Elon Musk, CEO of SpaceX.Jae C. Hong / AP file Elon Musk`s move last week to combine SpaceX and xAI has created one of the world`s biggest and most valuable private companies, which analysts say offers a mix of potential growth and financial risk as it heads toward public markets...

Elon Musk.Marc Piasecki / Getty Images file SpaceX on Monday acquired xAI, the artificial intelligence startup that also owns the X social media platform, in a deal combining two companies owned by Elon Musk...