** Shares of cryptocurrency and blockchain-related firms
fall premarket as Bitcoin BTC=BTSP drops 5.1% to $40,691.8
** Bitcoin slid below the $40,000 mark to hit a 3-1/2-month
low, before recouping some losses, after China imposed fresh
curbs on transactions involving cryptocurrencies urn:newsml:reuters.com:*:nL2N2N60Q4
** China, a major hub for crypto mining, bans financial
institutions, payment firms from providing services related to
crypto transactions; also warns investors against speculative
trading
** Bitcoin bank Silvergate Capital Corp SI.N down 4.2%
before the bell; cryptocurrency miners Riot Blockchain RIOT.O
and Marathon Digital Holdings MARA.O 7.8% and 7.4% lower,
respectively
** China-based Future Fintech Group Inc FTFT.O slips 1.4%
** Shares of Overstock.com OSTK.O , an online retailer and
blockchain tech investor, down 1.3%; shares of MicroStrategy Inc
MSTR.O , a BTC buyer and business intelligence software firm,
4.6% lower
** China-focused SOS SOS.N drops 5%, while U.S.-listed
shares of crypto exchange Coinbase Global decline 3.7% before
the bell
** In Frankfurt, Coinbase's German listing 1QZ.F slides
more than 6.3%, hitting a record low
** YTD, BTC has risen ~40%, broadly lifting the market
values of crypto-related stocks with it
(Reporting by Aaron Saldanha)
((Aaron.Saldanha@thomsonreuters.com; +91 9810644993; Reuters
Messaging: Aaron.Saldanha@thomsonreuters.com@reuters.net))