Fantastic idea for a bot:

This bot watches Donald Trump’s tweets and waits for him to mention any publicly traded companies. When he does, it uses sentiment analysis to determine whether his opinions are positive or negative toward those companies. The bot then automatically executes trades on the relevant stocks according to the expected market reaction. It also tweets out a summary of its findings in real time at @Trump2Cash

There’s also an article on the background:

I had fun building this. In fact, I started coding while on a plane to Europe and had the first version working by the time we touched down. (Shout-out to Cloud Platform!) But don’t bet your life savings on it. Markets are unpredictable. Trump is unpredictable.