Constellation Energy CEG
$249.95 +$10.30 (+4.30%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $250.20 +0.10%
Open$246.05
Prev close$239.65
Day range$243.38 – $252.72
Volume5.57M
Market cap$88.56B
P/E (TTM)24.4
Dividend yield0.65%
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership82.6%-0.02 pts vs. prior quarter
Institutions holding2,224+38 vs. prior quarter
Insider trades (recent)41 buys / 8 sellsNet buying
Short interest3.36% of floatDays to cover 2.4 · as of 15 Oct 2026
Short-sale volume share11.0%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: +$4.82M (10 inflow days, 10 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 29.9% of shares outstanding.
Largest holders
By investor type
Reported short interest has risen from 2.89% to 3.36% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Capital Research | Mutual Fund | 2026/Q3 | +2,488,515 | 6.6% |
| Teacher Retirement System of Texas | Government Pension Fund | 2026/Q3 | +1,364,652 | 0.4% |
| BlackRock | Mutual Fund | 2026/Q3 | +1,046,771 | 6.9% |
| Vanguard Capital Management, LLC | Mutual Fund | 2026/Q3 | +949,088 | 6.4% |
| UBS Asset Management | Mutual Fund | 2026/Q3 | +941,527 | 1.3% |
| Victory Capital Management Inc. | Mutual Fund | 2026/Q3 | +900,066 | 0.9% |
| Vanguard Portfolio Management, LLC | Mutual Fund | 2026/Q3 | +817,946 | 4.5% |
| Amundi Asset Management | Mutual Fund | 2026/Q3 | +674,690 | 0.6% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +615,248 | 5.5% |
| Foxhaven Asset Management, LP | Hedge Fund | 2026/Q3 | +556,719 | 0.2% |
| Neuberger Berman Investment Advisers LLC | Mutual Fund | 2026/Q3 | +422,439 | 0.4% |
| Migdal Mutual Funds Ltd. | Mutual Fund | 2026/Q3 | +324,994 | 0.1% |
| The Goldman Sachs Group, Inc. | Public Company | 2026/Q3 | +297,353 | 0.5% |
| California Public Employees' Retirement System | Government Pension Fund | 2026/Q3 | +295,560 | 0.2% |
| Morgan Stanley | Public Company | 2026/Q3 | +267,315 | 1.9% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 29 Sep 2026 | Roger Crandall | Independent Director | Other Derivative Acquisition | +82 | – | 82 |
| 29 Sep 2026 | Charles Harrington | Lead Independent Director | Other Derivative Acquisition | +188 | – | 5,542 |
| 10 Aug 2026 | Roger Crandall | Independent Director | Open Market Acquisition | +1,500 | $278.62 | 1,693 |
| 3 Aug 2026 | Roger Crandall | Independent Director | Other Acquisition | +462 | $267.25 | 462 |
| 3 Aug 2026 | Roger Crandall | Independent Director | Initial Statement of Beneficial | +0 | – | 193 |
| 29 Jun 2026 | Charles Harrington | Lead Independent Director | Other Derivative Acquisition | +146 | – | 5,345 |
| 27 Apr 2026 | Robert Lawless | Former Independent Chairperson | Other Acquisition | +556 | $305.71 | 51,340 |
| 27 Apr 2026 | Yves de Balmann | Independent Director | Other Acquisition | +556 | $305.71 | 51,340 |
| 27 Apr 2026 | Charles Harrington | Lead Independent Director | Other Acquisition | +556 | $305.71 | 1,549 |
| 27 Apr 2026 | Bradley Halverson | Independent Director | Other Acquisition | +556 | $305.71 | 6,257 |
| 27 Apr 2026 | Eileen Paterson | Independent Director | Other Acquisition | +556 | $305.71 | 1,555 |
| 27 Apr 2026 | Julie Holzrichter | Independent Director | Other Acquisition | +556 | $305.71 | 6,257 |
| 27 Apr 2026 | Dhiaa Jamil | Independent Director | Other Acquisition | +556 | $305.71 | 1,549 |
| 27 Apr 2026 | Ashish Khandpur | Independent Director | Other Acquisition | +556 | $305.71 | 6,257 |
| 27 Apr 2026 | Nneka Rimmer | Independent Director | Other Acquisition | +556 | $305.71 | 4,475 |
| 27 Apr 2026 | John Richardson | Independent Director | Other Acquisition | +556 | $305.71 | 16,399 |
| 30 Mar 2026 | Charles Harrington | Lead Independent Director | Other Derivative Acquisition | +130 | – | 5,191 |
| 28 Feb 2026 | Michael Koehler | Executive VP & Chief Administration Officer | Derivative Exercise and Sale | -29,782 | $329.88 | 53,289 |
| 28 Feb 2026 | Michael Koehler | Executive VP & Chief Administration Officer | Other Derivative Acquisition | +8,004 | – | 6,063 |
| 28 Feb 2026 | Michael Koehler | Executive VP & Chief Administration Officer | Derivative Exercise and Retained | +14,273 | – | 53,289 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 11,892,121 | 3.4% | 2.4 |
| 30 Sep 2026 | 11,837,140 | 3.3% | 3.9 |
| 15 Sep 2026 | 11,740,256 | 3.3% | 4.2 |
| 31 Aug 2026 | 11,572,494 | 3.3% | 5.0 |
| 14 Aug 2026 | 9,408,275 | 2.7% | 3.3 |
| 31 Jul 2026 | 10,429,475 | 2.9% | 3.9 |
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