An investigation found that a poorly executed algorithmic trade was at the root of the "flash crash".

一份调查显示，一个未得到充分执行的计算交易是“瞬间暴跌”的根本原因。

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A five-month federal investigation of the so-called flash crash suggested a single big trade may have been the cause.

VOA: special.2010.12.31

Flash Mob America, which stages events at corporate conferences and trade shows, began in 2009 after a group of friends put on a flash-mob tribute to Michael Jackson, which went viral.

WSJ: Spontaneity for Hire: Flash Mobs Go Corporate

This dynamic boosts the chance the flash-order trader will complete the trade on the exchange and get the rebate.

WSJ: Ban on Flash Orders Is Considered by SEC

The issue becomes just the latest in a long list of issues the SEC is examining regarding the current U.S. market structure, right up there with high frequency trading, dark pools, flash trading, market access, and trade tracking and reporting.

FORBES: SEC Takes Aim at Wild Market Swings