UBS has completed the transfer of 1.2 million Credit Suisse clients, marking the most complex stage of integration between the two Swiss banking giants. The 10-month operation involved 80,000 tests and 132,000 hours of staff training, celebrated with oversized cowbells in Swiss tradition. This milestone follows UBS's state-orchestrated rescue of Credit Suisse in March 2023, preventing the competitor's collapse.

The integration represents the first merger between two global systemically important banks. UBS faces regulatory pressures as Swiss authorities push for tougher capital requirements following the Credit Suisse collapse. The bank expects to cut approximately 3,000 jobs in Switzerland while battling a 20% decline in its share value this year. Government decisions on additional capital requirements loom in April.

Remaining integration work continues in markets including Australia, Brazil, and Spain. More than 6,000 staff worked on the Switzerland portion, with over 17,000 complex client accounts requiring manual transfer. This unprecedented banking consolidation demonstrates both the scale of challenges in merging global financial institutions and the resilience of Switzerland's banking sector during systemic crisis.