Since Tim Cook's January 3 donation of $1M to Donald Trump, the value of Apple has fallen by more than $300B.

Assuming Apple still has about 160,000 employees, since Tim Cook's January 3 donation to Donald Trump, the value of Apple has dropped by $1.8M per employee.

Nobody can know how much, if at all, Tim Cook's contribution correlates with the current price. To know that, we'd have to go back in time and undo the contribution. I wish we could.