Bank of New York Mellon Corp., with $27.1 trillion of assets under custody and administration, said it's helping clients pull cash from Denmark and Switzerland as the central banks take measures to stem appreciating currencies.

“We've been working with our clients on how to sweep their money out of Denmark so they don't get subjected to a charging environment,” Chief Executive Officer Gerald Hassell said in an interview in Doha, Qatar. In Switzerland “we've been able to work with our clients to not have cash trapped there.”

Denmark's Nationalbanken cut its deposit rate to minus 0.2 percent in July, stepping up a battle to prevent the krone from strengthening beyond its currency band as the nation's haven status attracts investors. Swiss National Bank Vice President Jean-Pierre Danthine said in June that charging for deposits “is a measure we could consider if circumstances warrant it.”