New Delhi, Dec. 17 -- Elon Musk has long been the richest person in the world, barring a few instances where leaders like Oracle's Larry Ellison took over him. But those cases do not seem to take place again anytime soon, as the tech CEO's net worth reached a meteoric $600 billion on Monday, on the heels of a SpaceX IPO.

According to Forbes Real Time Billionaires, Elon Musk's net worth has reached over $684 billion, making him the first person in the world to reach that mark, on the heels of reports that his SpaceX startup was likely to go public at a valuation of $800 billion.

Musk added a stunning $168 billion to his wealth in just one day on Monday, and increased it by another $8 billion throughout Tuesday, with his net worth now sta...