PRIMECAP MANAGEMENT CO/CA/

CIK

763212

City

PASADENA

State / Country

Stock

UNP — Union Pacific Corp

Top Portfolio Positions

318 positions · $125,633,453,023 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%

Portfolio Trend

25 quarters · across all stocks

Holdings in UNP

Compact Export CSV

Shares Held

Position Value (USD)

25 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$199,734,488	823,240	-13.9%	Shares	Sole	2026-05-11
2025-12-31	$221,081,776	955,740	-8.8%	Shares	Sole	2026-02-11
2025-09-30	$247,748,851	1,048,140	-4.7%	Shares	Sole	2025-11-12
2025-06-30	$253,172,209	1,100,366	-25.8%	Shares	Sole	2025-08-11
2025-03-31	$350,504,563	1,483,680	-0.9%	Shares	Sole	2025-05-09
2024-12-31	$341,439,731	1,497,280	-6.7%	Shares	Sole	2025-02-10
2024-09-30	$395,602,864	1,605,010	+0.1%	Shares	Sole	2024-11-08
2024-06-30	$362,959,504	1,604,170	-0.6%	Shares	Sole	2024-08-09
2024-03-31	$396,881,834	1,613,800	-0.7%	Shares	Sole	2024-05-14
2023-12-31	$399,304,434	1,625,700	-0.2%	Shares	Sole	2024-02-09
2023-09-30	$331,753,996	1,629,200	-1.4%	Shares	Sole	2023-11-13
2023-06-30	$337,970,854	1,651,700	-19.4%	Shares	Sole	2023-08-11
2023-03-31	$412,482,370	2,049,500	-20.9%	Shares	Sole	2023-05-15
2022-12-31	$536,497,663	2,590,900	-1.6%	Shares	Sole	2023-02-13
2022-09-30	$513,077,952	2,633,600	-0.7%	Shares	Sole	2022-11-14
2022-06-30	$565,426,608	2,651,100	-1.8%	Shares	Sole	2022-08-11
2022-03-31	$737,287,784	2,698,612	-8.9%	Shares	Sole	2022-05-11
2021-12-31	$746,320,455	2,962,412	-3.3%	Shares	Sole	2022-02-11
2021-09-30	$600,400,583	3,063,112	-0.2%	Shares	Sole	2021-11-12
2021-06-30	$674,923,823	3,068,812	-4.5%	Shares	Sole	2021-08-10
2021-03-31	$708,554,671	3,214,712	+4.7%	Shares	Sole	2021-05-14
2020-12-31	$639,112,966	3,069,412	+0.1%	Shares	Sole	2021-02-08
2020-09-30	$603,586,095	3,065,912	-1.0%	Shares	Sole	2020-11-13
2020-06-30	$523,392,027	3,095,712	+0.9%	Shares	Sole	2020-08-13
2020-03-31	$432,909,868	3,069,412	—	Shares	Sole	2020-05-14
No 13F history on record for this holder in this stock.