The release of a stronger-than-expected December jobs report sent ripples through the stock market, causing significant sell-offs across major indexes. The Dow Jones Industrial Average plummeted by 1.6%, losing nearly 700 points, while the S&P 500 and Nasdaq both fell by 1.5% and 1.6%, respectively[1][2]. The unexpected job growth raised fears of persistent inflation, leading to a spike in the 10-year Treasury yield, which reached its highest level in over a year at 4.79% before settling at 4.76%[1]. Ellen Zentner, Chief Economic Strategist at Morgan Stanley Wealth Management, commented, "The surprisingly strong jobs report certainly isn't going to make the Fed less hawkish"[2].

In the midst of the market downturn, Constellation Energy announced a significant acquisition, agreeing to purchase independent power producer Calpine for $26.6 billion. This deal is set to create the largest clean energy company in the U.S., combining Constellation's nuclear power production with Calpine's natural gas and geothermal energy capabilities[2]. The acquisition is expected to provide Constellation with greater flexibility in meeting future energy demands, particularly as data centers continue to proliferate across the country. William Appicelli, an analyst at UBS Global Research, noted, "The addition of a large gas portfolio opens the door for CEG to be more flexible in meeting future large load demand"[2].

Amidst the broader market sell-off, Delta Air Lines managed to defy the trend with a strong performance following its fourth-quarter earnings report. The airline's stock surged by 9% after beating both top- and bottom-line estimates and issuing a positive outlook for the first quarter[2]. Delta's management expressed optimism about continued strong demand for travel, which contributed to the stock's upward momentum. This positive news also had a ripple effect on other airline stocks, with United Airlines and American Airlines experiencing gains as well[1].