Stocks had yo-yoed from minor gains to a sharp drop and back again by midday Tuesday.
Stocks were trading close to the flatline on Tuesday.
Stock losses escalated in the closing minutes of Monday's session.
Stocks were holding onto earlier gains in midday trading Monday as markets hovered in wait-and-see mode.
The S&P 500 and Nasdaq extended their record run by market open Monday as Wall Street awaited a busy week of earnings and a meeting of the Federal Reserve.
The S&P 500 and Nasdaq closed at new all-time highs on Friday as an earnings-driven rally in shares of Amazon (AMZN), Google (GOOGL) and Microsoft (MSFT) pushed markets higher.
The Nasdaq was the clear winner on markets Friday. The tech-heavy index spiked into record territory as Amazon (AMZN), Microsoft (MSFT) and Google (GOOGL) rallied after reporting earnings.
The Nasdaq hit new intraday records as Amazon (AMZN) rocketed higher.
Stocks rocketed higher in Thursday's afternoon session as a rally in crude kicked off buying in the energy sector.
Stocks were caught in a tug-of-war between pleasing earnings reports from the likes of eBay (EBAY) and AT&T (T), and quarterly disappointments from General Motors (GM) and Qualcomm (QCOM).