Together, the two banks control about 49 percent of banking deposits in the state and more than 60 percent in Kings County, which encompasses Seattle, Senator Niemi said.

An unlimited guarantee is offered by the government for all domestic banking deposits.

Mr. Cavallo, a member of a small center-right party, is especially unpopular because of an order he issued in December to freeze banking deposits, a move followed by a 66 percent devaluation of the Argentine peso.

But the value of these deposits as a percentage of total banking deposits has been declining steeply as these companies and families voluntarily convert more money into yuan than required.

Variables like income level, banking deposits, retail activity, small-business concentration and competition can be tracked.

Thanks primarily to a series of government-sanctioned mergers, they now control almost forty per cent of the country's total banking deposits and two-thirds of its credit cards, and issue half of all mortgages.

Still, more than half of the banking deposits in the New York market are controlled by Citibank or Chase, according to SNL Securities, a banking research firm.

"Citigroup is the biggest financial services conglomerate in the country, but in terms of retail banking deposits, they aren't the largest," said Thomas Goggins, manager of the John Hancock Financial Industries Fund.

The bank is a large financial institution in Zambia, accounting for 17% of commercial banking assets and about 16% of commercial banking deposits in the country in 2012.

The new BankAmerica will control about 8.3 percent of the nation's $3.5 trillion of federally insured banking deposits, coming the closest of any bank to the 10 percent cap on national market share mandated by Federal banking regulations.