The US Nasdaq index has closed above its dotcom boom record for the first time in 15 years.
The FTSE 100 has fallen 1.3% as geopolitical tensions and yesterday's tech sell-off put fresh pressure on UK stocks.
Dotcom bubble 2.0?
US stock markets followed in the footsteps of the FTSE 100 on Monday, with the Nasdaq reaching its highest level for almost 15 years.
Goldman Sachs has sought to reassure clients spooked by the recent falls in tech stocks, saying the US is unlikely to suffer a 2000-style crash.
US equity fund managers have begun cutting their exposure to technology stocks as the highly-rated sector falls out of favour with some investors following a long winning streak.
The FTSE 100 was down over 1% by 11am, with Hargreaves Lansdown leading the market lower after being downgraded by Morgan Stanley.
Facebook's share price fell as much as 5% in after-hours trading as the company announced a deal to buy chat application WhatsApp for some $19bn.
US stock exchanges halted all trading in companies listed on the Nasdaq on Thursday after a "serious" technical issue stopped it from quoting share prices accurately.
Shares in the US closed sharply lower overnight, with some indices hit by the worst one-day percentage falls since late June, as positive jobs data sparked fears of an earlier move to taper QE than expected.
The founder of online voucher company Groupon has been ousted after shares in the firm fell 24% in a single day.
Europe's leading equity markets took a beating yesterday as elections in Italy resulted in political deadlock.
Technology giant Apple saw shares dive 10% in after-hours trading, wiping $50bn off the market cap value, as its latest update to the market left analysts underwhelmed.
Progress in the fiscal cliff talks being held in Washington has given Wall Street a lift as the threat of a possible recession is averted.
US stock markets saw a third consecutive day of losses following Barack Obama's victory in the presidential election this week.
Wall Street bounced back shortly after open today following a two day lock-down forced by extreme weather conditions in New York City.
Shares in Google closed down 8% after the tech giant's third quarter results - revealing a 20% drop in profits - were mistakenly released ahead of the US market close.
Apple shares led the fallers on the Nasdaq shortly after open following a disappointing second quarter trading update from the tech giant.
Stronger than expected employment data could not prevent Wall Street selling off at the open this afternoon.
Shares on the major US stock markets shed more than 2% overnight as weak manufacturing data from the US, Europe and China fuelled fears of a global slowdown.
Wall Street opened higher this afternoon as investors anticipated central bank stimulus measures would be forthcoming when the Federal Reserve's policy meeting concludes on Wednesday.
Gold slid over 6% last month, making it the biggest May loss for the precious metal since a near 10% fall in 1982.