It’s starting to feel like groundhog day. Tesla and SpaceX chief Elon Musk saw another big drop in his fortune on Friday. This time he lost $10.7 billion in net worth as shares of his electric vehicle maker fell by 6.4% to end the week down 13.7%. The world’s richest person (worth an estimated $207.3 billion), is now $25.2 billion poorer than he was last Friday, when his tweet about placing his $44 billion Twitter takeover on hold sent Tesla shares soaring by 5.7%. So much for easing into the weekend.