Constellation Energy Corporation
Constellation Energy Corporation (CEG) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CEG · as of Sep 30, 2025
Ownership Breakdown
1,907
Institutional Holders
▲ 103 vs Q2
$82.01B
Total Inst. Value
▼ $644.05M vs Q2
361.19M
Shares Outstanding
freeFloat 93.58%
249.24M
13F Shares Held
▼ 7.02M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
CEG largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC electric services | 38.42M | 12.24% | 12.24% | $12.64T | Nov 7, 2025 | ▲ 18.2K |
CAPITAL INTERNATIONAL INVESTORS electric services | 26.11M | 8.32% | 8.32% | $8.60T | Nov 13, 2025 | ▼ 2.06M |
BLACKROCK, INC. electric services | 22.56M | 7.19% | 7.19% | $7.42T | Nov 12, 2025 | ▲ 171.1K |
STATE STREET CORP electric services | 18.19M | 5.79% | 5.79% | $5.99T | Nov 14, 2025 | ▲ 57.0K |
FMR LLC electric services | 13.25M | 4.22% | 4.22% | $4.36T | Nov 13, 2025 | ▼ 966.7K |
MORGAN STANLEY electric services | 8.02M | 2.55% | 2.55% | $2.64T | May 27, 2026 | ▼ 78.4K |
GEODE CAPITAL MANAGEMENT, LLC electric services | 7.04M | 2.24% | 2.24% | $2.31T | Nov 12, 2025 | ▲ 77.5K |
JENNISON ASSOCIATES LLC electric services | 5.92M | 1.88% | 1.88% | $1.95T | Oct 30, 2025 | ▼ 41.0K |
COATUE MANAGEMENT LLC electric services | 5.73M | 1.82% | 1.82% | $1.88T | Nov 14, 2025 | ▼ 198.3K |
PRICE T ROWE ASSOCIATES INC /MD/ electric services | 4.13M | 1.32% | 1.32% | $1.36T | Nov 14, 2025 | ▼ 1.75M |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
28
Increased
+5.26M shares0
New Positions
first time holders22
Decreased
−7.22M shares0
Sold Out
fully exitedNet shares change (top 50)
1.96M
+5.26M / −7.22M
Net new holders
+6
0 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CEG insider trading · insider activity
Source: SEC Form 4
10
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Rimmer Nneka Louise director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 4.5K | Form 4 ↗ |
Richardson John M director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 16.4K | Form 4 ↗ |
Paterson Eileen P. director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 1.6K | Form 4 ↗ |
LAWLESS ROBERT J director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 51.3K | Form 4 ↗ |
Ashish Khandpur K director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 6.3K | Form 4 ↗ |
Jamil Dhiaa M. director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 1.7K | Form 4 ↗ |
Holzrichter Julie director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 6.3K | Form 4 ↗ |
Harrington Charles L. director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 1.6K | Form 4 ↗ |
Halverson Bradley M director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 6.3K | Form 4 ↗ |
DE BALMANN YVES C director | Apr 28, 2026 | Award | 556 | $305.71 | $170.0K | 51.3K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Constellation Energy Corporation (CEG) is primarily owned by institutional investors, who hold approximately 69.0% of total shares outstanding. Company insiders own approximately 6.42%, while retail and public investors account for the remaining 24.58%.
The largest institutional shareholder of Constellation Energy Corporation is VANGUARD GROUP INC, holding approximately 38.42 million shares — equal to 12.24% of outstanding shares — as of September 30, 2025.
A total of 1,907 institutional investors currently hold CEG stock, with a combined institutional value of approximately $82.01 billion as of the most recent 13F filing period.
Frequently asked questions
CEG ownershipConstellation Energy Corporation (CEG) is primarily owned by institutional investors, who hold approximately 69.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 12.24% stake. Company insiders hold 6.42%. Data sourced from SEC Form 13F as of September 30, 2025.