A JPMorgan fund manager tells us what keeps him up at night — and pinpoints one trade that's overhyp

Geopolitics — from President Trump's proposed tax cuts to a potential war in North Korea and the end of quantitative easing — are at the forefront of many investors' minds. To get a sense of how the ceaseless news cycle affects the investing psychology, Business Insider caught up with Dennis Ruhl, chief investment officer of the US behavioral finance equity group at JPMorgan. Deputy executive editor Matt Turner asked Ruhl about tech stocks like Netflix and Facebook, central-bank...