Biggest ETF outflows in more than a year warn of China's stock rally

Stock ETFs in Shanghai and Shenzhen saw a combined $4.2 billion pulled out in the month ended Monday, according to Bloomberg data. That's more than investors put into the funds in the previous two months.

Funds with the biggest outflows this month include the CSI 500 ETF, which lost $977 million, and the Huatai CSI 300 ETF.