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Wild "Fat Finger" Price Swings In London Stocks Questioned

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Mark Melin
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Two of Europe’s largest publically traded companies experienced wild market swings of nearly 10% in less than a matter of seconds, a move that was quickly dismissed as a “fat finger” mistake but is being questioned by a High Frequency Trading (HFT) expert as a potential planned trading strategy.

Wild "Fat Finger" Price Swings In London Stocks Questioned

Price swings in London stock exchange

In London trading today, HSBC Holdings plc (NYSE:HSBC) (LON:HSBA), the large investment bank with its own proprietary trading division, rocketed 9.9% higher at approximately 11:20 a.m. in London before falling back in price minutes later, according to a report on

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Mark Melin is an alternative investment practitioner whose specialty is recognizing the impact of beta market environment on a technical trading strategy. A portfolio and industry consultant, wrote or edited three books including High Performance Managed Futures (Wiley 2010) and The Chicago Board of Trade’s Handbook of Futures and Options (McGraw-Hill 2008) and taught a course at Northwestern University's executive education program.