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NEW YORK, NY - SEPTEMBER 29: A street sign for Wall Street near the New York Stock Exchange (NYSE) on September 29, 2014 in New York City. In morning trading the Dow opened down more than 100 points, continuing a recent volatility trend in the markets partly fueled by drops in tech stocks and continued protests in Hong Kong. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - SEPTEMBER 29: A street sign for Wall Street near the New York Stock Exchange (NYSE) on September 29, 2014 in New York City. In morning trading the Dow opened down more than 100 points, continuing a recent volatility trend in the markets partly fueled by drops in tech stocks and continued protests in Hong Kong.  (Photo by Spencer Platt/Getty Images)

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A television monitor displays an Apple Inc. stock chart on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Friday, April 20, 2018. U.S. stocks pared a weekly gain as a selloff in chipmakers entered a third day, with investors concerned there's been a slowdown in smartphone demand. Photographer: Michael Nagle/Bloomberg via Getty Images

A television monitor displays an Apple Inc. stock chart on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Friday, April 20, 2018. U.S. stocks pared a weekly gain as a selloff in chipmakers entered a third day, with investors concerned there's been a slowdown in smartphone demand. Photographer: Michael Nagle/Bloomberg via Getty Images

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A monitor displays stock information on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Friday, Aug. 17, 2018. U.S. stocks rose in light summer trading Friday, but disappointing earnings guidance from chipmakers Nvidia Corp. and Applied Materials Inc. dragged down technology shares. Photographer: Cedric von Niederhausern/Bloomberg via Getty Images

A monitor displays stock information on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Friday, Aug. 17, 2018. U.S. stocks rose in light summer trading Friday, but disappointing earnings guidance from chipmakers Nvidia Corp. and Applied Materials Inc. dragged down technology shares. Photographer: Cedric von Niederhausern/Bloomberg via Getty Images

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Monitors display Snap Inc. signage while traders work on the floor of the New York Stock Exchange (NYSE) during the company's initial public offering (IPO) in New York, U.S., on Thursday, March 2, 2017. Snap Inc., maker of the disappearing photo app that relies upon the fickle favor of millennials, jumped in its trading debut after pricing its initial public offering above the marketed range. Photographer: Michael Nagle/Bloomberg via Getty Images

Monitors display Snap Inc. signage while traders work on the floor of the New York Stock Exchange (NYSE) during the company's initial public offering (IPO) in New York, U.S., on Thursday, March 2, 2017. Snap Inc., maker of the disappearing photo app that relies upon the fickle favor of millennials, jumped in its trading debut after pricing its initial public offering above the marketed range. Photographer: Michael Nagle/Bloomberg via Getty Images

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NEW YORK, NY - JUNE 19: Traders and financial professionals work on the floor of the New York Stock Exchange (NYSE) ahead of the closing bell, June 19, 2017 in New York City. As tech stocks surged, the Dow Jones industrial average rose over 140 points on Monday. (Photo by Drew Angerer/Getty Images)

NEW YORK, NY - JUNE 19:  Traders and financial professionals work on the floor of the New York Stock Exchange (NYSE) ahead of the closing bell, June 19, 2017 in New York City. As tech stocks surged, the Dow Jones industrial average rose over 140 points on Monday. (Photo by Drew Angerer/Getty Images)