The prospect of Catalan independence from Spain has led six of the seven largest companies domiciled in the region to move their official domiciles. In the unlikely event of a secession the independent state would not automatically be part of the EU customs area or free trade area, greatly complicating international trade. Panjiva data shows the region’s two main ports – Barcelona and Tarragona – accounted for 19% of Spain-to-U.S. seaborne shipments in the past year. Major shippers including Repsol (oil products), Freixenet (wine), Puig (luxury goods) and Lecta (paper), while the leading...