ALLIANT ENERGY CORP (LNT) Institutional Ownership

LNT is currently held by 3 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $260.08M based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026.

The largest disclosed holder is Mairs & Power Growth Fund, which reported ownership valued at approximately $207.32M in its March 31, 2026 13F filing. Based on current market prices and the latest disclosed share count, Mairs & Power Growth Fund's LNT position is now estimated to be worth approximately $220.12M, representing an estimated gain of +6.17% since the filing period.

Major shareholders tracked on this page include Mairs & Power Growth Fund, Renaissance Technologies LLC, Sequoia Financial Advisors, and other prominent asset managers. Collectively, these investors account for approximately 100% of the total disclosed value among the investors covered in this analysis.

This page tracks 13F-reported ownership trends, hedge fund exposure, portfolio concentration, historical 13F filings, and estimated holding performance to help investors analyze smart money sentiment toward ALLIANT ENERGY CORP (LNT).

Institutional Ownership Trend

Portfolio quarterInstitutional holdersTotal reported valueTotal shares
Q1 20263$260,084,4233,624,365
Q4 20253$221,541,2023,407,802
Q3 20253$220,956,2203,277,796
Q2 20253$194,914,9283,223,333
Q1 20252$204,236,4753,173,838
Q4 20241$231,472,0083,913,967
Q3 20241$248,538,8414,095,219
Q2 20242$216,032,7834,244,259
Q1 20242$167,411,9063,618,168
Q4 20233$163,019,4023,447,196
Q3 20231$150,482,5023,105,934
Q2 20232$142,616,9192,834,431

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