If I were buying stocks (which I am not) I would sit on the sidelines and let this play out for a month or so...
Then you will have more solid information on where the world economy is going.
Bonus—you may be able to buy in at much lower prices.
“ I would sit on the sidelines and let this play out for a month or so...”
Any tailspin will stop by April 15, as that is the last day to contribute to IRAs for 2019.