Myseum shares more than doubled on Thursday after the social media platform provider became the latest company to unexpectedly refocus efforts on artificial intelligence . The penny stock surged more than 150% in midday trading to above $3 a share. Myseum — which surpassed the $5 mark at one point in the trading day — climbed to its highest levels in more than a year and is on track for its best day since early 2025. The New Jersey-based company announced Wednesday that it would change its name