The leu opened at 4.250/4.255 to the euro, compared to 4.258/4.260 at closing the day before.
Within the first hour, the leu continued to strengthen, on low volumes, and at 10:00 local time (GMT0700), it was trading at 4.247/4.250 against the European coin.
The central bank computed Tuesday a leu to euro reference of 4.2579 units, stronger than the previous reference of 4.2669 units.
On the money market, overnight rates rose to 4.75%-5.25% a year, from 2.13%-2.62%, as Wednesday is the start of a new interval in which banks need to make their minimum required reserves.