Trading at the New York Stock Exchange was halted for several hours on Wednesday amid what officials have dubbed an "internal technical issue."
"We've had some technical malfunctions. Some may be related to connectivity with other exchanges. I believe we're going to have a temporary pause certainly in a variety of stocks perhaps floor wide," said Art Cashin, director of floor operations at the NYSE for UBS, said shortly after the halt, which took place at around 11:30 a.m.
Read MoreCashin: Here's whatto do after halt ends
Nevertheless, this is not the first time financial markets have been brought to a screeching halt because of a technical snafu.
Below is a timeline of several "glitches" that have rocked financial markets over the past six years.