Valens is trading at $1.86, up 5.85%, with no specific catalyst identified for its after-hours gain. - Valens’ investor news page lists no October 8 announcement; its latest listed release is dated September 22. - Semiconductor stocks faced pressure as rising Treasury yields and surging oil revived inflation concerns. - SOXX fell more than QQQ in the session, but sector weakness does not directly explain Valens’ gain.