Coinbase Global Inc. (NASDAQ:COIN) shares traded up 5% in premarket Friday after CEO Brian Armstrong went viral for reading out live prediction market bets during the company's third-quarter earnings call.Armstrong's On-Air Move Goes ViralArmstrong ended the Q3 call by opening a prediction market tracking what he might say on the broadcast — and proceeded to read it aloud line by line. The moment drew laughter and applause from listeners on X.Anthony Pompliano, investor and podcast host, posted that Armstro ...