Alkermes Plc. (ALKS)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Blackrock Inc.	30,022,427	$832,822,125	0.02%
2.	Vanguard Group Inc	20,955,454	$581,304,294	0.01%
3.	Wellington Management Group Llp	15,241,470	$422,798,379	0.07%
4.	State Street Corp	9,352,970	$259,451,388	0.01%
5.	Johnston Asset Management Llc	5,476,255	$151,911,314	4.87%