From the admittedly small data set of 6 tweets, it looks like the answer is "no" with one exception where the market took over an hour to react. I'm curious why the Ford lag time was so different.
Because Ford's actions had been expected/known for some time. Trump literally had nothing to do with it. You don't just spin up factories like an EC2 instance.
His other tweets regarding other companies were all future-tense, and companies he is in a position to bully. Except for Nordstrom, of course.
My answer was maybe but I'd rather not put my money at the mercy of a lunatic.