A historic event took place moments ago when Mark Johnson, the global head of cash FX at HSBC was arrested at JFK airport for his role in a "conspiracy to rig currency benchmarks", and specifically for frontrunning customer orders. He is the first person charged by the US in the ongoing FX rigging probe. As Bloomberg reports, a "senior manager at HSBC Holdings Plc was arrested in New York for his role in a conspiracy to rig currency benchmarks, according to two people familiar with the matter, becoming the first person to be charged in the Justice Department’s three-year investigation...