Bitcoin’s plunge weighs on crypto-currency shares

Companies that have seen their fortunes and share prices soar with the crypto-craze are now facing a little bit of a reality check.

As Bitcoin slumped up to 20% to almost $11,000 (€8,990m), and its biggest rival Ethereum dropping 23%, and Ripple tumbling up to 33%, firms that touted their links to the burgeoning blockchain industry, including Riot Blockchain, Overstock.com and DPW Holdings, have seen their shares tumble.