ClearOne is trading at $4.77, down 6.47% after-hours; the cause remains unclear. - It closed September 28, 2026, at $5.10, up 47.83% for the day, with reported activity reaching roughly 23.7 million shares. - Coverage found no clear company-specific announcement behind the surge; no confirmed after-hours catalyst emerged. - The Cortigent merger agreement, expected to close in October, is prior news. Broader markets fell, but evidence does not link them to ClearOne’s move.