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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 and the Korea Times report. Hoban Construction emerged as the top shareholder, and Hoban has notified the Fair Trade Commission of a business combination after acquiring more shares, KBS World reports. However, Korean Air said it cannot confirm Hoban has overtaken Cho, citing a lack of information on the scale of shareholdings, the Korea Times reports. Business Korea notes uncertainty over management rights, with assessments that a dispute with Hoban has become slim after Cho purchased additional stakes, and speculation that Hoban may seek a board seat.