PRIMECAP MANAGEMENT CO/CA/

CIK

763212

City

PASADENA

State / Country

CA

Stock

GFF — Griffon Corp

Top Portfolio Positions

318 positions · $125,633,453,023 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio	Open
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 GFF

Compact Export CSV

Shares Held

Position Value (USD)

12 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$30,314,609	417,097	+1.6%	Shares	Sole	2026-05-11
2025-12-31	$30,236,786	410,547	+24.1%	Shares	Sole	2026-02-11
2025-09-30	$25,182,576	330,697	+16.6%	Shares	Sole	2025-11-12
2025-06-30	$20,523,335	283,589	+3.0%	Shares	Sole	2025-08-11
2025-03-31	$19,676,800	275,200	+15.4%	Shares	Sole	2025-05-09
2024-12-31	$16,990,768	238,400	+1.8%	Shares	Sole	2025-02-10
2024-09-30	$16,387,000	234,100	-1.7%	Shares	Sole	2024-11-08
2024-06-30	$15,205,066	238,100	+6.0%	Shares	Sole	2024-08-09
2024-03-31	$16,479,498	224,700	+1.4%	Shares	Sole	2024-05-14
2023-12-31	$13,512,615	221,700	0.0%	Shares	Sole	2024-02-09
2023-09-30	$8,794,839	221,700	+32.5%	Shares	Sole	2023-11-13
2023-06-30	$6,742,190	167,300	—	Shares	Sole	2023-08-11
No 13F history on record for this holder in this stock.