Give away half your money: Billionaire Melinda Gates to new IPO millionaires

Billionaire philanthropist Melinda French Gates has advised newly minted IPO millionaires to donate "at least half" of their money away. "No matter how large [or] small it turns out to be, if you even have the ability to invest in these IPOs, you've the ability to give half away," she said. SpaceX's recent IPO reportedly made over 4,400 employees millionaires.