KOSPI Jumps 18%, Yen Plunges After FX Intervention, Apple Down, Amazon Up

Asian markets saw sharp moves, with South Korea's KOSPI index closing 18% higher. Meanwhile, the Japanese yen weakened dramatically, losing five big figures against the dollar after reported FX intervention.

In US equity pre-market trading, Apple shares were down while Amazon gained. The moves come as investors head into the weekend with heightened geopolitical tensions.