Greenlight Capital founder David Einhorn thinks President-elect Donald Trump’s policies could accelerate the economy — and he has a range of investment ideas designed to capitalize on the incoming Trump administration.

If the policies Trump has outlined — corporate tax cuts, investment in infrastructure, military expansion, tighter immigration and trade protectionism — take effect, the economy is likely to grow, Einhorn said in a Tuesday report.

Trump’s policies could also result in a labor shortage and a tightening of monetary policy, Einhorn said. He shared tips on how to invest without getting burned by the change in tenants at the White House:

Bottom Line: Uncertainty Is Certain

Perhaps the most certain development with a new president known for changing his mind is uncertainty, and Greenpoint is responding by continuing to own gold.

“Our sense is that Mr. Trump doesn’t hold any core policy beliefs and is apt to change his mind as he sees fit,” Einhorn elaborated. “This will lead to more political and economic uncertainty and less stability.”