Most of Musk's wealth is wrapped up in his holdings of Tesla, and in the four trading days since the election, the electric vehicle maker's stock has soared by about 39%. That's lifted the company's market cap well past $1 trillion.
Musk's net worth has swelled to $320 billion, according to Forbes, putting him close to $90 billion ahead of Oracle founder Larry Ellison, the world's second-richest person. Ellison, a close friend of Musk's and a former Tesla board member, is a longtime Republican donor who's seen his own Trump bump, with Oracle's 10% increase lifting his net worth by about $20 billion.