New Delhi, June 13 -- Elon Musk became the world's first trillionaire after shares of his rocket company SpaceX soared in Wall Street's biggest initial public offering of stock.

Shares in SpaceX jumped more than 19% after opening for trading Friday, a sign that investors are looking past the billions the company is losing and instead betting that its massive investments in satellites, orbital data centers and artificial intelligence will pay off in the future.

SpaceX opened around midday at $150 a share, then rose to around $168, before finishing the day just below $161. That price gave the company a market value of $2.1 trillion, making it the sixth largest public U.S. company - larger even than its founder and CEO's other big business...