Record Bric tradingHeightened uncertainty fuelled heavy buying in emerging markets yesterday, with BM&F Bovespa, the Brazilian stock exchange, enjoying a record 151,121 trades in its derivatives segment. Some 4.6m contracts changed hands, worth a notional amount of R$317bn ($177bn).The previous record of 112,069 trades was set just two days before, on May 4.On Forts, the futures and options segment of the...