<a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Tim+Cook+-+Business+Executive&family=editorial&specificpeople=8084206 ng-click='$event.stopPropagation()'>Tim Cook</a>, chief executive officer of Apple Inc., waves to the audience during the opening of 'Startup Fest', a five-day conference to showcase Dutch innovation, in Amsterdam, Netherlands, on Tuesday, May 24, 2016. The Digital City Index for 2015 ranked Amsterdam Europe's second-best city, behind London, for tech startups. Photographer: Marlene Awaad/Bloomberg via Getty Images