A. there is no China trade deal
B. Trump tanked the stock market with his tariffs, which whether you agree with them or not as policy, are bad for the stock market.
C. Trump ordered the policies that led to the Huawei arrest.
On B:
It is complex. There is more in play than just the tariffs, more factors (e.g., the Fed, a rogue corporation that controls our money), and more motives (e.g., They want it to tank, to hurt a nationalist president).
To the extent that it genuinely hurts the stock market, it is precisely because the current set-up is anti-American. Globalists are exploitative, and do not want their damaging schemes damaged.
Tariffs were a perennial plank in the authentic Republican Party platform before globalist Trotskyists calling themselves Neoconservatives usurped the party after WWII. I have yet to hear a single anti-tariff Neocon honestly address this.
Tariffs can be a powerful tool, as a weapon or as a threat.
Trump is pro-America. Today’s stock market corporations are not; they are fleecing America, and they do not want anyone interfering with that.
Of course that is going to cause trouble. Who ultimately gains the ascendancy has yet to be seen. Probably they will win. Trump is surrounded by Neocons.
Corporatism (a kind of fascism), monopolism, and globalism are not conducive to a free market.