The Globe and Mail reports in its Wednesday edition that crypto-currency XRP slumped 13 per cent on Tuesday after Coinbase, a major U.S. virtual coin exchange, said it would suspend trading in the digital currency. A Reuters dispatch to The Globe quotes California-based Coinbase saying Monday that it would suspend trading in XRP after the Securities and Exchange Commission last week charged an associated blockchain firm, Ripple, with conducting a $1.3-billion (U.S.) unregistered securities offering. Ripple has rejected the charges, saying XRP is a currency and does not need to be registered as an investment contract. XRP, the third-biggest crypto-currency, hit an intraday low of 20 U.S. cents, its lowest since July. It has slumped by more than half since the SEC move. The move by Coinbase comes as it prepares for a stock market listing, with a confidential application to the SEC to go public. It would be the first major U.S. crypto-exchange to list on the stock market. Coinbase, one of the most well-known crypto-currency platforms, said trading in XRP moved into limit only from Monday, and would be fully suspended on Jan. 19. Regulators around the globe are grappling with how to regulate crypto-currencies.