QuantumScape stock just took a nosedive — plunging nearly 17% in a single day — leaving investors scrambling for answers. The solid-state battery startup, once hailed as a potential game-changer in the electric vehicle (EV) revolution, had just ridden a massive wave of enthusiasm around its new “Cobra” separator technology. But Monday’s dramatic sell-off shows just how fragile that momentum can be. So, what triggered this sudden reversal, and what does it mean for the future of this high-profile EV battery maker?
