Crypto stocks advance as bitcoin climbs back above $70,000

Shares of cryptocurrency and blockchain-related companies advance premarket, as bitcoin BTC= hits more than three-week high

The world's biggest cryptocurrency gains 4.8% to $71,277.82, while ether ETH= rises 5.1% to $2069.30

Cryptocurrency exchange Kraken's banking unit gains access to the U.S. Federal Reserve's payments system, underscoring the industry's growing foothold in mainstream finance

Crypto exchange Coinbase Global COIN.O rises 4.8%, while blockchain farm operator Bitfarms BITF.O adds 2.6%

Crypto miners: MARA Holdings MARA.O, Riot Platforms RIOT.O, and Bit Digital BTBT.O gain between 4% and 6%

BTC hoarder Strategy MSTR.O advances 5.9%, while ether hoarder Bitmine Immersion Technologies BMNR.A gains 4.8%

Shares of retail trading platform Robinhood HOOD.O, which offers trading in crypto tokens, up 2.9%

ProShares Bitcoin Strategy ETF BITO.P adds 3.8%, iShares Bitcoin Trust ETF IBIT.O up 3.7%

BTC down more than 40% from its all-time high in October amid ETF outflows and investors unwinding leveraged positions