Asiana Airlines, Inc. (KOSE:A020560) saw its stock jump as much as 23% on July 17, 2018 after local media reported a possible takeover by SK Group, before erasing gains after the conglomerate denied having any interest in the airline business. Before market open on July 17, 2018, News Tomato reported SK Group was considering taking over Asiana, citing an unidentified senior official at the group. Asiana's share price subsequently rose to as much as KRW 5,130.

About an hour into the trading day, SK Holdings Co., Ltd. (KOSE:A034730) issued a regulatory filing denying any interest in Asiana, with SK Group Chairman, Chey Tae-won later repeating the denial to reporters. Asiana's stock dropped back, eventually closing up 3%.