William Frels - Mairs & Power
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    245
Portfolio value:    $9,786,094,433
Holdings Activity Buys Sells    History
Holding/activity history for  Alliant Energy Corp. (LNT)
← All LNT superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 2,889,060 2.12 Reduce 2.30% 0.04 $64.93–74.40 · VW $70.92i $207,318,946 SEC
2025   Q4 2,956,947 1.85 Reduce 1.23% 0.02 $63.87–69.59 · VW $66.46i $192,231,124 SEC
2025   Q3 2,993,643 1.90 Reduce 1.59% 0.03 $63.28–69.75 · VW $66.62i $201,801,475 SEC
2025   Q2 3,042,142 1.82 Reduce 0.08% <0.01 $58.98–66.05 · VW $63.35i $183,958,327 SEC
2025   Q1 3,044,638 2.04 Reduce 22.21% 0.50 $57.09–66.54 · VW $61.56i $195,922,455 SEC
2024   Q4 3,913,967 2.24 Reduce 4.43% 0.10 $56.08–64.19 · VW $59.72i $231,472,008 SEC
2024   Q3 4,095,219 2.34 Add 6.89% 0.15 $55.17–62.49 · VW $59.22i $248,538,841 SEC
2024   Q2 3,831,399 1.88 Add 15.36% 0.25 $49.05–56.79 · VW $53.83i $195,018,209 SEC
2024   Q1 3,321,368 1.62 Add 4.66% 0.07 $46.80–50.61 · VW $49.07i $167,396,947 SEC
2023   Q4 3,173,484 1.72 Add 2.17% 0.04 $47.58–53.85 · VW $50.03i $162,799,729 SEC
2023   Q3 3,105,934 1.77 Add 14.30% 0.22 $45.15–54.11 · VW $49.35i $150,482,502 SEC
2023   Q2 2,717,431 1.55 Add 149.81% 0.93 $50.28–56.26 · VW $53.43i $142,610,779 SEC
2023   Q1 1,087,797 0.67 Add 59.55% 0.25 $49.66–55.95 · VW $53.58i $58,088,360 SEC
2022   Q4 681,800 0.45 Reduce 6.13% 0.03 $50.83–57.52 · VW $54.13i $37,642,178 SEC
2022   Q3 726,317 0.49 Reduce 5.76% 0.03 $47.19–64.62 · VW $54.66i $38,488,000 SEC
2022   Q2 770,745 0.54 Reduce 0.40% <0.01 $54.20–63.89 · VW $59.67i $45,173,000 SEC
2022   Q1 773,831 0.49 Reduce 0.15% <0.01 $54.80–65.37 · VW $59.66i $48,349,000 SEC
2021   Q4 774,984 0.44 Reduce 0.25% <0.01 $54.53–61.92 · VW $58.77i $47,638,000 SEC
2021   Q3 776,895 0.44 Add 0.62% <0.01 $54.46–62.35 · VW $57.79i $43,491,000 SEC
2021   Q2 772,081 0.43 Add 3.78% 0.02 $54.88–59.91 · VW $57.77i $43,051,000 SEC
2021   Q1 743,958 0.42 Add 44.40% 0.13 $45.99–57.81 · VW $53.32i $40,293,000 SEC
2020   Q4 515,221 0.30 Add 129.06% 0.17 $47.21–58.10 · VW $51.32i $26,549,000 SEC
2020   Q3 224,924 0.15 Add 3903.63% 0.15 $48.89–57.52 · VW $53.90i $11,617,000 SEC
2020   Q2 5,618 <0.01 $47.88 $269,000 SEC
2020   Q1 5,618 <0.01 $48.24 $271,000 SEC
2019   Q4 5,618 <0.01 $54.65 $307,000 SEC
2019   Q3 5,618 <0.01 $53.93 $303,000 SEC
2019   Q2 5,618 <0.01 Reduce 22.27% <0.01 $46.01–50.95 · VW $48.83i $276,000 SEC
2019   Q1 7,228 <0.01 $47.18 $341,000 SEC
2018   Q4 7,228 <0.01 $42.20 $305,000 SEC
2018   Q3 7,228 <0.01 Reduce 4.86% <0.01 $41.39–44.70 · VW $43.02i $308,000 SEC
2018   Q2 7,597 <0.01 Add 5.11% <0.01 $38.22–43.95 · VW $41.71i $322,000 SEC
2018   Q1 7,228 <0.01 $40.81 $295,000 SEC
2017   Q4 7,228 <0.01 $42.61 $308,000 SEC
2017   Q3 7,228 <0.01 Reduce 17.19% <0.01 $40.50–43.97 · VW $42.58i $300,000 SEC
2017   Q2 8,728 <0.01 $40.22 $351,000 SEC
2017   Q1 8,728 <0.01 $39.64 $346,000 SEC
2016   Q4 8,728 <0.01 $37.92 $331,000 SEC
2016   Q3 8,728 <0.01 $38.27 $334,000 SEC
2016   Q2 8,728 <0.01 $39.76 $347,000 SEC
2016   Q1 8,728 <0.01 $37.12 $324,000 SEC
2015   Q4 8,728 <0.01 $31.28 $273,000 SEC
2015   Q3 8,728 <0.01 $29.22 $255,000 SEC
2015   Q2 8,728 <0.01 $28.88 $252,000 SEC
2015   Q1 8,728 <0.01 Reduce 2.96% <0.01 $29.96–34.67 · VW $31.62i $275,000 SEC
2014   Q4 8,994 <0.01 $33.25 $299,000 SEC
2014   Q3 8,994 <0.01 Reduce 1.47% <0.01 $27.34–31.15 · VW $29.82i $249,000 SEC
2014   Q2 9,128 <0.01 $30.46 $278,000 SEC
2014   Q1 9,128 <0.01 Add 15.40% <0.01 $25.19–29.40 · VW $27.94i $259,000 SEC
2013   Q4 7,910 <0.01 Buy <0.01 $25.00–26.84 · VW $25.94i $204,000 SEC
2012   Q3 0 0.00 Sell 100.00% <0.01 $21.48–23.75 · VW $22.53i SEC
2012   Q2 12,482 <0.01 Add 3.31% <0.01 $21.50–23.83 · VW $22.89i $284,000 SEC
2012   Q1 12,082 <0.01 Buy <0.01 $21.00–22.69 · VW $22.10i $262,000 SEC
Price snapshot:
Current price$76.63
Avg. buy price$52.40
+/- since buy46.23%
52-week low$59.74
52-week high$78.81