Investors have seen another volatile trading day after a slew of weak corporate earnings stoked fears on Wall Street of a United States recession.
The main Dow Jones index fell as low as 8,251 points before closing the day up 172 points or 2% at 8,691.
The technology-heavy Nasdaq in contrast lost 0.73% to close at 1,603.9 points.
London's FTSE 100 index closed 1.16% higher at 4087.8, while in Germany the Dax index ended up 1.12% and France's Cac 40 index was 0.38% higher.
It was the Dow's first rise in three days, and analysts suggested that it was due to higher oil prices, which boosted energy-related shares.
US light crude added $1.63 to reach $68.38 a barrel, after falling as low as $66.73 a barrel - its lowest point since June 2007.
The rise in oil prices followed comments by Chakib Khelil, the president of oil cartel Opec, who said member states had agreed in principle on cutting back oil production. However, the amount of cutbacks has yet to be agreed.
'Credit tsunami'
Earlier in the day frail investor confidence had been knocked by a speech by former Federal Reserve boss Alan Greenspan, who said the world was continuing to face a "once-in-a-century credit tsunami" which would have a severe impact on the US economy.
Weak US trading statements came from companies including Starwood Hotels, which predicts that it will see room occupancy fall in the last three months of the year.
Meanwhile, United Parcel Service predicts its deliveries for the same period will fall 4%.
On the jobs front, the US Labor Department reported that new applications for unemployment benefit rose by a larger-than-expected 15,000 last week to a seasonally-adjusted 478,000.
Asian falls
Investors are now increasingly concerned about the global economy and how long the financial crisis will endure. In other key market developments:
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