The US crackdown on Vladimir Putin's inner circle over Russia's "destabilising activities" has prompted investors to abandon energy and mining giants controlled by oligarchs, wiping billions off their fortunes.
EN+, the London-listed hydropower and aluminium conglomerate majority-owned by Oleg Deripaska, once Russia's richest man, was in disarray today as its shares plunged by 42 per cent and it emerged two members of its board had quit.
Trading was briefly suspended in the afternoon after the company, which floated in November, admitted it faced a "materially adverse" impact from the new US sanctions, according to the Daily Telegraph.
The personal wealth of Mr Deripaska and his family is estimated to have taken a £2 billion ($3.8b) hit from the EN+ share price collapse alone. Deripaska owns a 65.2 per cent stake in EN+ and his family have a further 11.4 per cent, according to documents filed when EN+ was listed.
Pressure was mounting on the company's chairman, the former Conservative energy minister Lord Barker, as other non-Russians quit the board.