Wall Street went on a bargain-hunting bonanza, with a frenzy of activity in the final hour of trading, sending shares up 10 percent.

Investors went on a late-day buying spree, scooping up shares of beaten down stocks and sending the major indexes soaring 7-8 percent.

Volatility reigned again on Wall Street Tuesday as jittery investors had a hard time committing to the morning's early rally -- or to the subsequent paring of gains.

Stocks opened higher Tuesday after Monday's late selloff as international markets bounced back amid expectations of a U.S. rate cut.

Stock index futures pointed to a substantial gain at the open Tuesday, following Monday's late selloff, as international markets rebounded and investors pondered the effect of an upcoming expected interest-rate cut.

It's all in the attitude today: Stocks rose after an improvement in consumer confidence.  Stocks were already pointing higher as oil prices receded but that little shot of confidence pushed the Dow up to a triple-digit gain.

Executives across various industries shared their economic outlooks on "Squawk Box" this morning.

It's all in the attitude today: Stocks rose after an improvement in consumer confidence.  Stocks were already pointing higher as oil prices receded but that little shot of confidence pushed the Dow up to a triple-digit gain.

SAP posted solid second-quarter results despite global economic turmoil and gave an upbeat 2008 outlook, sending shares in the world's biggest business software maker more than 6 percent higher on Tuesday.

Oracle amended its lawsuit against SAP on Monday, saying SAP executive board members were warned that its TomorrowNow unit was engaged in corporate theft before SAP bought TomorrowNow.