ALLIANT ENERGY CORP (LNT) Institutional Ownership Changes & 13F Activity

ALLIANT ENERGY CORP (LNT) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Mairs & Power Growth Fund, and Sequoia Financial Advisors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCBuy289,300710,700$50,999,832
Q1 2026Mairs & Power Growth FundSell-67,8872,889,060$207,318,946
Q1 2026Sequoia Financial AdvisorsSell-4,85024,605$1,765,645
Q4 2025Renaissance Technologies LLCBuy161,000421,400$27,395,214
Q4 2025Mairs & Power Growth FundSell-36,6962,956,947$192,231,124
Q4 2025Sequoia Financial AdvisorsBuy5,70229,455$1,914,864
Q3 2025Renaissance Technologies LLCBuy98,579260,400$17,553,564
Q3 2025Mairs & Power Growth FundSell-48,4992,993,643$201,801,475
Q3 2025Sequoia Financial AdvisorsBuy4,38323,753$1,601,181
Q2 2025Renaissance Technologies LLCBuy32,621161,821$9,785,316
Q2 2025Sequoia Financial AdvisorsBuy15,35819,370$1,171,285
Q2 2025Mairs & Power Growth FundSell-2,4963,042,142$183,958,327
Q1 2025Mairs & Power Growth FundSell-869,3293,044,638$195,922,455
Q1 2025Renaissance Technologies LLCSell-283,660129,200$8,314,020
Q4 2024Mairs & Power Growth FundSell-181,2523,913,967$231,472,008
Q3 2024Mairs & Power Growth FundBuy263,8204,095,219$248,538,841
Q2 2024Mairs & Power Growth FundBuy510,0313,831,399$195,018,209
Q2 2024Renaissance Technologies LLCBuy116,060412,860$21,014,574
Q1 2024Mairs & Power Growth FundBuy147,8843,321,368$167,396,947
Q1 2024Renaissance Technologies LLCBuy27,100296,800$14,959
Q4 2023Renaissance Technologies LLCBuy152,700269,700$13,836
Q4 2023Mairs & Power Growth FundBuy67,5503,173,484$162,799,729
Q4 2023Sequoia Financial AdvisorsBuy4,0124,012$205,837
Q3 2023Mairs & Power Growth FundBuy388,5033,105,934$150,482,502
Q2 2023Mairs & Power Growth FundBuy1,629,6342,717,431$142,610,779
Q2 2023Renaissance Technologies LLCSell-341,550117,000$6,140
Q1 2023Mairs & Power Growth FundBuy405,9971,087,797$58,088,360
Q1 2023Renaissance Technologies LLCSell-183,400458,550$24,487
Q4 2022Renaissance Technologies LLCSell-165,501641,950$35,442
Q4 2022Mairs & Power Growth FundSell-44,517681,800$37,642,178

Frequently asked questions about LNT activity

  • Which institutional owners are buying LNT?

    Institutional owners buying LNT include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in LNT activity?

    "Buy" means an investor increased their reported position in LNT compared to the prior reporting period. This reflects growing exposure to ALLIANT ENERGY CORP (LNT) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in LNT increasing?

    Institutional interest in LNT can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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