The world's biggest wealth manager did not issue a specific profits warning. But John Cryan, chief financial officer, said exceptional factors, alongside difficult markets, could prompt a hefty loss, in spite of the group having cut costs, reduced risks and shifted toxic credits off the balance sheet.
Last month's SFr6bn ($5.2bn) investment in the bank by the Swiss government, and a deal to transfer toxic assets to Switzerland's central bank, have improved sentiment.
However, Mr Cryan said that if such confidence – reflected in higher values for UBS's debt – persisted, the bank could be obliged to take a significant charge under accounting rules requiring companies to reflect the value of repurchasing their own debt in their accounts.
您已閱讀70%（742字），剩餘30%（315字）包含更多重要資訊，訂閱以繼續探索完整內容，並享受更多專屬服務。