Constellation Energy Corporation
MX ˙ BMV ˙ US21037T1097
SecurityMX:CEG / Constellation Energy Corporation
InstitutionJefferies Financial Group Inc.
Latest Disclosed Ownership45,090 shares
Latest Disclosed Value $ 12,591,382
Jefferies Financial Group Inc. ownership in CEG / Constellation Energy Corporation

On May 7, 2026 - Jefferies Financial Group Inc. filed a 13F-HR form disclosing ownership of 45,090 shares of Constellation Energy Corporation (MX:CEG) valued at $12,591,382 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 11,142 shares of Constellation Energy Corporation. This represents a change in shares of 304.68% during the quarter.

Jefferies Financial Group Inc. has a history of taking positions in derivatives of the underlying security (CEG) in the form of stock options. The firm currently holds call options representing 1,100 of underlying shares valued at $307,175 USD and put options representing 3,500 of underlying shares valued at $977,375 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:CEG / Constellation Energy Corporation Historical Put/Call Ratio
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)
2026-05-07 2026-03-31 13F CONSTELLATION ENERGY COM 21037T109 45,090 33,948 304.68 12,591 219.89 0.0862
2026-02-09 2025-12-31 13F CONSTELLATION ENERGY COM 21037T109 11,142 11,142 3,936 0.0201
2025-08-12 2025-06-30 13F CONSTELLATION ENERGY COM 21037T109 0 -28,980 -100.00 0 -100.00
2025-05-08 2025-03-31 13F CONSTELLATION ENERGY COM 21037T109 28,980 27,928 2,654.75 5,843 2,386.38 0.0516
2025-02-27 2024-12-31 13F/A-1 CONSTELLATION ENERGY COM 21037T109 1,052 -5,523 -84.00 235 -86.25 0.0014
2025-02-14 2024-12-31 13F CONSTELLATION ENERGY COM 21037T109 1,052 -5,523 235 0.0014
2024-11-14 2024-09-30 13F CONSTELLATION ENERGY COM 21037T109 6,575 -17,425 -72.60 1,710 -64.44 0.0122
2024-08-13 2024-06-30 13F CONSTELLATION ENERGY COM 21037T109 24,000 23,950 47,900.00 4,806 53,300.00 0.0511
2024-05-13 2024-03-31 13F CONSTELLATION ENERGY COM 21037T109 50 -3,695 -98.66 9 -97.94 0.0001
2024-05-06 2023-12-31 13F/A-1 CONSTELLATION ENERGY COM 21037T109 3,745 -126 -3.25 438 3.55 0.0029
2024-02-14 2023-12-31 13F CONSTELLATION ENERGY COM 21037T109 3,745 -126 438 0.0029
2023-11-14 2023-09-30 13F CONSTELLATION ENERGY COM 21037T109 3,871 3,871 422 0.0038
2023-05-15 2023-03-31 13F CONSTELLATION ENERGY COM 21037T109 0 -5,430 -100.00 0 -100.00
2023-09-21 2022-12-31 13F/A-1 CONSTELLATION ENERGY COM 21037T109 5,430 5,430 468 0.0032
2023-02-14 2022-12-31 13F CONSTELLATION ENERGY COM 21037T109 22,150 22,150 415 0.0029
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-07 2026-03-31 13F CONSTELLATION ENERGY COM Call 1,100 -97.01 307 -97.64 n/a n/a n/a
2026-02-09 2025-12-31 13F CONSTELLATION ENERGY COM Call 36,800 1,372.00 13,000 1,481.51 n/a n/a n/a
2025-11-13 2025-09-30 13F CONSTELLATION ENERGY COM Call 2,500 823 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-07 2026-03-31 13F CONSTELLATION ENERGY COM Put 3,500 -78.12 977 -82.71 n/a n/a n/a
2026-02-09 2025-12-31 13F CONSTELLATION ENERGY COM Put 16,000 566.67 5,652 616.35 n/a n/a n/a
2025-11-13 2025-09-30 13F CONSTELLATION ENERGY COM Put 2,400 790 n/a n/a n/a
2024-08-13 2024-06-30 13F CONSTELLATION ENERGY COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-13 2024-03-31 13F CONSTELLATION ENERGY COM Put 22,400 4,141 n/a n/a n/a
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.