Brad Gerstner says one-click investing could make every child a shareholder by funding via Apple Pay and auto-investing the next day into a fee-free S&P 500 ind

Brad Gerstner says one-click investing could make every child a shareholder by funding via Apple Pay and auto-investing the next day into a fee-free S&P 500 index fund. He also backs opening 73 million investment accounts for Americans under 18.