LONDON, Sept 21 (Reuters) - The Swiss franc fell by the most against euro since the March banking crisis on Thursday, after the Swiss National Bank unexpectedly held interest rates steady at 1.75%, against forecasts in a Reuters poll that forecast a 25-basis point hike.
The euro was last up 0.7% against the franc EURCHF=EBS to 0.9651 francs, set for its biggest one-day jump since the point at which beleaguered investment bank Credit Suisse was taken over by rival UBS UBSG.S .
The U.S. dollar rose 0.9% to 0.9066 francs CHF=EBS , its biggest one-day jump since July 27.
