Swiss National Bank chairman Martin Schlegel stated on Thursday that the SNB doesn't like negative rates but will implement them again if necessary. The official remarked that today's rate cut has lowered the probability of negative interest rates, though he acknowledged their effectiveness in monetary policy. Schlegel noted that negative rates in 2015 did lessen the attractiveness of the Swiss franc.
SNB's boss also emphasised that the Swiss central bank evaluates currency dynamics using a basket of currencies to assess the franc's effective rate, rather than just fixating on the euro.