It's a trove of information for portfolio managers and macro-watchers to gauge, and trade policy news headlines are likely to continue breaking. On July 9, President Trump announced a surprise 50% levy on copper imports, followed by a steep 50% duty on Brazil. 1 Together, it put the materials sector in focus.

U.S. stock indexes held near their records following President Trump's latest updates to his tariffs, as speculation continues that he may ultimately back down on them.

Stock indexes elsewhere around the world were mixed in their first trading after Trump said over the weekend that he plans 30% tariffs on goods from Mexico and the European Union. Those tariffs won’t take effect until Aug.