Wall Street braces for what could be the largest stock market debut in history, but the most cited academic on US IPO performance is warning buyers to sit on their hands. SpaceX is reportedly targeting a valuation of roughly $1.75 trillion in its planned offering, and Reuters this morning lined the deal up against three ... The Professor Who Tracks Every US IPO Just Issued a Warning on SpaceX: “Most of the Time, Things Don’t Go According to Plan.”