Dow Jones plunges 1175 points in worst day for US stocks since 2011
The Dow Jones industrial average plunged more than 1100 points as US stocks took their worst loss in six-and-a-half years.
Two days of steep losses have erased the market's gains from the start of this year and ended a period of record-setting calm for stocks.
Banks fared the worst as bond yields and interest rates nosedived.
Health care, technology and industrial companies all took outsize losses and energy companies sank with oil prices.
At its lowest ebb, the Dow was down 1597 points from Friday's close.
That came during a 15-minute stretch where the 30-stock index lost 700 points and then gained them back.
Market pros have been predicting a pullback for some time, noting that declines of 10% or more are common during bull markets.
There has not been one in two years, and by many measures stocks had been looking expensive.
"It's like a kid at a child's party who, after an afternoon of cake and ice cream, eats one more cookie and that puts them over the edge," said David Kelly, the chief global strategist for JPMorgan Asset Management.
He said the signs of inflation and rising rates are not as bad as they looked, but after the market's big gains in 2017 and early 2018, stocks were overdue for a drop.
The Dow finished down 1175.21 points, or 4.6%, at 24345.75.
The Standard & Poor's 500 index, the benchmark most professional investors and many index funds use, skidded 113.19 points, or 4.1%, to 2648.94.
That was its biggest loss since August 2011, when investors were fearful about European government debt and the US came close to breaching its debt ceiling.
The Nasdaq composite fell 273.42 points, or 3.8%, to 6967.53.
The Russell 2000 index of smaller-company stocks sank 56.18 points, or 3.6%, to 1491.09.
The slump began on Friday as investors worried that creeping signs of higher inflation and interest rates could derail the US economy along with the market's record-setting rally.
Energy companies, banks, and industrial firms are taking some of the worst losses.
The S&P 500 has fallen 7.8% since January 26, when it set its latest record high.
Investors are worried about evidence of rising inflation in the US.
Increased inflation might push the Federal Reserve to raise interest rates more quickly, which could slow down economic growth by making it more expensive for people and businesses to borrow money.
And bond yields have not been this high in years, making bonds more appealing to investors compared with stocks.
The stock market has been unusually calm for more than a year.
The combination of economic growth in the US and other major economies, low interest rates, and support from central banks meant stocks could keep rising steadily without a lot of bumps along the way.
Experts have been warning that that would not last forever.
As bad as Monday's drop is, the market saw worse days during the financial crisis.
The Dow's 777-point plunge in September 2008 was equivalent to 7%, far bigger than Monday's decline.
Stocks had not suffered a 5% drop since the two days after Britain voted to leave the European Union in June 2016.
They recovered those losses within days.
The last 10% drop for markets came in early 2016, when oil prices were plunging as investors worried about a drop in global growth, which could have sharply reduced demand.
US crude hit a low of about 26 dollars a barrel in February of that year.
A drop of 10% from a peak is referred to on Wall Street as a "correction".
Stocks in Europe also fell. Leading political parties in Germany, which is the largest economy in Europe, have struggled to form a government.
Chancellor Angela Merkel's conservative Union bloc and the centre-left Social Democrats are still in talks about extending their alliance of the past four years.
France's CAC 40 slid 1.5% while the Dax in Germany shed 0.8%.
Japan's benchmark Nikkei 225 tumbled 2.6% and the South Korean Kospi shed 1.3%.
Hong Kong's Hang Seng index sank 1.1%.