The Texas-based company could go public with a valuation of more than $1.75 trillion, making it the largest IPO in history.

April 1 (Reuters) - Elon Musk's SpaceX has confidentially filed for its hotly anticipated U.S. initial public offering, a person familiar with the matter told Reuters on Wednesday, taking space exploration from a speculative venture to a mainstream investment theme.

April 3 () - SpaceX CEO Elon Musk said on Friday that the company's next ‌Starship test flight will take place in ‌May and not April as originally scheduled. Musk posted on ​social media platform X

The filing is private, so details such as number of shares being offered and their price are unknown, for now.

Elon Musk is requiring banks and other advisers working on SpaceX’s planned IPO to buy subscriptions to Grok, his artificial intelligence chatbot, the New York Times reported Friday, citing people familiar with the matter.

The private aerospace company was formerly headquartered in Hawthorne, but still has a significant presence in the city after its headquarters were moved to Texas.

Elon Musk’s SpaceX has confidentially filed for an initial public offering, setting the stage for what could become the largest stock market listing on record, a person familiar with the matter told Reuters on Wednesday.

A SpaceX Falcon Heavy rocket carrying the classified USSF-44 mission for the US Space Force was prepped for launch at the Kennedy Space Center's Launch Complex 39A in Florida on Oct. 31, 2022. [Watch launch live](https://www.