There were 6,668 enterprise openings during the time.
Examined by industry, the number of enterprise openings was the highest in trade, and by region in Uusimaa.
Enterprise openings accounted for 1.9% of the total stock of enterprises in the third quarter of 2013.
In the second quarter of 2013, the number of enterprise closures was up by 5.8% on the corresponding quarter of the year before, according to the data.
The enterprise closures increased most in the industry of trade, and by region in Uusimaa.
The number of enterprise openings decreased most in construction (-172) compared with the third quarter of 2012.
