QuantumScape stock, traded on NASDAQ as QS, has seen a significant shift in investor sentiment after years of speculation. Shares gained 100.8% in 2025, according to S&P Global Market Intelligence data, following a period where the stock had declined 80% since its late 2020 IPO.
The company has taken concrete steps toward commercializing its solid-state battery technology. In July 2025, QuantumScape announced an expanded collaboration and licensing arrangement with Volkswagen Group's battery company, PowerCo. This agreement aims to expedite development of QuantumScape's battery pilot line in California.
Other agreements announced last year include partnerships with glass and ceramics maker Corning and electronics manufacturer Murata Manufacturing for high-volume production of ceramic separators.
QuantumScape achieved another key 2025 goal in the third quarter by beginning shipments of initial battery cell samples to customers for testing. The company's batteries are designed to offer higher energy density, quicker charging, and enhanced safety compared to traditional lithium-ion cells.
At its San Jose, California headquarters, QuantumScape is establishing a highly automated cell-production pilot line called the Eagle Line. The company has also revealed a new joint development agreement with an automotive OEM customer.
Despite these developments, QuantumScape remains a risky investment according to market observers. The Motley Fool Stock Advisor analyst team recently identified what they believe are the 10 best stocks for investors to buy now, and QuantumScape was not among them.