Wall street sign in New York with American flags and New York Stock Exchange background.
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Stock markets are struggling to rebound from Monday’s sharp sell off, when the Dow Jones industrial average fell 4.6%, its biggest one-day percentage decline since 2011, leaving many clients wondering what triggered the drop and whether worse is to come.

For a look look at what’s going on, watch the slideshow.

Six things to understand about financial market turmoil