SpaceX has finalized the largest initial public offering in US history by raising $75 billion at a valuation of $1.77 trillion.The company debuted on the Nasdaq with shares priced at $135, reserving 30% of the offering specifically for retail investors.Elon Musk retains an 82% voting stake as the company prepares to fund Mars exploration and the expansion of the Starlink network.Market analysts remain divided on the valuation due to a $4.9 billion loss reported by the aerospace firm during the previous fiscal year.