Argentina seized Repsol's controlling stake in YPF in 2012 without payment, claiming the Madrid-based company was not investing enough in the South American country's oil industry.
The move enraged Spain and brought sharp criticism of Argentina from the European Union and the United States.
Repsol representatives and Argentina have recently been negotiating a compensation settlement for the Spanish company. Repsol said in a regulatory filing today it has revalued its 51 percent stake in YPF at USD 5 billion.