Crypto stocks track weak bitcoin lower

** Shares of cryptocurrency- and blockchain-related companies fall in premarket as bitcoin slips

** Bitcoin BTC=, the world's largest cryptocurrency, down 0.5% in session to trade at a little under the $85,000 mark; ether ETH= down 2.2%

** Cryptocurrency exchange Coinbase Global COIN.O falls 1.6%; miners Riot Platforms RIOT.O, MARA Holdings MARA.O shed 2% and 1.8%, respectively, while U.S.-listed shares of Hut 8 HUT.O down 2%

** Bitcoin miner CleanSpark CLSK.O down 2.4%, while bitcoin bull MicroStrategy MSTR.O falls 1.7%

** iShares Bitcoin Trust IBIT.O and ProShares Bitcoin Strategy ETF BITO.P nearly flat

** Bitcoin has lost nearly 9% of its value in 2025