Get a jump start on the US trading day with Dani Burger on "Bloomberg Open Interest." President Trump is ramping up pressure on Europe over Greenland. At the World Economic Forum, he called for immediate talks to acquire the Danish territory. RBC Capital Markets Head of US Equity Strategy Lori Calvasina joined Bloomberg Open Interest with her take on the tensions and how markets are digesting his speech. Plus, business leaders react to Trump's speech. Citadel CEO Ken Griffin sits down with Bloomberg's Erik Schatzker in Davos to talk about the impact of Trump's policies, and what to expect in the year ahead.