Alliant Energy Corp (LNT)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	33,785,294	$2,196,381,964	0.03%
2.	Blackrock, Inc.	24,325,896	$1,581,426,530	0.03%
3.	State Street Corp	16,881,617	$1,097,473,921	0.04%
4.	Henderson Group Plc	11,134,938	$723,882,410	0.32%
5.	Victory Capital Management Inc	8,578,743	$557,704,083	0.31%