Elon Musk just woke up $168 billion richer. Even as the wealthiest man in the world, he is still setting new records and raising the bar for what ultra-wealthy looks like.

The serial CEO’s net worth shot up to $638 billion on Monday, making him the first person estimated to be worth more than $600 billion by Bloomberg’s wealth index.

The 54-year-old witnessed an unprecedented wealth surge after SpaceX, an aerospace company he founded and leads, hit a $800 billion market cap in an insider share sale. SpaceX subsequently became the most valuable private company in the world—and by holding a 42% stake in the business worth $317 billion, Musk’s fortune soared.

In fact, his fortune has multiplied so much that fellow billionaires can’t keep up; Oracle cofounder Larry Ellison very briefly knocked him from the top spot earlier this year, but swiftly lost $34 billion.

Even the wealth of Google cofounder and ex-CEO Larry Page, who is the second richest person alive, pales in comparison to Musk’s bank account. Page is worth $265 billion: less than half of what the SpaceX CEO sits atop.