SpaceX's initial public offering has been highly successful, with the company reaching a market cap of $2 trillion. Some investors who sold their shares early are reported to have left significant potential gains on the table, with one individual allegedly missing out on $60,000. The IPO is also expected to have a major impact on the company's employees and founder, with some reports suggesting it could turn thousands of employees into millionaires and make the founder one of the wealthiest people in the world.