The timing, which the report said was subject to change, also aligns closely with June 28, Musk's 54th birthday. SpaceX is seeking to raise as much as $50 billion at a valuation of roughly $1.5 trillion, according to the Financial Times. That would make it the largest public listing in history, far exceeding the $29 billion raised by Saudi Aramco in 2019. The unusual IPO timing underscores Musk's history of mixing personal whims with business decisions. These include developing Starship, the largest rocket ever built, for missions to the Moon and Mars, as well as plans to build space-based data centers for artificial intelligence.