The investor roadshow for SpaceX begins tomorrow when banks pitch the business to potential shareholders. The company is scheduled to list on the Nasdaq exchange on June 12, becoming the sixth-largest US-listed corporation. Private investors will be hoping for big gains. But whatever happens to the shares when trading begins, Wall Street will benefit from a fees bonanza. It emerged yesterday that SpaceX is negotiating to pay less than 0.75 per cent on its supersized IPO – but this will still land advisers, led by banks Goldman Sachs and Morgan Stanley, some $500million (£370million). A spokesman for Winterflood owner Marex Group confirmed yesterday that the former is the so-called POP – or public offer platform – operator, which handles the sale of shares to retail investors in the IPO. Wealth: The initial public offering is expected to make Elon Musk, pictured, the world’s first trillionaire But it declined to comment on any other aspect of the flotation. Under the rules of the US financial regulator, the Securities and Exchange Commission, strict secrecy governs all such details until the formal marketing process begins. Yesterday, the investor platforms gave a few more details on the application procedure for those registering, but they also added warnings about the risks involved. For example, anyone applying for a slice of SpaceX will not know the exact purchase price for the shares. This information will be revealed on June 11. Some British investors have a stake in SpaceX if they have savings in Baillie Gifford funds such as Scottish Mortgage. DIY INVESTING PLATFORMS