Space Exploration Technologies Corp., known as SpaceX and owned by Elon Musk, is reportedly preparing a secondary share sale that could value the company at around $400 billion. This valuation would surpass its previous $350 billion mark from December 2024, setting a record for the most valuable private company in the United States. The increase in valuation is driven primarily by the growth of its Starlink satellite internet service, which has approximately 4 million subscribers and is expected to generate around $15 billion in revenue in 2025. Additionally, SpaceX's Falcon and Starship rocket programs hold a backlog of contracts worth about $22 billion from NASA and the Department of Defense. The planned share sale involves raising new capital and selling insider shares, reflecting investor confidence in the company’s expanding aerospace and satellite operations. This valuation also exceeds Elon Musk’s current net worth, estimated at around $395 billion.