EXCLUSIVE: South Korean FX authorities bought $20 bln in repatriated SK Hynix funds, source says ↧ ↧ EXCLUSIVE: South Korean FX authorities bought $20 bln in repatriate... South Korean foreign exchange authorities bought about $20 billion in U.S. dollars that SK Hynix sold after its $26.5 billion American depositary receipt listing ​in July, a source with direct knowledge of the matter said on ‌Wednesday.