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NASDAQ:CEG 13 December 2025 - 28 June 2026

Constellation Energy (NASDAQ:CEG) closes week close to 52-week low, as nuclear renewal initiative continues

Constellation Energy (NASDAQ:CEG) closes week close to 52-week low, as nuclear renewal initiative continues

Constellation Energy Corporation heads into the next U.S. trading week with shares lingering near a 52-week low. That’s despite two recent signals that buyers and regulators could extend the life and coverage of its nuclear fleet. No regular Nasdaq trading session was held on Saturday. Nasdaq’s posted hours for U.S. equities are 9:30 a.m. to 4 p.m. ET, Monday to Friday. The exchange also notes July 3 as closed for Independence Day observed. Constellation Energy last finished regular trading at $264.02 on Friday.
28 June 2026
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Constellation Energy Stock Rebounds as AI Power Demand Meets a June Share-Supply Test

Constellation Energy Stock Rebounds as AI Power Demand Meets a June Share-Supply Test

Constellation Energy Corporation’s stock ended Friday at $253.76, up 2.86%, giving the Nasdaq-listed power producer a second straight daily gain and a stronger move than the broader market. The rally matters because CEG has been trying to stabilize after a sharp pullback: even after Friday’s advance, the stock was still 38.51% below its 52-week high of $412.70, according to MarketWatch. The S&P 500 rose 0.50% and the Dow Jones Industrial Average gained 0.70% in the same session. The latest company news supports the bull case that Constellation is still investing behind reliable, around-the-clock power supply. On June 9, the company said its Limerick Clean Energy Center completed a refueling and maintenance outage that included $90 million of investment, cooling-tower performance upgrades and generator component replacements designed to position the unit for the next 24 months. Limerick site vice president Marty Bonifanti said the outage work would allow Unit 1 to “continue to deliver dependable, emissions-free electricity for decades to come.”
13 June 2026
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Constellation Energy Stock Slipped for the Week — One AI Power Trigger Could Decide What Comes Next

Constellation Energy Stock Slipped for the Week — One AI Power Trigger Could Decide What Comes Next

Constellation Energy shares enter next week on the back foot after a Friday bounce failed to repair a midweek break. CEG closed at $287.75 on May 29, up 0.50% on the day, but down about 2.1% from the May 22 close of $294.07; Wednesday’s 4.27% drop was the week’s hard turn. There is no Saturday cash-session trade to change that picture. The Nasdaq market runs Monday through Friday from 9:30 a.m. to 4 p.m. Eastern time, and U.S. markets were closed on Monday, May 25, for Memorial Day, leaving last week holiday-shortened.
30 May 2026
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Constellation Energy Stock: AI Power Demand Faces a Crucial May Test After Shareholder Vote

Constellation Energy Stock: AI Power Demand Faces a Crucial May Test After Shareholder Vote

Shareholders at Constellation Energy signed off on all 11 board nominees and approved executive compensation, while overwhelmingly turning down a call for a report detailing the company’s rationale behind its diversity, equity and inclusion efforts, according to a Friday filing. The outcome hands management a solid governance win ahead of next week’s first-quarter earnings update. Timing is key here, as Constellation now stands in for one of the power sector’s central debates: just how much non-stop energy will AI data centers actually require, and how fast can power suppliers nail down those deals? Nasdaq wrapped up for the weekend with CEG finishing at $307.81, roughly 1.7% lower, according to the latest numbers.
3 May 2026
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Constellation Energy stock slides after Wells Fargo trims target as PJM data-center plan looms

Constellation Energy stock slides after Wells Fargo trims target as PJM data-center plan looms

New York, Jan 20, 2026, 19:58 EST — Trading after hours. Shares of Constellation Energy Corporation slipped about 4% to $295.40 in after-hours trading Tuesday. The drop followed a Wells Fargo analyst cutting his price target from $478 to $460. Shahriar Pourreza kept an Overweight rating, describing the stock as “catalyst rich” and his “Best IPP Idea” — shorthand for independent power producers. During the regular session, CEG shares ranged between $292.49 and $308.75.
21 January 2026
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NuScale Power stock jumps as Washington’s AI power plan puts new reactors back in play

NuScale Power stock jumps as Washington’s AI power plan puts new reactors back in play

New York, January 16, 2026, 12:36 PM EST — Regular session NuScale Power Corp shares rose about 6% on Friday, clawing back ground after a volatile start to the year as investors re-priced nuclear-linked names against fresh policy signals on how the U.S. will fund new power supply for data centers.
16 January 2026
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Constellation Energy (CEG) Stock After Hours on Dec. 24, 2025: What Happened After the Bell—and What to Watch Before the Next Market Open

Constellation Energy (CEG) Stock After Hours on Dec. 24, 2025: What Happened After the Bell—and What to Watch Before the Next Market Open

Constellation Energy Corporation ended the holiday-shortened Christmas Eve session higher, then traded slightly softer in extended hours as U.S. markets headed into the Christmas Day closure. With liquidity thin and headlines still shaping the “AI power demand” narrative in U.S. electricity markets, investors are heading into the next trading session with a familiar checklist: power-market pricing, data-center demand, nuclear operating leverage, and deal execution. StockAnalysis In the regular session that ended early, Constellation Energy stock:
25 December 2025
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Constellation Energy (CEG) Stock Today — Dec. 19, 2025: Latest News, Analyst Forecasts, and What Wall Street Is Watching Next

Constellation Energy (CEG) Stock Today — Dec. 19, 2025: Latest News, Analyst Forecasts, and What Wall Street Is Watching Next

Constellation Energy is ending the week in the spotlight — and not just because of another volatile trading session. After a sharp surge on Thursday, CEG cooled modestly on Friday as investors weighed a fast-moving mix of catalysts: nuclear license extensions in Illinois, the final regulatory clearance for the $16.4 billion Calpine acquisition, and the broader AI data-center power boom that’s reshaping utility and power-market economics. Reuters+3StockAnalysis+3Reuters+3 By mid-afternoon on Dec. 19, CEG traded around $357–$358, down about 1% from Thursday’s close near $361.05. In Friday’s session, the stock moved through a wide intraday range — a reminder that Constellation has become one of the market’s most headline-sensitive “AI power” plays. AAII+2StockAnalysis+2
19 December 2025
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Constellation Energy (CEG) Stock After the Bell on Dec. 18, 2025: PJM Capacity Shock, FERC’s AI Data-Center Order, and What to Watch Before Friday’s Open

Constellation Energy (CEG) Stock After the Bell on Dec. 18, 2025: PJM Capacity Shock, FERC’s AI Data-Center Order, and What to Watch Before Friday’s Open

Constellation Energy Corporation closed Thursday’s session sharply higher and held steady in after-hours trading—capping a volatile stretch for one of the market’s most closely watched “AI power” and nuclear-linked names. By the close, investors were weighing three fast-moving catalysts that can influence CEG at Friday’s open: record-high PJM capacity auction prices tied to data-center demand, a late-day Federal Energy Regulatory Commission order directing PJM to create clearer rules for “colocated” AI/data-center connections, and a meaningful procedural step in the antitrust review of Constellation’s planned acquisition of Calpine, including required divestitures. Reuters+2Reuters+2
19 December 2025
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Constellation Energy (CEG) Stock Drops on AI Power-Demand Jitters as PJM Auction Hits Record and Calpine Deal Advances (Dec. 18, 2025)

Constellation Energy (CEG) Stock Drops on AI Power-Demand Jitters as PJM Auction Hits Record and Calpine Deal Advances (Dec. 18, 2025)

Dec. 18, 2025 — Constellation Energy Corporation is back in the spotlight after a sharp pullback that hit many “AI power” and nuclear-linked names at once. CEG was recently trading around $340.97, down about 6.8% versus the prior close. MarketBeat The move comes even as the fundamental newsflow around Constellation has been broadly constructive: a record-setting PJM capacity auction that underscored tightening power supply, fresh federal license renewals for major Illinois nuclear plants, and another step forward in Constellation’s Calpine acquisition process—highlighted today by a Federal Register notice detailing the Justice Department’s proposed settlement and divestiture requirements. PJM+2Constellation+2
18 December 2025
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Constellation Energy (CEG) Stock After Hours Today (Dec. 17, 2025): Why Shares Fell and What to Watch Before Thursday’s Open

Constellation Energy (CEG) Stock After Hours Today (Dec. 17, 2025): Why Shares Fell and What to Watch Before Thursday’s Open

Constellation Energy Corporation ended Wednesday, December 17, 2025 with a sharp selloff during regular trading—then bounced in after-hours action as late-breaking grid-market headlines hit the tape. CEG closed the session at $340.97, down 6.74%, after trading between $372.00 and $334.18 on volume of roughly 4.57 million shares. StockAnalysisIn after-hours trading, CEG was quoted around $348.58 as of 6:13 p.m. ET. StockAnalysis
18 December 2025
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Constellation Energy (CEG) Stock News Today: NRC Extends Key Nuclear Licenses, Calpine Deal Nears Closing, and Analysts Refresh Price Targets (Dec. 17, 2025)

Constellation Energy (CEG) Stock News Today: NRC Extends Key Nuclear Licenses, Calpine Deal Nears Closing, and Analysts Refresh Price Targets (Dec. 17, 2025)

Constellation Energy Corporation stock is in the spotlight on December 17, 2025, as investors weigh two major fundamentals-driven updates—fresh 20-year nuclear license renewals in Illinois and continued progress toward the company’s proposed acquisition of Calpine—against a sharp, risk-off rotation hitting the broader “AI power trade.” Below is a full roundup of the most important Constellation Energy stock news, forecasts, and market analysis driving CEG today.
17 December 2025
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Constellation Energy (CEG) Stock Today: Calpine Deal Nears Close as Nuclear Data‑Center Contracts Shape 2026 Outlook (Dec. 15, 2025)

Constellation Energy (CEG) Stock Today: Calpine Deal Nears Close as Nuclear Data‑Center Contracts Shape 2026 Outlook (Dec. 15, 2025)

Constellation Energy Corporation is back in focus on December 15, 2025 as investors digest a busy stretch of deal news, federal support for nuclear restarts, and continued momentum behind “24/7 carbon‑free” power contracts tied to the AI data‑center buildout. Shares traded around $356.99 in Monday’s session, with an intraday range of roughly $350.87 to $360.96, according to market data.
15 December 2025
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Constellation Energy (CEG) Stock: What to Know Before the U.S. Market Opens on Dec. 15, 2025

Constellation Energy (CEG) Stock: What to Know Before the U.S. Market Opens on Dec. 15, 2025

Constellation Energy Corporation heads into Monday’s session with two powerful narratives colliding: a “nuclear renaissance” story tied to AI-era power demand, and a high-stakes acquisition that could reshape the U.S. generation landscape—along with the regulatory strings attached. By Friday’s close, CEG had just delivered a reminder that even market darlings can swing hard: shares finished at $351.98, after trading as high as $380.10 and as low as $351.31 in a volatile session.
14 December 2025
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Constellation Energy (CEG) Stock This Week: Calpine Deal Nears Closing, Nuclear “Data Economy” Tailwinds, and What Investors Watch Next Week (Updated Dec. 12, 2025)

Constellation Energy (CEG) Stock This Week: Calpine Deal Nears Closing, Nuclear “Data Economy” Tailwinds, and What Investors Watch Next Week (Updated Dec. 12, 2025)

Updated: December 12, 2025Company / Ticker: Constellation Energy Corporation Constellation Energy ended the week on a dramatic note, sliding to $351.98 at Friday’s close after a sharp intraday reversal that took the stock from an early surge to a steep selloff. CEG opened at $379.00, traded as high as $380.78, then dropped to $351.22 before closing down 7.03% on the day, with volume around 3.78 million shares. Investing.com
13 December 2025
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Constellation Energy (CEG) Stock: Calpine Deal Milestones, Nuclear Restart Momentum, and What to Watch Next Week (Updated Dec. 13, 2025)

Constellation Energy (CEG) Stock: Calpine Deal Milestones, Nuclear Restart Momentum, and What to Watch Next Week (Updated Dec. 13, 2025)

Constellation Energy Corporation wrapped up a volatile week in U.S. markets with a sharp Friday pullback—yet the bigger story remains the same: investors are trying to price a nuclear-heavy power producer at the center of two giant forces colliding at speed—AI-driven electricity demand and a regulatory/financing chess match around Constellation’s planned Calpine acquisition. Reuters Because today is Saturday, December 13, 2025, U.S. equity markets are closed. The most recent official close to reference is Friday, December 12.
13 December 2025
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Stock Market Today

  • FTSE 100 slips as homebuilders weigh, oil rises
    June 29, 2026, 1:28 PM EDT. The FTSE 100 ended Monday down 0.2% at 10,484.22 as housebuilders and Babcock International slid after the Bank of England reported weak UK mortgage approvals. Brent crude climbed to $72.85 a barrel after fresh US-Iran tensions. Sterling firmed, with Andy Burnham's leadership pitch stressing fiscal discipline, which seemed to calm worries over UK borrowing. European shares edged a bit lower. In contrast, US stocks rose, the S&P 500 up 0.6%. UK mortgage borrowing for May tumbled to £2.9 billion, the lowest in almost two years. US Treasury yields nudged higher. Markets are watching for progress on the oil ceasefire and for news on cabinet jobs in the UK.
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