As an American, living in Italy......my fortunes don't rise or fall, based on who is in the White House.
The stock market went up and down under Kennedy, LBJ, Nixon, Ford, Carter, Reagan, Bush, Sr. Clinton, Bush Jr. Obama......and Trump.
In fact.......it's ALWAYS done so--------some quarters doing well, and some quarters.....not so good.
I could make my cat president of the United States.....and guess what? The stock market would go up and down, just the same,....every time the cat licked it's balls.