SpaceX on Thursday priced the biggest-ever U.S. 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 artificial intelligence?provider at $1.77 trillion, a record for an initial offering. It was reported last week that the firm was setting the price at $135.

Thursday¡¯s pricing caps off a monthslong 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.