listing in history. In a filing with the US Securities and Exchange Commission, the space exploration and artificial intelligence (AI) company said it had sold $75bn in shares at $135 each. The price matches the estimate SpaceX gave last week, leaving the firm's expected initial stock market value to be nearly $1.8tn. At that value, chief executive Elon Musk - already the world's richest man - is set to become the first trillionaire. SpaceX is selling only 5% of the total shares available at first. Once trading starts, their value could rise or fall depending on how many shares are made available for sale in the Initial Public Offering (IPO), strength of demand, and what investors decide they are worth. It is essentially an auction on the open stock market. If they sell at or above $135, SpaceX will immediately become one of the most valuable public companies in the world. (BBC)