Investors appeared relieved by the gross domestic product figures published on Friday, which showed that the Greek economy had grown marginally in the second quarter of 2016 on a quarterly basis.
This was seen as the key reason behind the Athens Stock Exchange general index rising for a fourth day in a row.
It increased by 0.66 percent to close at 576.12 points.
Folli Follie shares were the biggest risers, with an increase of 6 percent, followed by retailer Jumbo on 3.75 percent.
Terna Energy slipped 2.19 percent, followed by a 1.79 percent decline for Aegean.
Overall, 42 stocks rose, 35 declined and 15 remained unchanged.
Turnover remained fairly low, reaching just 20.64 million euros.