14
2024-06-30	$11,943,767	495,592	0.0%	Shares	Sole	2024-08-14
2024-03-31	$13,415,675	495,592	-17.9%	Shares	Sole	2024-05-15
2023-12-31	$16,738,316	603,400	0.0%	Shares	Sole	2024-02-15
2023-09-30	$16,901,234	603,400	0.0%	Shares	Sole	2023-11-14
2023-06-30	$18,886,420	603,400	0.0%	Shares	Sole	2023-08-14
2023-03-31	$17,009,846	603,400	0.0%	Shares	Sole	2023-05-15
2022-12-31	$15,766,842	603,400	0.0%	Shares	Sole	2023-02-14
2022-09-30	$13,473,922	603,400	0.0%	Shares	Sole	2022-11-14
2022-06-30	$17,975,286	603,400	-10.4%	Shares	Sole	2022-08-15
2022-03-31	$17,721,653	673,571	-10.7%	Shares	Sole	2022-05-16
2021-12-31	$17,542,692	754,200	+27.9%	Shares	Sole	2022-02-14
2021-09-30	$18,192,516	589,900	+21.1%	Shares	Sole	2021-11-15
2021-06-30	$11,943,692	487,100	0.0%	Shares	Sole	2021-08-16
2021-03-31	$9,099,028	487,100	+223.4%	Shares	Sole	2021-05-17
2020-12-31	$3,004,430	150,598	—	Shares	Sole	2021-02-16
No filing history on record for this holder in this stock.