Elon Musk's SpaceX has raised $2.2 billion from Japanese investors as part of its $75 billion-IPO. The company had set aside 16.3 million Class A shares for the Japanese market, accounting for nearly 3% of its total offering, making it Japan's largest first-time share sale since JX Advanced Metals Corp.'s IPO last year. SpaceX has become the world's largest IPO.