Crypto stock gain premarket as Bitcoin hits all-time high
** Shares of cryptocurrency firms rise premarket as Bitcoin
hits an all-time high of $23,000 against the U.S. dollar
** Cryptocurrency miners Riot Blockchain RIOT.O and
Marathon Patent Group MARA.O rise 7.3% and 20.4%, respectively
** Online retailer and blockchain co Overstock.com Inc
OSTK.O up 2.2%
** Bitcoin BTC=BTSP hits a record high of $20,000 vs the
U.S. dollar on Wednesday
** Ehtereum ETH= is up 5.1% at $661.3
(Reporting by Sohini Podder in Bengaluru)
((sohini.podder@thomsonreuters.com;))