KOSPI gave up most of its early gains Wednesday as investors adopted a wait-and-see stance on the final trading day before the Chuseok holiday. The benchmark index closed at 7,080.92, up 0.9 percent from the previous session. The index opened nearly 2 percent higher but gave up most of its gains, extending a recent pattern of strong openings followed by weaker trading later in the day. Foreign and retail investors sold a net 534.4 billion won ($393.7 million) and 1.42 trillion won in shares, respectively. Institutional investors bought a net 320.3 billion won. SK hynix rose 1.2 percent to close at 1,862,000 won, while Samsung Electronics gained 3.25 percent to finish at 285,500 won. U.S. President Donald Trump said at the U.N. General Assembly that the U.S. delegation had held talks with Iranian officials for about three hours. Iran also said it could reopen the Strait of Hormuz if the U.S. naval blockade is lifted, helping stabilize international oil prices and improve investor sentiment in early trading. However, with the Korean stock market closed for the Chuseok holiday on Thursday an