Elon Musk said Friday on Twitter he is selling almost all of his possessions and will not own a house.

Musk, the founder and CEO of SpaceX and CEO of Tesla Inc., also tweeted Friday morning that Tesla’s stock price was too high.

Besides SpaceX and Tesla, where he also serves as product architect, Musk is founder of The Boring Company; co-founder of Neuralink; and co-founder and initial co-chairman of OpenAI.

Earlier this week, SpaceX was one of three companies chosen by NASA to design a lunar landing system for the agency's planned 2024 moon missions, which will return humans to Earth's only satellite for the first time since 1972.

SpaceX is building the Starship, a lander that will use the SpaceX Super Heavy rocket. Blue Origin of Kent, Washington, is developing a three-stage lander to be launched on its own New Glenn Rocket System, while Alabama-based Dynetics is developing a single structure for ascent and descent.