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Constellation Energy CEG

US equityMarket cap rank #170Nuclear Power
$262.34
−$1.54 (-0.58%)
Market open · Sep 24, 2:00 pm ET
After hours $263.50 -0.14%
Open$261.02
Prev close$263.88
Day range$258.50 – $263.83
Volume865.5K
Market cap$92.95B
P/E (TTM)25.6
Dividend yield0.62%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership82.5%+0.08 pts vs. prior quarter
Institutions holding2,172-8 vs. prior quarter
Insider trades (recent)11 buys / 0 sellsNet buying
Short interest3.27% of floatDays to cover 5.0 · as of 31 Aug 2026
Short-sale volume share19.1%5-day average of daily volume

Short-sale volume as % of daily volume

14%17%19%21%Aug '26Sep '26Sep '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$76.34M (3 inflow days, 17 outflow days).

Largest holders

  • BlackRock6.93%
  • Capital Research6.58%
  • Vanguard Capital Management, LLC6.45%
  • State Street Global Advisors5.48%
  • Vanguard Portfolio Management, LLC4.47%

By investor type

  • Mutual Fund62.28%
  • Public Company5.80%
  • VC/PE Fund4.43%
  • Government Pension Fund3.73%
  • Hedge Fund2.88%
  • Private Company1.39%
  • Sovereign Wealth Fund1.28%
  • Family Office/Trust0.26%
Institutional holders2,172
Institutional ownership82.5%

Insider activity

Total transactions23
Bought11
Sold0

Short interest

Report dateShares short% of floatDays to cover
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
15 Jul 2026 10,654,877 2.9% 3.0
30 Jun 2026 12,153,531 3.4% 3.2
15 Jun 2026 11,380,943 3.2% 2.3
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