QuantumScape is an electric battery start-up that went public through a special purpose acquisition company back in 2020. The company is trying to create a solid-state battery for electric vehicles (EVs), which would help improve range and efficiency over existing battery types. The EV market is set to become worth hundreds of billions of dollars this decade, a lot of which will be spent on batteries, so investors were extremely optimistic. Why do you think that the market fell in September ?

