Wednesday’s sell-off on Wall Street spread to Asia overnight and to Europe on Thursday.  Photograph: Getty

A sell-off that saw tech stocks drive the S&P 500 on Wednesday to its worst one-day drop since February rippled across global markets on Thursday.(...)

Bitcoin blues: new  enforcement actions are the first by the CFTC since it allowed the launch of bitcoin futures in December. Photograph: Benoit Tessier

The US derivatives watchdog said on Friday it had filed charges against three separate virtual currency operators alleging the defendants had defraude(...)

British trader Navinder Singh Sarao outside Westminster Magistrates’ Court, London, in August 2015, after he was granted bail on charges of helping trigger a multibillion-dollar US stock market flash crash. Photograph: Dominic Lipinski/PA Wire

It took Navinder Singh Sarao a long time to accept that he might have been scammed out of $50 million. Stuck in London’s Wandsworth prison, wracked w(...)

British prime minister Theresa May at the Conservative Party’s annual conference, where she announced a March deadline to trigger the Brexit process. Photograph: Carl Court/Getty Images

Sterling slid to a three-year low against the euro on Monday after prime minister Theresa May set a March deadline for the formal departure process fr(...)

Ryanair was one of the biggest gainers among European equities, rallying 6.1 per cent on Monday after maintaining its full-year profit forecast. Photograph: Niall Carson/PA Wire

European stocks rose on Monday while oil maintained its losses after sliding to the lowest close since May. Gold extended its first back-to-back week(...)

Sterling swung on Monday as anxiety about Britain’s referendum on staying or leaving the European Union continued to build. (Photograph: Matthew Lloyd/Bloomberg)

Sterling rallied on Monday as opinion polls swung in favour of British voters opting to remain in the European Union at this week’s referendum, under(...)

Souvenir matryoshka dolls featuring Vladimir Lenin, former Communist Party founder, center, and Vladimir Putin, Russia’s president, right, sit for sale at a kiosk on Red Square in Moscow . Photographer: Andrey Rudakov/Bloomberg

The Russian ruble extended declines after closing at a record low on Monday as data showed hedge funds turned bearish on the exchange rate for the fir(...)

Navinder Singh Sarao outside Westminster magistrates’ court, is accused of helping trigger a multibillion-dollar US stock market crash. Photograph: Dominic Lipinski/PA

Clad in a cheap, unbranded grey sweatshirt and matching tracksuit bottoms, Navinder Singh Sarao sat in silence in the dock of court number five at Wes(...)

A pedestrian looks at boards displaying stock prices and foreign currency values

European shares surged on Monday after euro zone leaders reached an agreement to move forward with a bailout loan for Greece to avert bankruptcy, foll(...)

The sun sets on the address where Nav Sarao Futures Limited is registered, in Hounslow, London April 21, 2015. Navinder Singh Sarao, a high-frequency trader, was arrested in the United Kingdom over charges he manipulated the futures market and played a role in sparking the May 2010 “flash crash”, the US Justice Department said on Tuesday. Through his company Nav Sarao Futures Limited Plc, Sarao profited to the tune of $40 million, the CFTC said, adding that his alleged manipulation stretched over the period from 2010 to 2014 and continued at least through early April of this year. (Photograph: Neil Hall/Reuters)

From a modest stucco house in suburban west London, where jetliners roar overhead on their approach to Heathrow Airport, a small-time trader was abou(...)

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