[Japanese and South Korean Stocks Open Sharply Higher; Middle East Ceasefire Lasts Two Weeks] The Nikkei 225 index opened 952.10 points higher, or 1.78%, at 54,381.66 on Wednesday, April 8. The South Korean KOSPI index opened 329.13 points higher, or 5.99%, at 5,823.91 on Wednesday, April 8.