QuantumScape Stock Whipsaws After Q1 Update as Solid-State Battery Developer Targets AI Data Centers
San Jose, California, April 23, 2026, 11:07 PDT QuantumScape shares swung sharply Thursday. The solid-state battery maker announced it fired up its Eagle Line pilot production line, kicked off initial QSE-5 cell production, and pulled another top-10 automaker into joint development. The stock started at $9.65, climbed as high as $10.03, then tumbled to $7.17 by 10:47 a.m. Pacific—falling below the previous close.