Sono Group is trading at $2.45, up 10.93%; no clear explanation for the after-hours move has been identified. - On October 1, Sono Group closed at $2.21 after a sharp 97.32% regular-session gain; the after-hours price was higher still. - An October 1 report said Alpine Fox disclosed a 21.5% stake, and the filing was linked to a strong regular-session rally. - No October 1 company press release was identified. The filing may explain daytime interest but does not establish the after-hours gain’s cause.