MBK Partners, a Seoul-based private-equity firm, launched a $1.5 billion tender offer to secure a controlling stake in nonferrous-metal producer Korea Zinc, sending the smelter’s stock to a record high

​MBK Partners, a Seoul-based private-equity firm, launched a $1.5 billion tender offer to secure a controlling stake in nonferrous-metal producer Korea Zinc, sending the smelter’s stock to a record high WSJ.com: US Business