Quick ReadRon Baron built a $25 billion SPCX position from $2 billion in capital, projecting 20 to 30 times returns over the next decade. Baron turned $400 million in TSLA into $7.7 billion profit by holding through repeated 30%-plus drawdowns, and he is applying that same approach to SpaceX. Baron projects SpaceX will be worth "at least $40 trillion" within 10 to 15 years, starting from a $2 trillion IPO valuation. Jorge Villalba / iStock Unreleased via Getty ImagesWhat's particularly notable is that this is the same investor who called Tesla when almost no one on Wall Street would touch it. Between 2014 and 2016, Baron put $400 million into Tesla, a position that eventually generated $7.7 billion in profit.