Musk's bad week: Tesla suffers worst slump since 2022, SpaceX drops ahead of Starship test flight

Tesla shares plunged 18% during the week to close at $313.03 on Friday, their worst weekly slump since 2022. And SpaceX continued its downward slide, dropping 7.2% over five days to close at $115.07 Friday, its lowest since the company's record IPO last month. The declines in both stocks wiped away about $130 billion of Musk's wealth, weeks after he'd become the world's first trillionaire.