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NYSE shutdown raises new questions about US exchanges' technical vulnerabilities

The uncertainty sparked by the NYSE's closure highlights the dangers of financial technology that has grown bigger, faster and more intricate, while providing little transparency when things go wrong.


THE New York Stock Exchange (NYSE) ground to a halt for nearly four hours on Wednesday due to what officials said was a technical glitch, spooking investors and raising new worries about the soundness of the world's complex financial markets.

America's oldest exchange...

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