Several European stock markets suffered a "flash crash" on Monday morning, 2 May, following sell orders by Citigroup, according to people familiar with the matter.
Trading was halted momentarily in several markets after major stock indexes plunged for a few minutes just before 10am. Central European time. Stocks in the Nordic region were hit the hardest, though other European stocks also tumbled briefly on a day when share prices around the globe declined.
Nasdaq...
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