It’s been a brutal week on Wall Street, and we still have Friday to go. Analysts are deeply concerned about the coronavirus and how it will affect bottom lines across the world.

The Dow fell more than 4% or nearly 1200 points at the close for the single largest one-day drop in history. The Wall Street Journal sums it up this way:

“Obviously it’s a bloodbath,” said David Bahnsen, chief investment officer of The Bahnsen Group, a wealth-management firm. “When you get into a free-fall mode, there’s really little that can be done but wait for some sort of footing to be found.”

Some U.S. companies say they could lose as much as half their annual revenue from China if the coronavirus epidemic extends through the summer. American businesses will generate no earnings growth in 2020 if the virus becomes widespread, Goldman Sachs Group’s equity analysts warned on Thursday.“