Michael Saylor's MicroStrategy (NASDAQ:MSTR), Coinbase Global (NASDAQ:COIN), Riot Blockchain (RIOT) and a raft of other crypto-focused stocks are sliding in Thursday premarket trading, as bitcoin (BTC-USD) and ethereum (ETH-USD) edge down over the past 24 hours. The slump in crypto stocks comes as stock futures imply a weaker open, giving up Wednesday's gains after the Federal Reserve made a bold move to hike its policy rate by 75 basis points to bring down inflation. Still, with the exception of bitcoin (BTC-USD) and ether (ETH-USD), a slew of major cryptos appear unbothered about rising equity volatility. Cryptos in the green: cardano , ripple , solana , dogecoin , polkadot and avalanche . While bitcoin is drifting down to $21.1K as of shortly before 9:30 a.m. ET, it's still elevated from its lows of $20.1K on Wednesday. Likewise, ether is dipping to $1.11K but still higher from its lows