About
Elon Reeve Musk (; born June 28, 1971) is a businessman known for his key roles in Tesla, Inc., SpaceX, and X, formerly Twitter (which he has owned since 2022). Since 2025, he has been a senior advisor to President Donald Trump and head of the Department of Government Efficiency. Musk is the wealthiest person in the world; as of February 2025, Forbes estimates his net worth to be US$397 billion.