China increases support for margin trading

Chinese authorities on Monday boosted support for margin trading, which fuelled a stunning stock market rally before government restrictions triggered a spectacular rout last year.Margin trading, through which investors only need to deposit a small proportion of the value of their trades, potentially generates bigger profits but also exposes them to bigger losses.
It was behind a stock market boom that sent the Shanghai bourse up 150 percent in 12 months, before it plummeted from last June after