After raising record $75B in IPO, Elon Musk’s SpaceX pops 20% in trading debut

Updated with Friday’s trading: Shares of Elon Musk’s Space Exploration Technologies Corp. jumped 19% over their $135 asking price Friday morning after one of the most hotly anticipated initial public stock offerings in living memory. The stock closed at about $161, valuing the company at $2.1 trillion.