London declining in international importance:
Amsterdam Topples London as Europe’s Main Share-Trading Hub
Amsterdam overtook London as Europe’s largest share trading center in January after Brexit saw about half of the city’s volumes move to the continent.
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Britain lost its rights to access the single market on Dec. 31 and the European Union has not permitted investors inside the bloc to trade shares in companies such as Airbus SE and BNP Paribas SA from the U.K.

