I don't think it's terribly significant yet.
But these bubbly moments can indicate underlying issues.
Obama left behind a robust but unexciting economy. Trump immediately went down the usual Republican hole.
Lower taxes. You can always convince the base that lowering taxes produces compensating growth. But actually the aim is to build a deficit so you have an excuse for attacking redistribution programmes later. It's a way to reward the rich donor class, of course. Yock yock.
So the usual story will play out. Bubbles will develop. Then the economy will begin to fall apart again. And a Democrat will have to rebuild.