Stocks Tumbled Yesterday

U.S. stocks tumble as trading opens

The Dow falls 250 points minutes after the opening bell as investors fear a repeat of 2008.  

Nasdaq down over 3% 

Also: 

• Traders brace for week
• Investors: Think long-term
• Moody's urges deficit cuts

Dow Jones plummets 634 points

Stocks get slammed on the first trading day after the U.S. debt is downgraded.

Biggest one-day drop since 2008 

Also: 

• Investors dump stocks
• Fed takes the spotlight
• Oil hits eight-month low