May 2, 2022 Citigroup Inc.’s London trading desk was behind a flash crash in Europe that sent shares across the continent tumbling after a sudden 8% decline in Swedish stocks. The selloff was triggered by a large erroneous transaction made by the U.S. bank’s London trading desk, according to people with knowledge of the matter who asked not to be identified discussing private information. A knee-jerk selloff in OMX Stockholm 30 Index in five minutes wreaked havoc in bourses stretching from Paris to Warsaw toppling the main European index by as much as 3% and wiping out 300 billion euros ($315 billion) at one point. A representative for Citi declined to comment. While it was not immediately clear what caused the short-lived slump, a spokesman for Nasdaq Stockholm said it wasn’t a technical glitch on its part. “Our first priority was to exclude technical issues in our systems, and our second priority was to exclude an external attack on our systems. We have now excluded both,” said David Augustsson, a spokesman for Nasdaq Stockholm. The error could potentially cause monetary and reputational damage to Citi as Nasdaq said it will not cancel any trades made on the Nordic markets. Joakim Bornold, savings economist at Soderberg & Partners, said that equity markets can be very sensitive to erroneous trades despite safeguards. https://www.bloomberg.com/news/arti...trading-desk-behind-rare-european-flash-crash
What a coinkadince fattyfinger right at resistance during globex overnight and Euro MayDay holiday:- CNBC of course got the time wrong:- "The outsized move extended the pan-European STOXX 600 equity benchmark’s fall by more than 2 percentage points in the space of about two minutes from around 7:58 GMT, although the closure of London markets made for holiday-reduced volumes." 8:58 GMT which is 3:58 EDT (back in sync 5 hours apart as usual most of the year)
this is the chart. unfortunately, there was no trading opportunity ; there was hardly any retracement. So I didn't manage to profit from the down movement and up movement. for those who manage to catch these super rapid movements, their profit wouldn't be very big due to slippage and internet speed delay. Notice that during the up movement, the candlestick was extra long.
Error by Citi trader causes European stock markets to lose €300 billion in minutes The US bank acknowledges the mistake caused Sweden’s benchmark OMX 30 to fall by 8% and spread to other exchanges, although these rallied back quickly again https://english.elpais.com/economy-...k-markets-to-lose-300-billion-in-minutes.html