The boss of JP Morgan, Jamie Dimon, has warned global markets not to underestimate current risks, as the US banking giant hiked its provisions for bad loans. The world’s most influential banker said that whilst the US economy had remained “resilient” and consumer and business trends were “generally healthy,” ongoing risks persisted. “Markets seem to under-appreciate the potential hazards – including from complex geopolitical conditions, the risk of sticky inflation and elevated asset prices,” Dimon…