Alliant Energy Corp (LNT)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	32,094,212	$1,646,433,076	0.03%
2.	Blackrock Inc.	23,079,980	$1,184,002,959	0.03%
3.	State Street Corp	13,358,335	$685,282,586	0.03%
4.	Henderson Group Plc	9,594,512	$492,198,467	0.29%
5.	Victory Capital Management Inc	9,194,528	$471,679,286	0.49%