The Swiss franc fell further against the euro on Wednesday, trading at an 11-week low as moves by Switzerland's two biggest banks to pay negative interest rates on franc deposits made by rivals sapped appetite for the currency. The franc was down 0.1 percent against the euro compared to the New York close to trade at 1.2139, having fallen to an 11-week low of 1.2153 at one point on Wednesday.

Against the dollar, the franc rose 0.1 percent on the back of euro strength, with the single currency boosted by efforts to tackle the debt problems of Greece and Spain. As part of measures to shield the franc from investors seeking a safe-haven from the euro zone debt crisis, the Swiss National Bank has kept its target rate for the three-month Libor at 0.00-0.025 percent.

Copyright Reuters, 2012