The leu opened at 4.342/4.344 per euro, slightly stronger from 4.3465/4.348 per euro at Friday closing.
In the first hour, the leu extended gains, trading at 4.34/4.3415 to the euro in a quiet market. It later changed trend and slided to an early low of 4.348 units, before returning to the opening levels.
The other currencies in the region were slightly higher at the opening, but turned to losses by mid-day as the European markets slided into negative territory.
On the money market Monday morning, overnight rates rose to 5.5%-6% a year, on reduced leu supply, following central bank interventions in recent weeks to support the local currency, dealers said.