Alliant Energy Corp (LNT)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	32,822,215	$2,112,109,535	0.04%
2.	Blackrock, Inc.	23,599,327	$1,518,616,664	0.03%
3.	State Street Corp	16,383,841	$1,054,300,168	0.04%
4.	Henderson Group Plc	10,867,962	$690,984,818	0.38%
5.	Victory Capital Management Inc	10,590,100	$681,472,935	0.7%