"The SNB has for so long been in the ultra-dovish camp," said Francesco Pesole, a currency strategist at ING. "If even they are hiking, it's sending a message to markets that central banks are looking at this summer as their last chance to do something about inflation before we hit a global slowdown."
The Swiss franc rose 1.8 per cent against the euro on Thursday to around €0.98.
Europe's regional Stoxx 600 share index, which had rallied on Wednesday after the European Central Bank promised a new mechanism to support weaker eurozone nations from rising interest rates in the bloc, closed 2.5 per cent lower.
Sterling added 1.4 per cent against the dollar, bouncing back from earlier declines. The Bank of England on Thursday lifted its benchmark interest rate by 0.25 percentage points to 1.25 per cent.
Ahead of the announcement, investors had been divided over whether they expected a quarter-point or half-point rise.
UK government debt prices were down after the decision, with the 10-year gilt yield up 0.05 percentage points on the day at 2.51 per cent, as the BoE warned UK inflation might rise above 11 per cent before the end of the year. Bond yields rise when prices fall.
Germany's 10-year Bund yield rose 0.07 percentage points to 1.71 per cent, trimming a more sizeable move earlier in the day.
The ECB had said on Wednesday that it would "accelerate the completion of the design of a new anti-fragmentation instrument" to support the eurozone's most indebted nations.
"They have a plan to develop a plan, but the market wants more detail," said Willem Sels, global chief investment officer at HSBC's private bank.
"It was good news that the ECB reacted," said Nadège Dufossé, head of cross-asset strategy at fund manager Candriam, "but we have nothing new".
© Financial Times