Stocks bounced back from their worst week ever with one of their best performances in history as investors cheered a global cash infusion designed to unthaw the credit market and avoid a global meltdown.  The Dow gained more than 900 points, its biggest one-day point gain ever.

As U.S. stocks opened higher on overseas gains ands news of European bank rescues, the experts cautioned investors to stay in the markets.

Stocks bounced back from their worst week ever as investors cheered a series of measures and cash injections by governments and central banks designed to prop up the banking sector and avoid a global meltdown. The Dow was up nearly 500 points, or more than 5.5 percent.

Stocks rallied at the opening bell Monday following a series of measures and cash injections by governments and central banks designed to prop up the banking sector and avoid a global meltdown. The Dow was up about 400 points, or 5 percent, within the first few minutes of  trading.

Wall Street looked set to rally Monday following a series of measures and cash injections by governments and central banks designed to prop up the banking sector and avoid a global meltdown.

Attention bottom fishers. Pay attention today because the market will finally hit bottom. That's the bold prediction of Jefferies managing director Art Hogan, who told CNBC, "Enough is going to be enough. If you look at all the carnage we've done to major market indices the bottom gets put in today."

The Dow pared its massive loss in the final hour of trading Monday after fear that the credit crisis is spreading rippled through world markets. The blue-chip index ended down about 370 points, after being down as much as 800 at one point.

The Dow dropped below 9,600 Monday after global markets took a pounding amid fear that the credit crisis is spreading around the globe.

The Dow dropped below 9,900 Monday after global markets took a pounding amid fear that the credit crisis is spreading around the globe.

The Dow dropped below 10000 Monday after global markets took a pounding amid fear that the credit crisis is spreading around the globe.

Wall Street was set to plunge at the open Monday as a $700 billion plan approved by Congress on Friday failed to restore confidence in the global banking system.

The Securities and Exchange Commission is investigating whether traders spread rumors to drive down shares of former investment banks Bear Stearns and Lehman Brothers, USA Today reported, citing an SEC subpoena.

On Monday, one of the darkest days in Wall Street’s history, the actress who was supposed to ring the closing bell at the New York Stock Exchange decided not to push the button given the turmoil in the markets, reports the New York Stock Exchange.