The iShares China Large-Cap ETF has attracted a net $518 million in August, putting it on track for the biggest monthly inflow since $1.34 billion was added in December 2012. The ETF, which has Tencent Holdings Ltd. and China Mobile Ltd. among its 25 stocks, reached an 18-month high on Aug. 13 after rallying 26 percent from a March low. The Bloomberg China-UNS Equity Index slipped 1.2 percent yesterday, cutting its advance since the end of July to 2.5 percent. The Hang Seng China Enterprises Index has risen 1.1 percent this year after slumping 5.4 percent in 2013.