NPR's Ari Shapiro speaks with former US trade representative and Council on Foreign Relations President Michael Froman about how global trade moves forward in the midst of President Trump's tariffs.

In today’s economy, time zones and borders are no longer barriers. The U.S. equity market—representing nearly two-thirds of global market capitalization—sits at the center of this transformation.

Overnight trading occurs between market close and open, extending beyond regular after-hours trading. Learn how it works ...