The number of investors who think a country will leave the euro zone soon has dropped by two thirds in the year since the head of the bloc's central bank promised to safeguard the currency, a survey published on Monday showed.
The July poll of 888 investors by German research group Sentix showed 23.75 percent of participants foresaw at least one state quitting the 17-nation bloc within the next year.
Last July's euro break-up index reading was 73 percent.
That survey coincided with the pledge by European Central Bank President Mario Draghi to do "whatever it takes" to save the euro.
"The fears of investors, which were expressed in that high July 2012 figure, prompted Draghi to go on the offensive and the index fell significantly in the months after his announcement, so you can see it had a real effect," Manfred Huebner, managing director of Sentix, told Reuters.
However, economic stresses in the euro zone remain significant. Sentix's most recent breakup reading rose slightly from June and the risk of contagion hit a record high.