(Bloomberg) -- Pre-IPO trading in derivatives linked to SpaceX indicates a gain of anything between 30% and 50% for Elon Musk’s rocket, satellite and AI company as retail investors flock to the much anticipated listing.Most Read from BloombergSpaceX IPO Raises $75 Billion in Biggest Debut of All TimeXbox Plans Significant Layoffs as New CEO Plans OverhaulTrump Insists Iran Deal Is Close After Scrapping New StrikesTrump Vows New Attacks on Iran, Threatens Key Energy TargetsUAE and Iran Meet Face-