[Musk: Tesla and SpaceX stocks make up almost my entire 'wealth'] BlockBeats news, December 30, Musk posted that the Tesla and SpaceX stocks he holds make up almost his entire 'wealth.' Their value growth depends entirely on how many products these companies produce and what services they provide. This means my 'wealth' can only increase by producing more products and services for the public. Additionally, any other shareholders of Tesla and SpaceX, including employees, can share in the benefits of stock appreciation.