All three of the US major averages (^DJI, ^IXIC, ^GSPC) clocked out of Thursday's session in negative territory, the Nasdaq Composite even falling by 1.67%. Markets and investors alike are evidently bracing for Federal Reserve Chair Jerome Powell's speech from the Jackson Hole Economic Symposium tomorrow morning.

Julie Hyman and Jared Blikre recap the day's trading activity, focusing in on the surge in the volatility index (^VIX).

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This post was written by Luke Carberry Mogan.