SEOUL :South Korea plans to unveil incentives for long-term stock investors, while making efforts to ensure foreign exchange stability, its finance minister said on Wednesday. Since taking office in June, the administration of President Lee Jae Myung has vowed various reforms to boost the domestic stock market, driving a rally in the benchmark index this year. The won currency has weakened 0.8 per cent this week to trade at 1,464.8 a dollar on Wednesday, after last week's sharp gains following