Constellation Energy Corporation
US ˙ NasdaqGS ˙ US21037T1097

SecurityCEG / Constellation Energy Corporation
InstitutionSei Investments Co
Latest Disclosed Ownership126,242 shares
Latest Disclosed Value $ 44,599,127
Sei Investments Co reports 1.39% decrease in ownership of CEG / Constellation Energy Corporation

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 126,242 shares of Constellation Energy Corporation (US:CEG) valued at $44,597,511 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 128,023 shares of Constellation Energy Corporation. This represents a change in shares of -1.39% during the quarter. The current value of the position is $33,402,371 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)
2026-02-13 2025-12-31 13F CONSTELLATION ENERGY COM 21037T109 126,242 -1,781 -1.39 44,599 5.85 0.0440
2025-11-13 2025-09-30 13F CONSTELLATION ENERGY COM 21037T109 128,023 516 0.40 42,135 2.38 0.0453
2025-08-14 2025-06-30 13F CONSTELLATION ENERGY COM 21037T109 127,507 54,794 75.36 41,154 180.80 0.0477
2025-05-14 2025-03-31 13F/A-1 CONSTELLATION ENERGY COM 21037T109 72,713 7,546 11.58 14,656 0.54 0.0189
2025-05-13 2025-03-31 13F CONSTELLATION ENERGY COM 21037T109 66,455 1,288 14,381 0.0156
2025-02-11 2024-12-31 13F CONSTELLATION ENERGY COM 21037T109 65,167 -8,915 -12.03 14,578 -24.32 0.0187
2024-11-12 2024-09-30 13F CONSTELLATION ENERGY COM 21037T109 74,082 8,972 13.78 19,262 47.78 0.0250
2024-08-13 2024-06-30 13F CONSTELLATION ENERGY COM 21037T109 65,110 11,313 21.03 13,035 31.09 0.0185
2024-05-07 2024-03-31 13F CONSTELLATION ENERGY COM 21037T109 53,797 466 0.87 9,944 59.52 0.0146
2024-02-14 2023-12-31 13F CONSTELLATION ENERGY COM 21037T109 53,331 -25,481 -32.33 6,234 -27.49 0.0100
2023-11-14 2023-09-30 13F CONSTELLATION ENERGY COM 21037T109 78,812 -53,821 -40.58 8,597 -29.20 0.0154
2023-08-11 2023-06-30 13F CONSTELLATION ENERGY COM 21037T109 132,633 21,368 19.20 12,142 39.02 0.0212
2023-05-12 2023-03-31 13F CONSTELLATION ENERGY COM 21037T109 111,265 38,407 52.71 8,735 39.05 0.0162
2023-02-10 2022-12-31 13F CONSTELLATION ENERGY COM 21037T109 72,858 45,225 163.66 6,281 173.21 0.0140
2022-11-14 2022-09-30 13F CONSTELLATION ENERGY COM 21037T109 27,633 -5,091 -15.56 2,299 23.14 0.0051
2022-08-15 2022-06-30 13F CONSTELLATION ENERGY COM 21037T109 32,724 28,965 770.55 1,867 780.66 0.0040
2022-05-13 2022-03-31 13F CONSTELLATION ENERGY COM 21037T109 3,759 3,759 212 0.0004
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.