The SPDR S&P 500 ETFSPY was down 0.1% after the market open. Nvidia, Tesla Climb; Kellogg Soars On Buyout Deal.

As chief executive of Elon Musk's X, Linda Yaccarino navigated two turbulent years of charm offensives and legal threats to stabilize a bruised business-just in time for Musk's merger of X with xAI.

Wall Street looked to keep momentum from a tech-fueled rally that saw Nvidia leap to become the world's first $4 trillion ...

Wall Street looked to keep momentum from a tech-fueled rally that saw Nvidia leap to become the world's first $4 trillion public company.