China Stocks Have Biggest Weekly Loss in Year on Margin Risk

China’s stocks fell for a fourth day, capping the biggest weekly decline in a year, amid concern regulatory scrutiny of margin lending and tepid economic growth will curb the benchmark index’s world-beating rally.

China Life Insurance Co. and China Pacific Insurance Co. slid at least 5 percent after Great Wisdom said regulators will check insurers’ margin trading businesses. Leshi Internet Information & Technology Co. dropped 4.8 percent, paring this month’s rally to 49 percent. CSR Corp. and China CNR Corp. both lost 7.9 percent after Huatai Securities Co. said it would stop lending shares of the train makers for short-selling.