History indicates that investors should expect an overall gain in stocks for the rest of Trump’s term. But market returns have been lower when stocks were down in a president’

President Donald Trump's first 100 days in office, set to deliver the worst start for stocks since former President Richard Nixon's second term in 1973, have stoked volatility across markets and created expectations of a semi-permanent state of uncertainty.

Donald Trump promised Americans a "boom like no other" if they elected him president. The action certainly has been explosive.