South Korea’s government has called an emergency meeting to discuss the trading of cryptocurrencies, and measures on the market will be announced on Friday, a central bank official said on Wednesday. The official declined to give further details, but the announcement underscores how global regulators are grappling with the frenzy over cryptocurrencies, just days after the launch of the world’s first bitcoin futures. Bitcoin-related shares slumped in early trade. Vidente Co Ltd (121800.KQ) and Omnitel Inc (057680.KQ), which hold stakes of South Korea’s biggest bitcoin exchange Bithumb, fell 8.4 percent and 4.9 ... (full story)