SK securities firms have seen their overall net profits between April and September nosedive by 62% to KRW251bn ($237m) compared with KRW675bn ($635m) recorded last year during the same period, according to a report from the South Korean Financial Supervisory Services (FSS). According to the report, the main reason behind the reduced profit was the revenue fall from self-account transactions caused by the appreciation of interest rates. Despite the general increase in net profit in the equity b