A survey by Sentix Research Group revealed that investor sentiment in the Euro zone had turned positive in September. This was the first time that the outlook was upbeat in more than two years.

According to the survey, the index tracking investor sentiment in the Euro zone was +6.5 points. This was an increase from the -4.9 points it registered in August. The increase was also the highest the Euro zone had registered since May 2011. The reading even exceeded a poll conducted by Reuters for an increase to -2.8. It was also the first positive rating for the zone since July 2011.

In a statement, Sentix Analyst Sebastian Wanke said, "This is the second strongest rise of the indicator since its start in 2003. It's a stunning coup for the euro zone."

The research group surveyed 893 investors from September 5 to 7. Sentix said the investors were more upbeat not only about the current business climate but about their outlook for the Euro zone in the next six months.