If Donald Trump resigned tomorrow, I think the Dow would go up 1,000 points.
One has to remember that the rally since Trump’s election has been based not on Trump’s agenda [but] on the Republican agenda. I would say that 90% of the people, investors on Wall Street, and most of the CEOs, would prefer a President Michael Pence, rather than Donald Trump. So, in a way you know what kind a trouble he’d be, might he have to resign, might he be impeached... all that does not derail the Republican agenda, upon which this rally was based.
~ Jeremy Siegel, CNBC interview, May 17, 2017
(See "Man who called Dow 20,000 says stock market could see 1,000-point surge if Trump resigns," MarketWatch.com, May 18, 2017.)