Constellation Energy Corporation
MX ˙ BMV ˙ US21037T1097
SecurityMX:CEG / Constellation Energy Corporation
InstitutionCostello Asset Management, INC
Latest Disclosed Ownership11,418 shares
Latest Disclosed Value $ 3,188,477
Costello Asset Management, INC reports 25.49% decrease in ownership of CEG / Constellation Energy Corporation

On April 30, 2026 - Costello Asset Management, INC filed a 13F-HR form disclosing ownership of 11,418 shares of Constellation Energy Corporation (MX:CEG) valued at $3,188,477 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 15,324 shares of Constellation Energy Corporation. This represents a change in shares of -25.49% during the quarter.

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)
2026-04-30 2026-03-31 13F CONSTELLATION ENERGY COM 21037T109 11,418 -3,906 -25.49 3,188 -41.10 1.1024
2026-02-03 2025-12-31 13F CONSTELLATION ENERGY COM 21037T109 15,324 -1,388 -8.31 5,414 -1.56 1.7903
2025-11-06 2025-09-30 13F CONSTELLATION ENERGY OM 21037T109 16,712 1,842 12.39 5,499 14.59 1.8415
2025-07-24 2025-06-30 13F CONSTELLATION ENERGY COM 21037T109 14,870 1,107 8.04 4,799 72.94 1.8031
2025-05-09 2025-03-31 13F CONSTELLATION ENERGY COM 21037T109 13,763 2,991 27.77 2,775 15.19 1.1258
2025-01-24 2024-12-31 13F CONSTELLATION ENERGY COR COM 21037T109 10,772 -35 -0.32 2,410 -14.27 1.5940
2024-11-01 2024-09-30 13F CONSTELLATION ENERGY COM 21037T109 10,807 -1,213 -10.09 2,810 16.74 1.8794
2024-08-01 2024-06-30 13F CONSTELLATION ENERGY COM 21037T109 12,020 -2,357 -16.39 2,407 -9.41 1.7945
2024-04-24 2024-03-31 13F CONSTELLATION ENERGY COM 21037T109 14,377 -685 -4.55 2,658 50.97 1.9012
2024-01-29 2023-12-31 13F CONSTELLATION ENERGY COM 21037T109 15,062 -2,475 -14.11 1,761 -7.95 1.4605
2023-11-08 2023-09-30 13F CONSTELLATION ENERGY COM 21037T109 17,537 -1,700 -8.84 1,913 8.57 1.7583
2023-07-28 2023-06-30 13F CONSTELLATION ENERGY COM 21037T109 19,237 -800 -3.99 1,761 12.02 1.5082
2023-05-05 2023-03-31 13F CONSTELLATION ENERGY COM 21037T109 20,037 -16,270 -44.81 1,573 -49.78 1.6190
2023-02-02 2022-12-31 13F CONSTELLATION ENERGY COM 21037T109 36,307 -1,595 -4.21 3,130 -0.73 2.8206
2022-11-03 2022-09-30 13F CONSTELLATION ENERGY COM 21037T109 37,902 16,905 80.51 3,153 162.31 2.9736
2022-07-22 2022-06-30 13F CONSTELLATION ENERGY COM 21037T109 20,997 20,012 2,031.68 1,202 2,085.45 1.0395
2022-04-26 2022-03-31 13F CONSTELLATION ENERGY COM 21037T109 985 985 55 0.0377
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.