Flags of European Union (EU) member state fly outside the European Investment Bank in Luxembourg, on Monday, July 15, 2019. Brexit has made Luxembourg a favorite EU hub for insurers, funds and asset managers to relocate to from the U.K. Moves include those by insurance giant American International Group Inc., private-equity firm Blackstone, RSA Insurance Group Plc, U.S. insurer FM Global, Lloyd's of London insurer Hiscox Plc and asset manager M&G Investments. Photographer: Geert Vanden Wijngaert/Bloomberg via Getty Images