Builders Firstsource Inc. (BLDR)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	7,833,417	$700,934,166	0.01%
2.	Vanguard Capital Management Llc	6,854,631	$613,352,382	0.01%
3.	State Street Corp	4,839,758	$433,067,055	0.01%
4.	Vanguard Portfolio Management Llc	4,162,116	$372,426,140	0.02%
5.	Capital International Investors	3,907,321	$349,627,083	0.07%