Remember when nearly the entire business media predicted that if Trump was elected the stock market would crash immediately? Some of my smartest friends (at hedge funds) placed large bets mid to late 2016 that the market would decline. Now here we are. The lesson isn't that Trump is awesome for the economy (maybe he is, maybe he isn't) or that the market won't crash tomorrow (maybe it will, maybe it won't) but rather…
We won't know what Trumps policies do until 6 months to year from now.
Look at how long it took for the housing market bubble to grow before bursting - 15 to 30 years, depending upon which policies you view as being contributing factors.