How the Dow Jones industrial average and other major indexes fared on Friday

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:

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.