Coinbase shares fell 3% Friday despite a partnership announcement with Marqeta to bring stablecoin-backed cards to businesses worldwide. Marqeta said the expanded relationship will let crypto-native and traditional businesses issue the cards. Coinbase handles stablecoin custody, conversion and settlement, while Marqeta handles card issuance, payment processing, and bank and network relationships. Coinbase shares slipped below both their 50-day and 100-day exponential moving averages near $179, suggesting the recent rebound lost momentum.