• Elon Musk's SpaceX is planning for the largest IPO ever.
• The company said in a filing its seeking to raise $75 billion.
• It said it plans to offer 555 million shares at $135.

SpaceX officially wants to have the largest initial public offering of all time.

Elon Musk's rocket company is seeking to raise $75 billion in its initial public offering, according to a filing it submitted to the Securities and Exchange Commission. It plans to offer 555,555,555 shares of common stock at $135 per share.

That offering would be over twice as big as the prior record for the largest IPO, which was set by Aramco when it raised $29 billion for its opening in 2019.

The updated filing came a week after SpaceX's initial S-1, which offered an unprecedented look into the finances and mission of one of the world's most valuable private companies.

Under the proposed offering size, Musk — who serves as CEO, CTO, and chairman of the board — would hold around 82% of the voting power of the company's common stock, the filing said, allowing the founder to maintain significant control.

The S-1 filing is a required step ahead of an IPO, and SpaceX is expected to make its stock-market debut this month.

SpaceX is one of several blockbuster tech IPOs that are hotly anticipated, including OpenAI and Anthropic, which filed its own S-1 this week.