New Delhi, June 12 -- SpaceX on Thursday priced the biggest-ever US initial public offering at $135 per share, making Elon Musk's rocket and spacecraft manufacturer one of the world's most valuable companies.

The IPO raised a record $75 billion on the sale of 555.56 million shares, valuing the space, satellite and AI provider at $1.77 trillion, a record for an initial offering. Reuters reported last week that the firm was setting the price at $135.

Thursday's pricing caps off a months-long effort that realized Musk's most ambitious project yet even as he stood a handful of financial traditions on their heads, and as some analysts question whether its lofty valuation is justified.

SpaceX will rank seventh among US-listed firms when its ...