Here is an interesting article in The Economist discussing short, medium and long term economic consequences of Trump’s presidency.
In a nutshell:
Short run stock market reactions – fears about the Treasury bonds as a safe investment, Central Banks will be on their guard.
Medium run consequences of his policy platform which includes tax cuts and spending increases on defence and infrastructure (so what happens with borrowing and debt?), the Fed’s role in the economy will be under threat as Trump wants a more hawkish direction, change in the distribution of income if the Republicans repeal Obamacare and millions of Americans loosing insurance.
Long run effects including international institutions, limited interest in international cooperation to limit tax avoidance or restrain the power of global banks, pull support from the IMF and the World Bank, some industries like fossil fuel companies will enjoy much more freedom.
And the great unknowns: how he uses the most powerful military!
You may read the full article here.