MGE Energy, Inc.
US ˙ NasdaqGS ˙ US55277P1049

SecurityMGEE / MGE Energy, Inc.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership10,530 shares
Latest Disclosed Value $ 813,830
Mercer Global Advisors Inc /adv reports 1.27% decrease in ownership of MGEE / MGE Energy, Inc.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 10,530 shares of MGE Energy, Inc. (US:MGEE) valued at $813,864 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 10,665 shares of MGE Energy, Inc.. This represents a change in shares of -1.27% during the quarter. The current value of the position is $796,700 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 MGE ENERGY COM 55277P104 10,530 -135 -1.27 814 -2.75 0.0012
2026-02-17 2025-12-31 13F MGE ENERGY COM 55277P104 10,665 -3,452 -24.45 836 -29.63 0.0013
2025-11-14 2025-09-30 13F MGE ENERGY COM 55277P104 14,117 1,222 9.48 1,188 4.21 0.0020
2025-08-14 2025-06-30 13F MGE ENERGY COM 55277P104 12,895 548 4.44 1,140 -0.61 0.0023
2025-05-15 2025-03-31 13F MGE ENERGY COM 55277P104 12,347 208 1.71 1,148 0.61 0.0026
2025-02-14 2024-12-31 13F MGE ENERGY COM 55277P104 12,139 -447 -3.55 1,141 -1.30 0.0028
2024-11-14 2024-09-30 13F MGE ENERGY COM 55277P104 12,586 6 0.05 1,155 23.00 0.0027
2024-08-12 2024-06-30 13F MGE ENERGY COM 55277P104 12,580 1,953 18.38 940 0.0026
2024-05-15 2024-03-31 13F MGE ENERGY COM 55277P104 10,627 -339 -3.09 1 0.0024
2024-02-15 2023-12-31 13F MGE ENERGY COM 55277P104 10,966 668 6.49 1 0.0024
2023-11-15 2023-09-30 13F/A-1 MGE ENERGY COM 55277P104 10,298 822 8.67 1 0.0027
2023-11-14 2023-09-30 13F MGE ENERGY COM 55277P104 10,298 822 1 0.0027
2023-08-14 2023-06-30 13F MGE ENERGY COM 55277P104 9,476 -378 -3.84 1 0.0030
2023-05-16 2023-03-31 13F MGE ENERGY COM 55277P104 9,854 0 0.00 1 0.0035
2023-02-09 2022-12-31 13F MGE ENERGY COM 55277P104 9,854 -21 -0.21 1 -100.00 0.0035
2022-11-15 2022-09-30 13F MGE ENERGY COM 55277P104 9,875 8 0.08 648 -15.62 0.0038
2022-08-10 2022-06-30 13F MGE ENERGY COM 55277P104 9,867 4 0.04 768 -2.41 0.0047
2022-05-10 2022-03-31 13F MGE ENERGY COM 55277P104 9,863 -1,159 -10.52 787 -13.23 0.0046
2022-02-04 2021-12-31 13F MGE ENERGY COM 55277P104 11,022 -2,160 -16.39 907 -6.40 0.0056
2021-11-10 2021-09-30 13F MGE ENERGY COM 55277P104 13,182 1,430 12.17 969 10.74 0.0068
2021-08-10 2021-06-30 13F MGE ENERGY COM 55277P104 11,752 -14 -0.12 875 4.17 0.0067
2021-08-10 2021-03-31 13F/A-1 MGE ENERGY COM 55277P104 11,766 760 6.91 840 8.95 0.0076
2021-05-11 2021-03-31 13F MGE ENERGY COM 55277P104 11,766 760 840 0.0080
2021-02-12 2020-12-31 13F MGE ENERGY COM 55277P104 11,006 5 0.05 771 11.90 0.0096
2020-12-10 2020-09-30 13F MGE ENERGY COM 55277P104 11,001 -1 -0.01 689 -2.96 0.0104
2020-08-10 2020-06-30 13F MGE ENERGY COM 55277P104 11,002 -821 -6.94 710 -8.27 0.0129
2020-05-18 2020-03-31 13F MGE ENERGY COM 55277P104 11,823 1,280 12.14 774 -6.86 0.0170
2020-02-13 2019-12-31 13F MGE ENERGY INC COM COM 55277P104 10,543 4 0.04 831 -1.19 0.0166
2019-11-12 2019-09-30 13F MGE ENERGY INC COM COM 55277P104 10,539 4,245 67.45 841 82.83 0.0198
2019-08-14 2019-06-30 13F MGE ENERGY INC COM COM 55277P104 6,294 4 0.06 460 7.48 0.0122
2019-04-23 2019-03-31 13F/A-1 MGE ENERGY INC COM COM 55277P104 6,290 6,290 428 0.0154
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.