The primary driver behind the 73.9% market-implied probability against closing the Paramount-Warner Bros. Discovery deal by year-end 2026 is the July 2026 court stipulation halting consummation until June 1, 2027, or shortly after resolution of the 12-state antitrust lawsuit and related Writers Guild litigation. Although the DOJ approved the $110 billion transaction in June, shareholders greenlit it in April, and the FCC recently cleared foreign ownership stakes, the states’ suit over reduced competition in theatrical distribution, cable, and streaming has produced a March 2027 trial date and a no-close order. Paramount has satisfied most regulatory conditions across nearly 70 jurisdictions and signaled readiness to close, yet the ticking fees, $7 billion breakup fee risk, and extended timeline keep near-term completion improbable. Traders view the litigation as the decisive swing factor in this closely watched media consolidation.