Shares of Alibaba Group Holding Ltd. BAB,
were on track for their steepest daily decline on record Thursday, tainting exchange-traded funds with major holdings of the Chinese e-commerce company. The KraneShares CSI China Internet ETF KWEB,
which has an 8.3% stake in Alibaba shares, fell 3.7% in the last hour of trading in New York, while the SPDR S&P China ETF GXC,
and the Franklin FTSE China ETF FLCH,
both lost 3.1%. The iShares MSCI China ETF MCHI,
which, according to FactSet data, has the largest stake of US-based ETFs at 16.6%, was down only 2.6%. Alibaba shares took a hit when Chinese regulators launched an antitrust investigation into the company and are on track to close their lowest level since July, according to Dow Jones Market Data.