Ongoing state antitrust lawsuits, filed in July 2026 by California and 11 other attorneys general, represent the main driver behind the 76.6% market-implied probability that Paramount will not close its Warner Bros. Discovery acquisition by year-end 2026. A federal judge halted the $111 billion deal, prompting Paramount to voluntarily pause closing until June 2027 or resolution of the litigation, with a trial now scheduled for March 2027. While the DOJ approved the transaction in June and international regulators including the UK have cleared it, the multi-state challenge over reduced competition in film distribution and cable networks creates substantial uncertainty and timeline slippage. Preliminary settlement talks with California officials began in late August but face significant hurdles given the trial schedule and job-impact concerns.