The health care giant's shares are down more than 50% in the last month. That's hurting the powerful U.S. stock-market index.

All that whipsawing on Wall Street in the first half of the year reflects real nervousness. Investors are worried the Fed may tip the economy into a recession.

Fear of higher energy prices led to a sharp sell-off on Wall Street, with the Nasdaq now in what's known as a bear market.

Markets went on such a roller-coaster ride this week that it even stumped the most veteran investors. The Federal Reserve plans to start raising interest rates to tackle inflation.

Bond and stock markets have tumbled this year as inflation continues to surge. The Federal Reserve has already indicated it will need to raise interest rates. The question is: Will that be enough?

The Dow Jones Industrial Average closed down 433 points and other exchanges around the world tumbled on Monday over fears about the omicron variant.

Stock markets around the world tumbled on concerns about the new variant. While it's too soon to tell exactly how the variant functions, virologists are rushing to learn more.

The Dow falls more than 500 points as a report says large global banks were involved in transactions flagged as possible money laundering and hopes dim for Congress to pass another relief measure.

Apple's stock split is the cause of the shake-up at the Dow Jones Industrial Average. But the symbolic shift also represents how Exxon, once a corporate titan, has diminished in stature.