Constellation Energy is nearing a $30 billion deal to acquire power producer Calpine, a Houston operator of gas-fired power plants, per multiple reports. Why it matters This would force a major messaging shift for Constellation,

Constellation is in talks to buy Calpine in a transaction that would value the power company at close to $30 billion, including debt, the people said. The deal is exp

Shares of Constellation Energy surged Thursday after the company announced a pair of contracts with the federal government.

The nuclear stocks today raise for more than 6% fueled by optimism following 10-year contract worth $840 million awarded by the U.S. GSA (General Services Administration) to Constellation Energy ( NASDAQ:CEG ). The contract puts Constellation in a good position for future growth as additional revenue projected.

Shares of Constellation Energy Corp. CEG slid 4.61% to $243.84 Wednesday, on what proved to be an all-around great trading session for the stock market, with the S&P 500 Index SPX rising 0.16% to 5,918.

Constellation Energy shares fell roughly 5% after reports it is in advanced talks to acquire closely held Calpine in a cash-and-stock deal. Shares in Constellation, the largest U.S. owner of nuclear-power plants,

S&P 500 nuclear stock Constellation Energy fell in afternoon trade on Wednesday after a report emerged that it's close to finalizing a deal for Calpine, a natural gas and geothermal power generator. Constellation Energy is in discussions with Calpine's private-equity owners about a deal that could value the company at about $30 billion including debt,