Definition of flash crash in English:

flash crash

noun

Stock Market
informal
  • An extremely rapid decline in the price of one or more commodities or securities, typically one caused by automated trading.

    ‘high frequency trading can trigger a flash crash’
    • ‘Look at the costs imposed by the May 2010 Flash Crash.’
    • ‘The resulting loss of bids entering the market coupled with automated stop-loss sellers created the flash crash.’
    • ‘On Wall Street, traders put last week's flash crash behind them.’
    • ‘After the flash crash, the Securities and Exchange Commission moved quickly to apply a Band-Aid in the form of circuit breakers to limit daily price moves.’
    • ‘The flash crash highlights how the market can take on a life of its own.’