Led by Elon Musk, Tesla has helped investors achieve remarkable investment performance, and his other company, SpaceX, has also grown into a shining star company. Investors are eagerly anticipating SpaceX's IPO to once again enjoy the wealth feast brought by Musk.In fact, although SpaceX is not yet publicly traded, there is a corresponding asset available for trading in the U.S. stock market. That is the ETF The Destiny Tech100.What is The Destiny Tech100? Why is it referred to as a SpaceX concept stock?The Destiny Tech100 is a closed-end fund that invests in a group of startups on the verge of going public, known as unicorn companies. Among them, the largest holding is SpaceX. Approximately 36.9% of the shares currently held by this fund are SpaceX shares.SpaceX - The second highest valued startup in the worldIn the summer of 2024, SpaceX's valuation approached $210 billion, setting a new record for the valuation of private companies in the United States.Globally, SpaceX's valuation is second only to that of TikTok's parent company ByteDance, which is valued at approximately $268 billion