Builders Firstsource Inc. (BLDR)

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Institutional Investors' Holdings

Filing Period: Filing is Ongoing

No.	Name	Shares	Value	% Port
1.	Voya Investment Management Llc	1,616,576	$195,758,288	0.2%
2.	Baillie Gifford & Co	1,469,801	$178,213,371	0.13%
3.	Massachusetts Financial Services Co	1,101,986	$133,615,802	0.04%
4.	Pacer Advisors, Inc.	534,626	$64,823,403	0.16%
5.	Sumitomo Mitsui Trust Holdings, Inc.	309,102	$37,478,618	0.02%