Growing concerns about a slowdown in China shook markets around the world on Friday, driving the U.S. stock market to its biggest drop in nearly four years.
For the day:
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The Dow Jones industrial average lost 530.94 points, or 3.1 percent, to 16,459.75.
The Standard & Poor's 500 index dropped 64.84 points, or 3.2 percent, to 1,970.89.
The Nasdaq composite fell 171.45 points, or 3.5 percent, to 4,706.04.
For the week:
The Dow is down 1,017.65 points, or 5.8 percent.
The S&P 500 index is down 120.65 points, or 5.8 percent.
The Nasdaq is down 342.19 points, or 6.8 percent.
For the year:
The Dow is down 1,363.32 points, or 7.7 percent.
The S&P 500 index is down 88.01 points, or 4.3 percent.
The Nasdaq is down 30.02 points, or 0.6 percent.