Quest Diagnostics Inc (DGX)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	9,172,292	$1,797,585,732	0.03%
2.	Vanguard Capital Management Llc	7,145,672	$1,400,408,799	0.03%
3.	Vanguard Portfolio Management Llc	6,081,400	$1,191,832,772	0.06%
4.	State Street Corp	5,380,821	$1,054,533,300	0.04%
5.	Boston Partners	4,012,232	$786,652,146	0.82%