Korea Zinc's shares experienced a significant decline, plunging nearly 30% following the announcement of a $1.8 billion share issuance. The stock fell as much as 23% on the second day of trading after reports surfaced that South Korea's financial watchdog is considering a review of the company's share sale plan. The regulator indicated there is a 'high likelihood' that the case may involve unfair trading practices. This scrutiny comes ahead of a scheduled briefing by the watchdog, which has further fueled investor concerns regarding the legitimacy of the share issuance.