Digital Coins Tumble in January Amid Facebook, Tether Concerns
- Bitcoin heads for worst monthly slide in almost four years
- CFTC in U.S. said to send subpoenas to Bitfinex, Tether
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For cryptocurrency investors, January is turning into a month to rue.
Digital coins have mostly slid this week, with Bitcoin heading for its worst monthly decline since February 2014, as U.S. regulators ramp up their scrutiny of one of the world’s largest digital currency exchanges while Facebook Inc. is banning ads tied to the industry.