Berkshire Hathaway Inc (BRK-B)

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Institutional Investors' Holdings

Filing Period: Filing is Ongoing

No.	Name	Shares	Value	% Port
1.	Assenagon Asset Management S.a.	4,558,653	$2,269,981,261	2.2%
2.	Tetrad Corp	1,923,123	$957,619,098	92.27%
3.	Wealth Enhancement Advisory Services, Llc	798,546	$397,719,380	0.59%
4.	Davenport & Co Llc	705,870	$352,137,779	1.77%
5.	Czech National Bank	535,117	$266,461,510	1.41%