api US equity markets were crippled by a technical breakdown on Nasdaq on Thursday that brought stock trading on the country’s second-largest exchange to a halt for more than three hours.

Trading in 2,500 US-listed companies, including Apple, Google and Microsoft, eventually resumed just over thirty minutes before the normal market close, allowing frustrated investors and traders an opportunity to ensure their portfolios were fully accounted for before the day’s end.

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http://www.ft.com/cms/s/0/03bdef9e-0b4d-11e3-bffc-00144feabdc0.html#axzz2clUXcZV6