Alliant Energy Corporation
US ˙ NasdaqGS ˙ US0188021085

SecurityLNT / Alliant Energy Corporation
InstitutionCerity Partners LLC
Latest Disclosed Ownership72,206 shares
Latest Disclosed Value $ 5,181,414
Cerity Partners LLC reports 42.81% increase in ownership of LNT / Alliant Energy Corporation

On May 15, 2026 - Cerity Partners LLC filed a 13F-HR form disclosing ownership of 72,206 shares of Alliant Energy Corporation (US:LNT) valued at $5,181,503 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 50,561 shares of Alliant Energy Corporation. This represents a change in shares of 42.81% during the quarter. The current value of the position is $5,111,463 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ALLIANT ENERGY COM 018802108 72,206 21,645 42.81 5,181 57.57 0.0073
2026-02-11 2025-12-31 13F ALLIANT ENERGY COM 018802108 50,561 -10,511 -17.21 3,288 -20.12 0.0048
2025-10-22 2025-09-30 13F ALLIANT ENERGY COM 018802108 61,072 354 0.58 4,117 12.03 0.0067
2025-08-13 2025-06-30 13F ALLIANT ENERGY Equities 018802108 60,718 14,790 32.20 3,674 24.33 0.0066
2025-04-30 2025-03-31 13F ALLIANT ENERGY Stock 018802108 45,928 -20,168 -30.51 2,955 -25.13 0.0060
2025-02-13 2024-12-31 13F ALLIANT ENERGY COM 018802108 66,096 -12,149 -15.53 3,947 -16.87 0.0086
2024-11-12 2024-09-30 13F ALLIANT ENERGY Stock 018802108 78,245 14,827 23.38 4,749 47.13 0.0105
2024-08-13 2024-06-30 13F ALLIANT ENERGY Stock 018802108 63,418 -20,294 -24.24 3,228 -23.49 0.0085
2024-05-14 2024-03-31 13F ALLIANT ENERGY Equities 018802108 83,712 31,476 60.26 4,219 57.45 0.0111
2024-01-26 2023-12-31 13F ALLIANT ENERGY Equity 018802108 52,236 4,890 10.33 2,680 16.83 0.0088
2023-11-14 2023-09-30 13F ALLIANT ENERGY COM 018802108 47,346 -6,684 -12.37 2,294 -19.12 0.0112
2023-08-14 2023-06-30 13F ALLIANT ENERGY Stock 018802108 54,030 1,334 2.53 2,835 0.00 0.0110
2023-05-11 2023-03-31 13F ALLIANT ENERGY Stock 018802108 52,696 2,347 4.66 2,836 1.98 0.0067
2023-02-15 2022-12-31 13F ALLIANT ENERGY Stock 018802108 50,349 22,699 82.09 2,781 89.76 0.0178
2022-11-14 2022-09-30 13F ALLIANT ENERGY Equities 018802108 27,650 -773 -2.72 1,465 -6.51 0.0176
2022-08-10 2022-06-30 13F ALLIANT ENERGY Equities 018802108 28,423 21,147 290.64 1,567 245.15 0.0173
2022-04-25 2022-03-31 13F ALLIANT ENERGY COM 018802108 7,276 7,276 454 0.0071
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.