Market Extra: Stock-market investors are suddenly spooked by rapidly rising coronavirus cases in the U.S. Here’s why

Flare ups of COVID-19 cases in the U.S. are delivering a fresh gut check to Wall Street’s bullish demeanor, since its unprecedented rebound from a coronavirus-ignited downturn back in March.

Flare ups of COVID-19 cases in the U.S. are delivering a fresh gut check to Wall Street’s bullish demeanor, since its unprecedented rebound from a coronavirus-ignited downturn back in March.