NYSE:CEG 17 January 2026 - 15 February 2026

Constellation Energy shares jumped 4.46% to $288.43 Friday after Capital International Investors disclosed a 5.5% passive stake in an SEC filing. Trading volume was heavy despite a quiet market session. U.S. markets close Monday for Presidents Day. Investors await updates on data-center power demand and PJM grid policy when trading resumes Tuesday.

Constellation Energy shares slipped 0.2% to $288.12 Wednesday as PJM Interconnection reported spot power prices above $1,000/MWh in parts of the Mid-Atlantic amid cold-driven grid strain. About 1.6 million shares traded. PJM cited nearly 21 GW of generation outages and warned of possible controlled outages. Constellation recently completed its Calpine acquisition and awaits an earnings report projected for Feb. 17.

Constellation Energy shares closed Friday up 0.6% at $288.95, rebounding after a 2.4% drop Thursday. PJM Interconnection expects a record winter power demand peak Jan. 27 as an Arctic front approaches. Traders are watching power prices and grid strain for impact on generator stocks. Constellation has lost about 15% since Jan. 15.

Constellation Energy shares rose 0.5% to $288.79 Friday after New York regulators extended subsidies for its upstate nuclear plants through 2049. Calpine, a Constellation unit, announced a $1 billion natural gas plant in West Virginia. Utilities sector shares slipped, with the Utilities Select Sector SPDR ETF down 0.7%. FERC approved new PJM capacity market rules this week.

Constellation Energy shares fell 2.4% to $287.35 Thursday, closing near session lows despite broader market gains. Wells Fargo cut its price target to $460 but kept an Overweight rating. The drop followed PJM’s emergency auction plan and new rules for large power users as a cold snap threatens peak demand. About 4.7 million shares traded hands.

Constellation Energy shares fell 1% to $291.29 in New York after state regulators extended nuclear subsidies through 2049. Traders weighed the move against proposed PJM price caps and federal actions affecting power market rules. The stock had swung as high as $302.48 earlier in the session. Wells Fargo lowered its price target for Constellation earlier in the week.

Constellation Energy shares fell 0.35% to $294.37 at Wednesday’s close, extending a 14% slide since January 15. The drop followed a Wells Fargo price-target cut and ongoing uncertainty over PJM power-market rules as data-center demand strains the grid. Constellation recently completed its $4.5 billion acquisition of Calpine.

Constellation Energy shares fell 9.8% to $307.71 in after-hours trading Friday after the White House urged PJM Interconnection to hold an emergency auction for new power plants and cap earnings for existing ones. The move follows an 800% surge in PJM capacity prices and criticism from state officials over rising power bills. GE Vernova rose 6.1%, while Vistra dropped 7.5%. U.S. markets are closed Monday for Martin Luther King Jr. Day.