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Hoban Group has become the largest shareholder of Hanjin KAL, the holding company of Korean Air, overtaking Hanjin Group Chairman Cho Won-tae and his related parties, according to a regulatory filing on Wednesday, Yonhap reports. The shift marks a significant change in ownership, though Korean Air has said it cannot confirm the scale of Hoban's stake, citing a lack of information. Hoban has notified the Fair Trade Commission of a business combination after acquiring more shares, and shares in Hanjin KAL soared 25.5% as the battle for management control reignited. Business Korea notes that assessments suggest the possibility of a management dispute has become slim after Cho purchased additional stakes, though uncertainty over management rights direction remains.