Polymarket is under scrutiny for potential insider trading following unusual betting patterns observed on its platform. The decentralized prediction market has attracted regulatory attention as authorities investigate the possibility of illicit activities influencing market outcomes. In a separate development, lawmakers are questioning Howard Lutnick's connections to Tether, raising concerns about transparency and regulatory compliance. Meanwhile, Marathon Digital Holdings is set to acquire a $1.5 billion power plant, marking a strategic move to bolster its infrastructure for artificial intelligence applications.