Buffett’s Berkshire is being packaged into a leveraged ETF

One of South Korea’s largest retail brokerages, Kiwoom Securities Co., now plans to bundle Class B shares into an exchange-traded fund enhanced with derivatives—an approach Warren Buffett might disapprove of. Kiwoom has partnered with Milwaukee-based Tidal Investments to launch an ETF aiming to deliver 200% of Berkshire’s daily performance, according to a regulatory filing.