Citigroup Sales Hit European Stock Markets With ‘Flash Crash’
Several European stock markets suffered a “flash crash” on Monday morning following sell orders by Citigroup Inc., C 1.04% 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 10 a.m. 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.
https://www.wsj.com/articles/flash-crash-hits-stocks-in-europe-11651504299