Since 1885, the New York Stock Exchange has closed its weekday trading hundreds of times, for everything from the 9/11 terrorist attacks to one-minute moments of silence marking the deaths of presidents and astronauts. The stock exchange has shut down to deal with computer-related problems 16 times since 1974.

And according to data provided by the NYSE, today's stoppage was the longest computer-related shutdown to date.

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Stocks didn't trade on the NYSE for most of the day on Wednesday, due to a “technical issue” which halted trading around 11:32 a.m. (Reuters)