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A down day on the markets? Analysts say blame the machines

Feb 06, 2018 - Washington Post Blogs

As the Dow Jones industrial average collapsed 700 points in 20 minutes Monday afternoon and the stock market jerked from bad to cataclysmic, traders and analysts coalesced around an increasingly routine explanation: Blame the machines.

Lightning-fast trading models, automated sell orders and an arsenal of sophisticated algorithms may not have driven every bit of misery in what became the biggest stock-market point drop in U.S. history.

But investors and market experts say they are li...