West Pharmaceutical Services Inc (WST)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	8,987,462	$2,943,933,053	0.05%
2.	Blackrock, Inc.	7,450,720	$2,440,557,908	0.04%
3.	Bank Of New York Mellon Corp	3,449,811	$1,130,020,219	0.2%
4.	State Street Corp	3,246,713	$1,063,534,357	0.04%
5.	Artisan Partners Limited Partnership	3,110,903	$1,019,007,387	1.53%