It sure is flowing out.
Prior to the financial crisis of 2008–09, almost half of global offshore wealth was managed in Switzerland. Today this share is down to about 20%.
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Oracles have spoken - what the future holds
Identifying the residence country of the owners of offshore assets still faces data limitations and requires assumptions. The main issue is that offshore assets are often held indirectly through intermediate structures such as shell companies, trusts, and holdings; often themselves located in other offshore financial centers (such as in Panama or the British Virgin Islands). As a result, a large fraction of the wealth managed by offshore banks is assigned to the territories where these intermediate structures are incorporated – not to the countries where the beneficial owners of the assets live.