Elon Musk becomes trillionaire again. Elon Musk reclaimed his trillionaire status on Monday after shares of his companies surged, boosting his wealth by $65 billion to $1 trillion, according to Forbes. Tesla shares rose 2.2% after its third-quarter deliveries beat analyst expectations, while SpaceX shares gained over 7%. Musk first became a trillionaire in June but lost the status after shares of both companies fell.