The Budapest Stock Exchange's main BUX index lost 1.32% to 16,115.36 on Wednesday as OTP Bank shares dropped a sharp 6.80% to HUF 3,360 on turnover of HUF 8.5bn.
Oil and gas company MOL rose 1.03% to HUF 14,700 on turnover of HUF 3.8bn, drug maker Richter advanced 1.23% to HUF 32,600 on turnover of HUF 0.7bn and Magyar Telekom fell 0.21% to HUF 480 on turnover of HUF 0.9bn.
Share turnover amounted to HUF 14.3bn for the session.
The bourse's mid-cap BUMIX index fell 0.73% to 1,370.38.
Major Western European share indices were mixed, with London's FTSE rising 1.40%, Frankfurt's DAX falling 2.61% and the CAC-40 in Paris losing 1.42%.
Elsewhere in the CEE region, Warsaw's WIG-20 rose 0.33% and Prague's PX-50 advanced 2.40%.