Sixth-Worst Point Loss Ever As Index Closes Down More Than 630 Points

NEW YORK (AP) — Stocks plunged Monday as anxiety overtook investors on the first trading day since Standard & Poor's downgraded American debt.

The Dow Jones industrials fell 634.76 points. It was the sixth worst point decline for the Dow in the last 112 years and the worst one-day drop since December 2008. Every stock in the Standard & Poor's 500 index declined Monday.

Investors worried about the slowing U.S. economy, escalating debt problems threatening Europe and the prospect that fear in the markets would reinforce itself, as it did during the financial crisis in the fall of 2008.

"'What's rocking the market is a growth scare," said Kathleen Gaffney, co-manager of the $20 billion Loomis Sayles bond fund. "The market is under a lot of stress that really has little to do with the downgrade." Instead, Gaffney said, investors are focused on "how Europe and the U.S. are going to work their way out of a high debt burden" if economic growth remains slow.

Investors desperately looked for safe places to put their money and settled on U.S. government debt — even though it was the target of the downgrade Friday, when S&P removed the United States from its list of the lowest-risk countries.

The price of Treasurys rose sharply, and yields, which move in the opposite direction from price, fell. The yield on the 10-year Treasury note fell to 2.34 percent from 2.57 percent Friday. That matches its low for the year, reached last week.

"This is largely a flight to safety," said Thomas Simons, money market economist with Jefferies & Co. "The bond market is really trading off of what's going on in the stock market." Money flowed out of stocks and into Treasurys.

Gold set a record. It rose $61.40 to settle at $1,713.20.

Crude oil, natural gas and other commodities fell sharply on worries that a weaker global economy will mean less demand. Oil fell 6.4 percent to settle at $81.31 per barrel.

Fear is spreading quickly through the market, said Dimitre Genov, senior portfolio manager with Artio Global Investors. "It's becoming a vicious cycle and could feed into consumers reducing their demand as well."

The Dow was down 5.5 percent a 10,809.85. The sharp drop extended Wall Street's almost uninterrupted decline since late July, when the Dow was flirting with 13,000. It fell below 11,000 for the first time since November.

The S&P 500 fell 79.92, or 6.7 percent, to 1,119.49. The Nasdaq composite index fell 174.72, or 6.9 percent, to 2,357.69.

Investors desperately looked for safe places to put their money and settled on U.S. government debt — even though it was the target of the downgrade Friday, when S&P removed the United States from its list of the lowest-risk countries.

The price of Treasurys rose sharply, and yields, which move in the opposite direction from price, fell. The yield on the 10-year Treasury note fell to 2.34 percent from 2.57 percent Friday. That matches its low for the year, reached last week.

"This is largely a flight to safety," said Thomas Simons, money market economist with Jefferies & Co. "The bond market is really trading off of what's going on in the stock market." Money flowed out of stocks and into Treasurys.