Mark Zukerberg keeps $2.3 billion in cash.

The 36 years old youngest man to be worth more than $100 billion and the founder of Facebook CEO Mark Zukerberg also keeps 4.4% of total wealth which amount to $2.3 billion in cash.
This according to Nairametrics that most of them are more comfortable Investing on physical and financial asset instead of keeping their money in the bank for Interest that wasn’t worthwhile.