PRIMECAP MANAGEMENT CO/CA/

CIK

763212

City

PASADENA

State / Country

Stock

Top Portfolio Positions

318 positions · $125,609,644,506 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
LLY	ELI LILLY & Co Healthcare	9,223,432	$8,483,436,050	6.75%
MU	Micron Technology Inc Technology	21,874,204	$7,389,981,079	5.88%
GOOGL	Alphabet Inc. Communication Services	14,987,459	$4,309,793,710	3.43%
AZN	Astrazeneca PLC Healthcare	18,213,708	$3,592,107,491	2.86%
KLAC	Kla Corp Technology	2,437,647	$3,589,215,819	2.86%
INTC	Intel Corp Technology	75,761,968	$3,343,375,647	2.66%
AMGN	Amgen Inc Healthcare	8,874,129	$3,122,362,288	2.49%
NVDA	Nvidia Corp Technology	17,188,230	$2,997,627,312	2.39%
FDX	Fedex Corp Industrials	8,303,010	$2,957,366,101	2.35%
BIIB	Biogen Inc. Healthcare	14,757,607	$2,705,512,091	2.15%

25 quarters · across all stocks

25 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$82,746,516	840,749	-0.3%	Shares	Sole	2026-05-11
2025-12-31	$75,929,411	843,379	-1.2%	Shares	Sole	2026-02-11
2025-09-30	$79,635,406	853,999	-0.7%	Shares	Sole	2025-11-12
2025-06-30	$92,728,300	859,949	+2.8%	Shares	Sole	2025-08-11
2025-03-31	$95,418,407	836,270	-1.6%	Shares	Sole	2025-05-09
2024-12-31	$75,901,038	849,480	-1.6%	Shares	Sole	2025-02-10
2024-09-30	$71,170,342	862,880	-0.6%	Shares	Sole	2024-11-08
2024-06-30	$76,218,768	867,700	-1.3%	Shares	Sole	2024-08-09
2024-03-31	$66,519,045	879,300	0.0%	Shares	Sole	2024-05-14
2023-12-31	$58,614,138	879,300	0.0%	Shares	Sole	2024-02-09
2023-09-30	$62,755,641	879,300	+7.8%	Shares	Sole	2023-11-13
2023-06-30	$51,416,160	816,000	+1.2%	Shares	Sole	2023-08-11
2023-03-31	$61,350,455	806,500	+11.7%	Shares	Sole	2023-05-15
2022-12-31	$47,767,520	722,000	-5.2%	Shares	Sole	2023-02-13
2022-09-30	$55,430,981	761,310	-0.4%	Shares	Sole	2022-11-14
2022-06-30	$47,611,856	763,990	-0.6%	Shares	Sole	2022-08-11
2022-03-31	$51,985,329	768,900	-1.2%	Shares	Sole	2022-05-11
2021-12-31	$52,102,660	778,000	-5.4%	Shares	Sole	2022-02-11
2021-09-30	$45,160,716	822,300	-2.8%	Shares	Sole	2021-11-12
2021-06-30	$40,238,406	845,700	-0.0%	Shares	Sole	2021-08-10
2021-03-31	$37,953,354	846,040	+57.7%	Shares	Sole	2021-05-14
2020-12-31	$20,002,211	536,540	-3.7%	Shares	Sole	2021-02-08
2020-09-30	$23,151,660	557,200	-8.2%	Shares	Sole	2020-11-13
2020-06-30	$22,611,709	606,700	0.0%	Shares	Sole	2020-08-13
2020-03-31	$15,452,649	606,700	—	Shares	Sole	2020-05-14
No 13F history on record for this holder in this stock.