Ok, lets do some math. The GDP of the US is $28 trillion.
You shouldn’t be using GDP for this, as GDP is a notoriously bad metric for understanding the flow of wealth. If I pay you $100 to wash my car and you pay me $100 to wash your car, the GDP of our actions is $200 even though both of our wealth is unchanged. GDP is simply a measure of how fast money is circulating.
You need to be looking at that actual allocation of the wealth, as the rich like to use a myriad of loopholes to obfuscate their acquisitions.