I don't pretend to be particularly knowledgeable in the stock market arena, but, at least in my recollection, some of the best runs in the market have been during democratic presidencies haven't they (thinking Clinton and Obama)?
It seems to me that the market lags and sags or leaps and soars depending on the current news cycle.
Again, not an expert here
As far as the Covid diagnoses of the president and first lady, I hope they get through it easily and don't suffer any of the particularly nasty side effects that some have.