The Moscow Exchange, Russia's largest exchange, plans to launch cryptocurrency trading in December. Interfax reported on Thursday, citing senior exchange executives, that the exchange has begun testing cryptocurrency trading with professional market participants. Retail investors would be limited to Bitcoin, Ethereum and Tether, within a limit of 300,000 rubles ($3,582.28). Qualified investors will be able to purchase all cryptocurrencies traded on the exchange. The planned launch follows a law on digital currencies and digital rights that came into force in September.