Union Bank of California's new investment chief is overhauling services for wealthy individuals and institutions, with an eye toward bolstering customer loyalty.

Yoichi Kambara, a bank vice chairman who was named head of trust and private financial services last month, said trust services, investments, deposits, and credit for clients with net worths of $5 million or more will be centralized in a private banking group in January. Currently, those services are split up along product lines.

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