What Changed
Price Move History
- Daily moves over 5%
- 25 252 sessions, November 11, 2025 to November 11, 2026
- Largest daily move
- +12.2% close of October 6, 2026
- 1-year change
- -21.9% closing prices, November 11, 2025 to November 11, 2026
- 1-month change
- -7.8% closing prices, October 9, 2026 to November 11, 2026
Company Description
Constellation Energy Corporation (Nasdaq: CEG) is a Fortune 200 utilities company in the other electric power generation industry. According to multiple company press releases, it is headquartered in Baltimore and describes itself as the nation’s largest producer of reliable, emissions-free energy and the largest nuclear energy company in the United States. The company also states that it is a leading competitive retail energy supplier serving businesses, homes and public sector customers across the United States, including a large share of Fortune 100 companies.
Constellation identifies as a producer of carbon-free and low-carbon power and a supplier of energy products and services. Constellation’s generating capacity includes nuclear, wind, solar, natural gas and hydroelectric assets. Company news further adds geothermal resources to this mix. Across these technologies, Constellation reports that its fleet has the generating capacity to power the equivalent of tens of millions of homes and that its output is predominantly carbon-free. In its own descriptions, the company highlights that its facilities provide about 10% of the nation’s clean energy.
Constellation sells electricity, natural gas and other energy-related products and sustainable solutions to distribution utilities, municipalities, cooperatives, and commercial, industrial, public sector and residential customers in markets across multiple geographic regions. Company news releases reinforce that Constellation is a competitive retail supplier serving more than 2.5 million homes, businesses and public sector customers nationwide, including three-fourths of the Fortune 100.
Constellation reports that it operates the nation’s largest nuclear fleet and emphasizes the role of nuclear generation in providing around-the-clock, carbon-free electricity. News about its Limerick, Clinton and Dresden Clean Energy Centers describes investments in digital modernization and state-of-the-art upgrades to enhance reliability, diagnostic capability, cyber resilience and safety at its nuclear facilities. The company also notes that its hydro, wind and solar facilities complement this nuclear base to support a clean energy mix.
In addition to nuclear, wind, solar and hydroelectric resources, Constellation’s own press releases describe significant natural gas and geothermal generation. Following its acquisition of Calpine Corporation, Constellation states that the combined portfolio includes 55 gigawatts of generating capacity from nuclear, natural gas, geothermal, hydro, wind and solar facilities. The company characterizes itself as the largest private-sector power producer in the world and the nation’s largest producer of clean and reliable energy, with a footprint that includes high-demand regions such as Texas and California and significant operations in Illinois, Maryland, New York and Pennsylvania.
Constellation’s operating segments and reporting units include Mid-Atlantic, Midwest, New York, ERCOT and Other Power Regions. These segments reflect the geographic and market diversity of its generation and energy supply activities. Company SEC filings, including Form 8-Ks, show that Constellation Energy Generation, LLC is a key operating subsidiary incorporated in Pennsylvania, and that the parent company, Constellation Energy Corporation, is also incorporated in Pennsylvania and listed on The Nasdaq Stock Market under the ticker CEG.
Constellation’s public communications emphasize investment in innovation and new technologies to support a reliable, sustainable and secure energy future. Examples from recent news include:
- A digital modernization project at the Limerick Clean Energy Center, replacing select analog instrumentation and control equipment with digital platforms designed to improve equipment monitoring, automation and operational flexibility.
- License renewals and upgrades at the Clinton and Dresden Clean Energy Centers in Illinois, with investments in new transformers, chillers, condensate polisher systems, feedwater level control technology and monitoring systems.
- A DOE-guaranteed loan facility intended to support the restart and repowering of the Christopher M. Crane Clean Energy Center, an 835 MW nuclear generating station in Pennsylvania.
Beyond generation and retail supply, Constellation also highlights specialized energy offerings. A company news release describes an agreement with W. L. Gore & Associates that incorporates hourly carbon-free energy matching into a clean energy supply arrangement, enabled by Constellation’s always-on nuclear fleet and complemented by solar offtake and renewable energy certificates. This illustrates how Constellation uses its generation portfolio to structure energy products that align with customers’ carbon reduction objectives.
Constellation’s acquisition of Calpine Corporation, as described in its news releases, is a significant corporate development. The company states that it completed the acquisition on January 7, 2026, creating what it describes as the nation’s largest producer of electricity. The combination brings together Constellation’s zero-emission nuclear fleet with Calpine’s natural gas and geothermal generation and a commercial platform serving approximately 2.5 million retail and business customers nationwide. The company notes that this transaction expands its presence in regions with high electricity demand and supports investments in new clean technologies, including advanced nuclear, geothermal, carbon capture and long-duration storage.
Constellation also points to its role in workforce development, community engagement and philanthropy. For example, its Energy to Educate grant program has provided millions of dollars in funding for STEM and energy-related projects, reaching hundreds of thousands of students since 2010. The company notes that it contributes more than $23 million each year in foundation, corporate and employee giving and supports local economies through jobs, refueling outages at nuclear plants and community partnerships.
From a regulatory and market standpoint, Constellation participates in organized power markets such as PJM. A Form 8-K dated December 17, 2025, reports that each of the company’s power plants located in the PJM market cleared in the PJM capacity auction for the 2027–2028 planning year, with cleared capacity volumes across zones such as COMED, EMAAC, MAAC, BGE and RTO. This filing also notes that capacity revenues for nuclear units are included in the gross receipts calculation for the federal Production Tax Credit.
Through its combination of large-scale nuclear, renewable and natural gas generation, competitive retail supply, and specialized clean energy products, Constellation positions itself—based on its own disclosures—as a major participant in the U.S. electric power sector with a focus on clean, reliable energy and long-term infrastructure investment.
Business model and segments
Constellation’s business model centers on owning and operating a diverse fleet of power generation assets and supplying energy and related products to a broad range of customers. Constellation has operating segments and reporting units in the Mid-Atlantic, Midwest, New York, ERCOT and Other Power Regions, reflecting the regional organization of its generation and supply activities.
The company’s own descriptions emphasize two major pillars:
- Generation – Large-scale nuclear, hydro, wind, solar, natural gas and geothermal facilities that produce electricity and, in some cases, support advanced clean energy technologies.
- Competitive retail and wholesale supply – Sales of electricity, natural gas and energy-related products to utilities, municipalities, cooperatives, commercial and industrial customers, public sector entities and residential customers.
Constellation’s public statements also reference specific project-level investments and financing arrangements, such as the DOE-guaranteed loan facility for the Christopher M. Crane Clean Energy Center and digital upgrades at nuclear plants, which illustrate how it finances and executes long-term asset modernization and expansion within this business model.
Constellation Energy Corporation stock (CEG)
Constellation Energy Corporation’s common stock trades on The Nasdaq Stock Market under the symbol CEG, as indicated in its Form 8-K filings. These filings show that Constellation is a Pennsylvania corporation with principal executive offices in Baltimore, Maryland. Investors in CEG stock gain exposure to a utilities-sector company that, according to its own disclosures, combines a large fleet of clean and low-carbon generation assets with a nationwide competitive energy supply business.
Constellation’s role in clean energy
Across its press releases, Constellation consistently describes itself as the nation’s largest producer of reliable, emissions-free energy and highlights that its annual output is nearly 90% carbon-free. It notes that its hydro, wind and solar facilities, paired with its nuclear fleet, have the generating capacity to power the equivalent of many millions of homes and provide about 10% of the nation’s clean energy. The company frames its investments in nuclear license renewals, digital modernization and new technologies as part of a broader effort to support energy security, economic growth and decarbonization.
Stock Performance
Constellation Energy (CEG) closed at $274.73 on November 11, 2026. Over the past 12 months, the price has lost 21.9%.
CEG Metrics & Rankings
Price returns through November 11, 2026. Month and year figures include the first trading day. Ranking links may use different dates.
Latest News
Constellation Energy has 10 recent news articles, with the latest published 3 days ago. Of the recent coverage, 5 articles coincided with positive price movement and 5 with negative movement. Key topics include earnings, dividends, management, acquisition. View all CEG news →
SEC Filings
Constellation Energy has filed 10 recent SEC filings, including 3 Form 4, 3 Form 144, 1 Form 10-Q, 1 Form 8-K. The most recent filing was submitted on . SEC filings provide transparency into a company's financial condition, material events, and regulatory compliance. View all CEG SEC filings →
Financial Highlights
Constellation Energy generated $25.5B in revenue in FY2025, operating income reached $3.1B (12.1% operating margin), and net income was $2.3B, reflecting a 9.1% net profit margin. Diluted earnings per share stood at $7.40. The company generated $4.2B in operating cash flow. The current ratio was 1.53, measuring current assets divided by current liabilities.
Upcoming Events
Record date
Dividend payment
Unit 1 restart
Crane restart
Crane plant return to service
Final investment decision
Illinois ZEC program ends
PPA commencement
First capacity upgrade
Peak+ agreement start
First 15-year PPA begins
Nuclear PPA start
Second 15-year PPA begins
Calvert Cliffs capacity online
Clinton license expiry
Dresden license expiry (unit 1)
Dresden license through 2049
NRC license renewal
Dresden license expiry (unit 2)
Dresden license through 2051
Constellation Energy has 20 upcoming scheduled events. The next event, "Record date", is scheduled for November 16, 2026 (in 4 days). 2 of them are financing or capital events, such as a dividend or a debt maturity. Investors can track these dates to stay informed about potential catalysts that may affect the CEG stock price.
Short Interest History
Short interest in Constellation Energy (CEG) currently stands at 10.5 million shares, down 11.8% from the previous reporting period, representing 3.1% of the float. Since November 2025, short interest has increased by 67.8%.
Days to Cover History
Days to cover for Constellation Energy (CEG) currently stands at 3.3 days, up 39.2% from the previous period. The ratio is the reported short interest divided by the average daily trading volume. Since November 2025, the figure has increased by 62.9%. Across the settlements charted above, it has ranged from 1.6 to 5.0 days.
CEG Company Profile & Sector Positioning
Constellation Energy (CEG) operates in the Utilities - Independent Power Producers industry within the broader Utilities sector and is listed on the NASDAQ. Among dividend-paying stocks, CEG ranks #1,861 by dividend yield.
Investors comparing CEG often look at related companies in the same sector, including Vistra Corp. (VST), NRG Energy, Inc. (NRG), Talen Energy Corporation (TLN), TransAlta Corporation (TAC), and The Southern Company (SO). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate CEG's relative position within its industry.