If the S&P 500 breaks below 6,200, that's a sign the stock market may be headed for a more serious decline, Bank of America said.

Oracle Corp. closed 9.39% below its 52-week high of $260.87, which the company reached on July 31st.

The U.S. market is top-heavy, with Nvidia occupying a bigger weight than any company in modern history. Risks abound, our columnist says.

The Nasdaq Composite extended its slide on Tuesday–and even the Dow Jones Industrial Average was struggling after hitting an intraday record this morning. The tech-heavy index was down 1.5%, while the Dow was down 90 points,

Stock futures are pointing to a lower open for major indexes on Thursday as investors prepare for tomorrow's highly anticipated speech from Federal Reserve Chair Jerome Powell.

Walmart earnings are in early focus before the highly anticipated start of the Federal Reserve's gathering at Jackson Hole.