The Swiss Economic Institute KOF released its leading indicator for Switzerland on Wednesday. The KOF leading indicator declined to 100.4 in September from 101.2 in August, missing expectations for a decline to 100.9. July's figure was revised up from 100.7.

According to the institute, the outlook for the Swiss economy remained unchanged since August.

"Overall, slightly positive tendencies in the international environment are counterbalanced by slightly negative developments primarily in the manufacturing as well as construction sectors. With the indicators capturing tendencies in domestic consumption and banking sector stabilising at their previous readings, the overall result is a minor decrease in the Barometer," the KOF said.