Banks have risen to the top of the Athex Composite Index, with Piraeus Bank trading up 6.94 per cent, Alpha Bank rising 4.1 per cent, Eurobank climbing 1.79 per cent and the National Bank of Greece up 1.53 per cent in late morning trading.
The Athex Composite Index rose 2.2 per cent to 691.23.
It follows heavy losses in the first few days of the Athens Stock Exchange resuming trading last week. After five weeks of closure, banks had registered near-30 per cent losses.
Stocks have risen as creditors come closer to finalising a bailout deal, with the possibility of reaching an agreement by Tuesday.
Greek Prime Minister Alexis Tsipras said last week the country was in the final stretch of concluding a deal, which should arrive in time for the country to pay off its €3.5bn debt to the European Central Bank by 20 August, the day the debt matures.
Amid the optimism, however, was some downbeat economic data as industrial production in Greece fell 4.5 per cent year-on-year in June.