On the 28th, as SK Hynix announced "record-breaking earnings," the KOSPI closed trading having surpassed the 6,000 mark. SK Hynix rose 10% and Samsung Electronics rose over 9%, leading a "V-shaped rebound." The KOSPI closed at 6,012.44, up 374.10 points (6.63%) from the previous trading day. The index started at 5,763.85, up 125.51 points (2.23%) from the previous day, and crossed the 5,700 mark as investor sentiment in the semiconductor sector …