Elon Musk speaks as part of a campaign town hall in support of Republican presidential nominee former President Donald Trump in Folsom, Pa., Thursday, Oct. 17, 2024. (AP Photo/Matt Rourke, File)
The U.S. Securities and Exchange Commission has sued billionaire Elon Musk, saying he failed to disclose his ownership of Twitter stock in a timely manner in early 2022, before buying the social media site.