Casinos in Macau have weakened this year after junket operators, those who bring wealthy gamblers from mainland China, were put under the microscope as the Las Vegas Sands’ Chinese unit screened against money laundering and other wrongdoing. [Gaming ETF Hits Rough Patch as Sands China Looks at Junket Operators]

BJK includes heavy weights toward Hong Kong-listed Chinese casinos, including Sands China 6.3%, MGM China HOldings 5.2% and Wynn Macau 3.7%. China makes up 17.5% of BJK’s country weight.

Market Vectors Gaming ETF

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Max Chen contributed to this article.