PRIMECAP MANAGEMENT CO/CA/

Position in OSIS — Osi Systems Inc

CIK 763212 PASADENA, CA

Position in OSIS

as of Mar 31, 2026 · filed May 11, 2026 Compact

Position Value

$64,959,676

-$3,322,436 QoQ

Shares Held

244,660

-8.6% QoQ

Ownership

1.48%

of shares outstanding

% of Portfolio

0.05%

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")%

Technology · as of Mar 31, 2026

PRIMECAP MANAGEMENT CO/CA/ holds $3,360,841,701 across 5 Electronic Components names. OSIS ranks #5 (1.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FLEX	Flex Ltd.	25,383,448	$1,661,600,506
2	JBL	Jabil Inc	3,281,169	$871,576,921
3	GLW	Corning Inc /Ny	4,134,772	$562,204,948
4	OLED	Universal Display Corp \Pa\	2,187,428	$200,499,650
5	OSIS	Osi Systems Inc This page	244,660	$64,959,676

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$64,959,676	244,660	-8.6%	Shares	Sole	2026-05-11
2025-12-31	$68,282,112	267,710	-12.7%	Shares	Sole	2026-02-11
2025-09-30	$76,424,461	306,630	-4.6%	Shares	Sole	2025-11-12
2025-06-30	$72,274,501	321,420	-3.9%	Shares	Sole	2025-08-11
2025-03-31	$64,973,692	334,330	+12.3%	Shares	Sole	2025-05-09
2024-12-31	$49,845,585	297,710	+1.1%	Shares	Sole	2025-02-10
2024-09-30	$44,713,935	294,500	+4.9%	Shares	Sole	2024-11-08
2024-06-30	$38,590,862	280,620	-4.3%	Shares	Sole	2024-08-09
2024-03-31	$41,860,542	293,100	+2.8%	Shares	Sole	2024-05-14
2023-12-31	$36,805,060	285,200	+2.2%	Shares	Sole	2024-02-09
2023-09-30	$32,931,979	278,990	-3.9%	Shares	Sole	2023-11-13
2023-06-30	$34,211,940	290,350	-1.4%	Shares	Sole	2023-08-11
2023-03-31	$30,128,642	294,340	+0.4%	Shares	Sole	2023-05-15
2022-12-31	$23,324,011	293,310	-3.5%	Shares	Sole	2023-02-13
2022-09-30	$21,913,446	304,100	-2.8%	Shares	Sole	2022-11-14
2022-06-30	$26,725,632	312,800	-3.4%	Shares	Sole	2022-08-11
2022-03-31	$27,575,475	323,960	-3.8%	Shares	Sole	2022-05-11
2021-12-31	$31,373,916	336,630	-9.0%	Shares	Sole	2022-02-11
2021-09-30	$35,066,520	369,900	-2.6%	Shares	Sole	2021-11-12
2021-06-30	$38,618,118	379,950	-0.8%	Shares	Sole	2021-08-10
2021-03-31	$36,791,885	382,850	+9.6%	Shares	Sole	2021-05-14
2020-12-31	$32,571,068	349,400	-1.4%	Shares	Sole	2021-02-08
2020-09-30	$27,497,223	354,300	+31.2%	Shares	Sole	2020-11-13
2020-06-30	$20,160,264	270,100	+11.8%	Shares	Sole	2020-08-13
2020-03-31	$16,657,964	241,700	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.