Earlier, it was reported that United Company Rusal, owned by Oleg Deripaska, who is under the US sanctions, on the Hong Kong stock market posted a message that the company can announce a technical default.
They follow a diplomatic crisis sparked by the poisoning of former spy Sergei Skripal in Salisbury.
Aluminum stocks rose as giant Russian producer United Company Rusal warned on Monday that Trump administration sanctions could land the company in technical default of debt obligations.
The stock fell tumbled 49 per cent to HK$2.38 at around 0710 GMT, according to pricing from the Hong Kong Exchanges & Clearing website. Its market value in London has been slashed by $2 billion.
EN+, the aluminium to hydropower firm controlled by Mr Deripaska, dived by 25% in London.
The new sanctions promise to make it much more hard for the companies to do business overseas. Any assets the seven have under USA jurisdiction have been frozen and U.S. nationals are forbidden from doing business with them. It was mentioned that the US sanctions are highly likely to will have a negative impact on the business of the company and its development.
The two companies did not respond to requests for additional comment on Monday.
US sanctions have already cost some of Russia's dollar billionaires dearly only three days after they were introduced.
The Treasury Department is implementing sanctions authorized by Congress previous year to punish Russian Federation for interfering in the 2016 election.
The White House said targeted sanctions would help to ensure that Russian oligarchs profiting from the Kremlin's destabilizing activities would face consequences.
Rusal and seven other companies linked to Deripaska were the main targets when the U.S. imposed sanctions created to punish Vladimir Putin's inner circle for "malign activity", including support for Bashar al-Assad's government in Syria and interfering with the USA election in 2016. Besides, 21 names were entered in the sanctions list, including Andrey Cherezov, Russia's Deputy Energy Minister.