The Spanish banking industry is preparing for a potential resolution of a protracted regulatory dispute, with the Spanish Bankers' Association (AEB) expressing confidence that the National Commission on Markets and Competition (CNMC) will close its investigation into six major lenders.

The probe, which has targeted six banks listed on the Ibex 35, centers on allegations of anti-competitive practices in the mortgage lending market, often referred to as the 'mortgage war.' The AEB's latest stance suggests that the regulator is nearing a decision to archive the case, signaling a possible end to the legal uncertainty that has hung over the sector.

For investors, the closure of the investigation would remove a significant reputational and financial risk for the affected institutions.

The banks involved have faced scrutiny over their pricing strategies and market conduct, with the potential for substantial fines if the CNMC were to find violations.

A decision to drop the case would likely be viewed as a positive development for the sector's stability and profitability.

The outcome of the probe has been a point of contention between the banking industry and regulators, with the AEB consistently arguing that the banks' practices were competitive and in the best interest of consumers.