Stocks skidded Thursday as a late drop erased the market's gains from the day before. Companies that sell oil, gold and silver tumbled along with the prices of those commodities.
The Dow Jones industrial average sank 253.25 points, or 1.4 percent, to 17,495.84.
The Standard & Poor's 500 lost 31.18 points, or 1.5 percent, to 2,041.89.
The Nasdaq composite index gave up 68.58 points, or 1.4 percent, to 5,002.55.
For the week:
The Dow has gained 230.63 points, or 1.3 percent.
The S&P has added 29.52 points, or 1.5 percent.
The Nasdaq has risen 69.09 points, or 1.4 percent.
For the year:
The Dow is down 327.23 points, or 1.8 percent.
The S&P is down 17.01 points, or 0.8 percent.
The Nasdaq is up 266.50 points, or 5.6 percent.