Fear is back in the market. Investors are fretting about China's growth, a plunge in Argentina's peso and the profit outlook for U.S. companies.
Those worries have converged to set off a two-day rout in global markets, and have sent the Dow Jones industrial average down 200 points Friday.
Investors are dumping risky assets like stocks and currencies in countries with troubled governments. They are buying safer ones like bonds and the Japanese yen.
The Dow Jones industrial average fell 192 points, or 1.2 percent, to 16,003 as of 1 p.m. Eastern time Friday. The Standard & Poor's 500 index fell 23 points, or 1.3 percent, to 1,804. The Nasdaq composite was down 62 points, or 1.5 percent, at 4,155.
The downturn began Thursday following signs that manufacturing was contracting in China, a major importer of raw materials and a key driver of global economic growth. The values of currencies in several emerging markets have dropped. Those markets include Turkey, Russia, South Africa and Argentina.
"All of that is making the market very sensitive and very vulnerable to growth expectations in emerging markets," said with Anastasia Amoroso, global market strategist at J.P. Morgan Funds.
In another sign that investors are avoiding risk, stocks of smaller companies had even larger declines than broader U.S. market. The Russell 2000 index of small-company stocks fell 2.3 percent, compared with the Dow's decline of 1.3 percent.
Railroad operator Kansas City Southern fell the most in the S&P 500 index, plunging $15.49, or 13 percent, to $101.79 after its earnings fell short of what analysts' forecasts. Tool seller W.W. Grainger Inc. dropped $11.12, or 4 percent, to $245.54 after reporting income that also disappointed investors. Engine-maker Cummins Inc. fell $5.19, or 4 percent, to $126.88.
The Dow has fallen every day this week, leaving it down 2.8 percent. The S&P 500 had small gains Monday and Tuesday but is still down 1.8 percent since last Friday.
The declines in the U.S. were broad. Declining stocks outnumbered rising ones 7-to-1 on the New York Stock Exchange. All 10 industry groups in the S&P 500 fell. Utilities, telecommunication services and consumer staples stocks were the only sectors that held steady. Traders tend to buy those stocks when they want relatively stable, lower-risk stocks that pay high dividends.
Two leading companies from Seattle, Microsoft and Starbucks, were among the bright spots in an otherwise gloomy market. The software maker rose $1.14, or 3 percent, to $37.19. Its quarterly revenue and earnings beat Wall Street expectations because of strong sales of its new Xbox One console and Surface tablet. Starbucks rose $2.32, or 3 percent, to $75.71, after its quarterly earnings benefited from lower coffee costs and growing sales around the world.
The worries about emerging markets also sent overseas markets lower. Japan's yen surged, which hurts the prospects for Japan's export-driven economy. The Nikkei 225 fell 1.9 percent. France's CAC-40 index fell 2.8 percent and Germany's DAX lost 2.5 percent.
Bond prices rose as investors moved money into lower-risk assets. The yield on the 10-year Treasury note declined to 2.74 percent from 2.78 percent late Thursday.