Graham Holdings Co

CIK

104889

City

ARLINGTON

State / Country

Stock

CABO — Cable One, Inc.

Top Portfolio Positions

3 positions · $150,540,189 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
MKL	Markel Group Inc. Financial Services	55,430	$106,096,894	70.48%
PUBM	PubMatic, Inc. Technology	3,398,904	$27,803,034	18.47%
CABO	Cable One, Inc. Communication Services	182,439	$16,640,261	11.05%

18 quarters · across all stocks

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3 of 3 shown

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$16,640,261	182,439	0.0%	Shares	Sole	2026-05-15
2025-12-31	$20,588,241	182,439	0.0%	Shares	Sole	2026-02-13
2025-09-30	$32,300,824	182,439	—	Shares	Sole	2025-11-14
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