Buffett’s Berkshire Is Being Packaged Into a Leveraged ETF

Warren Buffett created Berkshire Hathaway Inc.’s Class B shares almost 30 years ago to stymie money managers who sought to split the high-priced conglomerate’s stock.

Warren Buffett

Photographer: Houston Cofield/Bloomberg

One of South Korea’s largest retail brokerages now plans to package the Class B shares into an exchange-traded fund turbocharged with derivatives, another move that Buffett might not like.

Kiwoom Securities Co. teamed up with Milwaukee-based Tidal Investments to form an ETF designed to provide 200% the daily performance of Berkshire, according to a regulatory filing.

Single-stock ETFs such as this have been sweeping the fund world, using leverage that amps up ...