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A pensioner with walking sticks looks at share prices on display at the entrance to a branch of UBS on Bahnhofstrasse in Zurich. The Swiss banking industry holds an estimated 4,000 billion Swiss Francs (USD 4,240 billion) in assets, more than half of it foreign, including CHF 880 billion in undeclared European assets alone, benefiting from the country's famous banking secrecy laws.