Yesterday (Monday, Feb. 24), US stocks suffered their worst trading day in two years.
New coronavirus cases that were reported outside China have rattled investors and dashed earlier hopes that the outbreak had already been, or is about to fairly quickly be, contained.
Following a wave of volatility that swept global markets, the S&P 500 (SPY) index closed down 3.4%, its worst single trading-day performance since February 2018.
Other major indices have performed even worse, led by energy and technology names.
The Nasdaq Composite (QQQ) lost 3.7% and the Dow Jones