I have to ask, why would Trump make the time to do this with only a few days remaining in office? The only conclusion I come to based off an understanding of his persona is that he is doing insider trading
Read the order, it makes pretty clear points. Your conclusion could be made about any time period, if thats what you have already decided on, as if it can be a singular motivation.
When you reach a certain place in society you get to trade on material non-public information before the rest of the market, moving on.
This may affect supply chains for civilian supply chains, and then China's corops and government will have to make a choice: Keep contracts to make tons of consumer goods or continue to supply the military side.