All of this tweeting occurs and people like Warren Buffett keep on doing business as usual. It’s more so those at the bottom (retail) or those who are managing other people’s money and cannot convince them that there is nothing wrong. Nowhere is there a tier of people involved in the stock market that will lose their jobs just for ignoring or going against the president.
from what I have seen, most professional traders opt to watch the reaction and act based on that whether there are profits to be made, rather than the tweet itself.
Investing focused people will see all this action and will just treat it as something that occurs in the short term rather than the long term. Long-term investors will only care if the tweet causes share prices of solid companies to drop suddenly, as that’s a prime opportunity to buy more shares at a discount.
I doubt Trump is personally profiting from messing with the markets, but I wouldn’t put it past his family to do so. Trump just isn’t that kind of businessman, if he can be called such. Trump already has his interests in the fact he continued to run his company despite taking office, something they expected him to stop doing according to tradition.
All that matters is that it works and it is effective. So absolutely monitor his twitter account to see what happens next and perhaps you can catch the next shock wave early on.