Vladislav Klyushin

In the days before Christmas, U.S. officials in Boston unveiled insider trading charges against a Russian tech tycoon they had been pursuing for months. They accused Vladislav Klyushin, who'd been extradited from Switzerland on Dec. 18, of illegally

Five Russians including a Kremlin-linked businessman now in US custody carried out a vast insider trading scheme which allowed them to profit from corporate information stolen through hacking, US authorities said.

In the days before Christmas, U.S. officials in Boston unveiled insider trading charges against a Russian tech tycoon they had been pursuing for months. They accused Vladislav Klyushin, who'd been extradited from Switzerland on Dec. 18, of illegally

Five Russians including a Kremlin-linked businessman now in US custody carried out a vast insider trading scheme which allowed them to profit from corporate information stolen through hacking, US authorities said.