AMTM is trading at +4.98% now at $21.20 after a broad early-session rebound. No major AMTM-specific announcement, earnings update, or analyst action appears in the available sources, so the move is not clearly tied to company news.
The most likely backdrop is firmer market sentiment, with major U.S. indices up about 0.6%-0.8% and risk appetite improving. AMTM also remains a volatile name after recent swings around the $20 area.