
According to Forbes, Mark Zuckerberg is more than $200 billion poorer than Elon Musk. However, his $266.6 billion fortune is still big enough to make him the second-richest person in the world.
The Facebook founder and his wife, Priscilla Chan, have publicly pledged to give away 99% of their Meta holdings as they work to end, cure or manage all diseases by 2100.