Moderna shares jump 12% in premarket trading

The striking part is how little is on the record: a double-digit premarket move with no stated catalyst is a sentiment event, not a fundamental one. Premarket gaps of this size often reflect thin liquidity and headline-driven positioning rather than a reassessment of the business, so the cash-session open is where the move either holds or fades. Whether the gain survives the full session, and whether any explanation surfaces afterward, is the open question worth tracking.