Constellation Energy rises after Google signs long-term nuclear power pact

What happened

Constellation Energy (CEG) rose 12.2% on October 6, 2026, after reports said Google signed a 20-year power-purchase agreement to buy 890 megawatts, funding about $4.3 billion of reactor upgrades. The pact, and a collaboration to use Google Cloud tools for operational efficiency, was reported by Barrons and Yahoo Finance. The stock opened 8.8% above the previous close and closed at $300.40, with trading volume 4.3 times its 20-day average. The S&P 500 rose 0.6% on the day and the utilities sector median rose 1.1%.

How big was the move

The stock’s 12.2% rise was 4.5 times a typical daily move for this stock and 11.1 percentage points better than the sector median on the day. Constellation’s trading volume was 4.3 times its 20-day average, signaling heavy investor interest. Over the last five sessions the stock rose 13.5%, while the S&P 500 over five sessions rose 1.9%. In the past five years the stock had 6 sessions with a gain of at least 12.2%; twenty trading days later the median result was a gain of 12.5%, and 6 of 6 were higher. Taken together, the price and volume point to a large, mostly company-specific move that followed the reports of the Google deal.

The technical picture

The stock was 12.4% above its 20-day moving average, 10.5% above its 50-day moving average and 4.6% above its 200-day moving average, showing short-term strength. The 50-day average is below the 200-day average, a sign of a weak longer-term trend, and the stock remains 27.2% below the 52-week high. The Relative Strength Index (14 days) stood at 67, which is between 30 and 70, a neutral range. One-month change was a rise of 0.5% and three-month change was a rise of 22.9%, while the one-year change showed a fall of 16.6%, leaving the stock 33.0 percentage points behind the S&P 500 over one year. Volatility was 44% annualized over 60 days, lower than 55% of its own readings over five years, suggesting recent moves have been steadier than some stretches in the past.

Fundamentals and valuation

For the four quarters through June 30, 2026, revenue was $31.27 billion, which grew 26.0% from a year earlier and improved from revenue growth of 23.4% one quarter earlier. Diluted earnings per share were $10.29, and earnings per share growth from a year earlier rose 7.4%. Gross margin was 94.9% (a year earlier: 20.7%), while operating margin was 14.7% (a year earlier: 15.5%). Free-cash-flow margin was 1.0% and return on invested capital was 3.4%. The balance sheet showed net debt of 2.8 times EBITDA, and share count over one year increased by 12.7%.

Investors assessing valuation faced mixed signals. The stock traded at 29.2 times trailing earnings and 24.9 times expected earnings, with a free-cash-flow yield of 0.3%. Its price to trailing earnings was higher than 60% of its own readings over the past five years (five-year median: 28.8 times earnings). PromtFinance scores ranked Growth 91 (Exceptional) and Revisions 80 (Strong), while Value was 26 (Very weak) and Stability 20 (Very weak), reflecting rapid top-line growth but limited cash conversion and a leveraged balance sheet.

Earnings and analyst expectations

The company’s last report came on August 6, 2026, when earnings per share were $2.55 against $2.29 expected, 11.4% above estimates. That marked three consecutive quarters beating estimates, with an average surprise over the last four reports of 4.3% above estimates. The typical two-day reaction after recent reports was the stock rose 0.7%. The next scheduled report is on November 9, 2026.

Analysts provide a consensus rating of Buy based on 21 analysts, with 71% rating the stock Buy. The consensus price target is $352.33, which is 17.3% above the closing price on October 6, 2026. Market value stood at $92.47 billion, a scale that makes Constellation a significant player among Independent Power Producers.

What to watch

• November 9, 2026: next quarterly earnings report date.
• The implementation details and regulatory approvals tied to the 20-year power-purchase agreement for 890 megawatts, as reported by Barrons and Yahoo Finance.
• The timeline and spending related to the about $4.3 billion of upgrades across 11 reactors in Illinois, Pennsylvania and New Jersey.
• Changes to operational collaboration using Google Cloud tools and any subsequent updates on expected cost or efficiency gains.
• Any revisions to guidance, analyst estimates or PromtFinance scores following the deal announcement.