Markets & Economy QuantumScape Is Down 96% From Its High. Is 2027 Finally the Solid-State Battery Year? September 2, 2026 · 3:40 pm 1 sources Image: Yahoo Finance ad slot · in-content video 16:9 Coverage More coverageQuantumScape Is Down 96% From Its High. Is 2027 Finally the Solid-State Battery Year?Yahoo Finance · September 2, 2026 15:40