The US currency also came off its highs after minutes of Wednesday's FOMC meeting emerged.
Investors with over 5% stake cannot sell shares for the next six months.
United Airlines grounded its flights too over 'technical issue'.
Hours before the New York Stock Exchange shutdown, Anonymous group warned of potential problems on Wall Street.
The Conservative pledge to cut UK corporation tax progressively to 18% in 2020 caught investor's eyes.
BREAKING: New York Stock Exchange says 'additional information will follow as soon as possible'.
Distributed ledger technology could create jobs for an army of slaves to the algorithm.
EUR/GBP has risen to a two-week high also helped by Greece-related optimism.
Mainland shares slump by more than 8% in early trade despite further government efforts.
Mining stocks also hit hard after cuts to coper price following slow growth in China.
Australian dollar has fallen to a new 6-year low.
The Chinese government is trying, and failing, to reorder the country's tumbling equity markets.
What surprises could Chancellor George Osborne spring on the great British public?
The single currency is holding firm as Greece prepares to unveil new proposals to alleviate debt crisis.
Securities Times reports that 760 major companies on Shanghai and Shenzhen Stock Exchanges had suspended trading in past week.
Chinese shares slump more than 3% on 7 July trading as investors remain concerned over government measures to stem price fall.
The business confidence index has fallen to its lowest level since September 2012.
Markets were taken aback by overwhelming support for the Greek government's anti-austerity stance.
The Australian inflation rate is at a three-year low.
Will the EU paymasters follow through with threats to boot Greece out of the Eurozone?
Greek vote expected to strengthen Swiss franc as a safe haven option.
The hormones cortisol and testosterone may destabilise financial markets by inducing traders to take more risks, a study says.
Euro has not broken lows of 29 June when Greece announced the referendum.
Australia's S&P/ASX, Japan's Nikkei and Hong Kong's Hang Seng all decline.
British banks RBS, Barclays, Standard Chartered and HSBC have been named in investigation.
The referendum on whether Greeks will accept a debt deal had investors sitting tight.
The oil major will pay $18.7bn to fully settle 2010 Gulf of Mexico Deepwater Horizon oil spill claims.
Greece has switched back after showing readiness to accept most conditions of the IMF deal.
Word of a new runway for Heathrow airport lifted airline stocks to the top of the market Wednesday.
The purchasing manager's index fell to a 26-month low of 51.4 in June, down from a revised reading of 51.9 in May.