The lawsuit said that the false claims were partly an effort to win over viewers who were angered by Fox's decision on election night to - correctly - declare that Mr Trump's then-challenger, Joe Biden, had won the crucial state of Arizona.
Two of the Fox executives responsible for the Arizona decision lost their jobs two months later.
Legal findings released ahead of the trial suggested that a number of Fox executives and journalists privately questioned and dismissed conspiracy claims that the 2020 presidential election was stolen, but still put them on air.