Crypto stocks track weak bitcoin lower  

** Shares of cryptocurrency- and blockchain-related companies fall in premarket as bitcoin slips** Bitcoin , the world's largest cryptocurrency, down 0.5% in session to trade at a little under the $85,000 mark; ether down 2.2% ** Cryptocurrency exchange Coinbase Global falls 1.6%; miners Riot Platforms , MARA Holdings shed 2% and 1.8%, respectively, while U.S.-listed shares of Hut 8 down 2%** Bitcoin miner CleanSpark down 2.4%, while bitcoin bull MicroStrategy falls 1.7%** iShares Bitcoin Trust and ProShares Bitcoin Strategy ETF nearly flat ** Bitcoin has lost nearly 9% of its value in 2025