QuantumScape’s EV Battery Breakthrough Sends Stock Soaring – Will the High-Voltage Hype Last?
QuantumScape’s stock went into “blast-off mode” in late September and early October 2025, buoyed by major developments in its technology and partnerships. After trading flat around $12–$13 through mid-September, QS suddenly broke out on successive news catalysts: it jumped 18% on Sept 18, then another +18.4% on Oct 1, ultimately hitting an intraday high of $16.49 by Oct 3 ts2.tech. The Oct 3 close at $15.92 capped a stunning ~30% gain in one week and a ~172% year-to-date rise ts2.tech.