Space Exploration Technologies Corp., or SpaceX as it is commonly known, has rocketed to public prominence and a market capitalization of some $74 billion even as its actual ownership remains very much out of sight. Investor interest is keen. Only a select few entities have been able to acquire direct ownership stakes in the Elon Musk-founded company. Despite that, there are ways to acquire an indirect ownership interest, at least until there’s an initial public offering. Here are several options for investors interested in owning a slice of SpaceX.