The Dow Jones has fallen 78 points (0.9%) to 8,461 this morning after the World Bank released a gloomy forecast for global economic growth this year.
The FTSE 100 fell 1% on opening, with miners reacting to the news Xstrata has approached Anglo American over a merger.
Wall Street climbed immediately after opening Friday as 'Quadruple Witching' day kicked in.
London markets rose in early trading, following growing confidence in the US and global economies.
The FTSE 100 moved into positive territory this morning following yesterday's sharp losses, rising more than 20 points, or 0.47%, to 4,346.26 by 8.25am.
The Dow Jones plummeted in early trading today as commodity prices continued to fall.
The FTSE 100 has fallen almost 2% lower this morning as mining stocks slump due to sliding commodity prices and a stronger dollar.
The Dow Jones has begun to recover from a sluggish start this morning, with the market predicting improved June's US consumer sentiment figures.
Telecoms giant BT leads the risers in early trading on Friday as markets edged higher once more.
The Dow Jones rocketed on opening today, following news retail sales rose in May for the first time in three months on the back of growing consumer confidence.