Elon Musk's net worth evaporated by nearly $80 billion in a single day, with Tesla and SpaceX both suffering significant losses. According to Forbes' real-time billionaires list, as of the US stock market close on November 5th, Musk's net worth was approximately $789.5 billion, a decrease of $79.3 billion in a single day, but he remains the world's richest person. The Bloomberg Billionaires Index shows a similar figure: approximately $785 billion, a decrease of $79.7 billion in a single day. Tesla closed down 10.77% that day, and SpaceX closed down 9.05%. Following the midterm elections, US tech stocks experienced one of their worst trading days in over a year, with the Nasdaq closing down approximately 5.5%. According to Forbes, Musk spent approximately $458 million on the midterm elections, but with little return.