Investor sentiment in the eurozone reached a 10-year high in October, in the first investor mood reading after the elections in Germany and the independence vote in Catalonia, a Frankfurt-based independent research institute said.

Sentix's overall index for the euro area increased to 29.7 points in October from 28.2 in September. Investors' assessment of the current situation in the eurozone also improved, rising to 41.8 in September from 39.8 in the previous month. The index measuring expectations for economic development increased to 18.3 from 17.3.

The overall index for Germany rose to 37.7 in October from 34.0 in the previous month, as the indexes for current situation and expectations increased from the previous month.

Meanwhile, investor sentiment in the U.S. also improved, with the overall index rising to 22.3 in October from 17.1 in the previous month, sentix said.