Builders Firstsource Inc. (BLDR)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	13,707,520	$1,959,215,834	0.03%
2.	Fmr Llc	10,898,366	$1,557,703,491	0.09%
3.	Blackrock, Inc.	9,781,856	$1,398,120,720	0.02%
4.	State Street Corp	5,120,603	$731,892,594	0.02%
5.	Geode Capital Management, Llc	2,759,354	$393,342,107	0.03%