“Thor: Ragnarok” thundered to one of the year’s best box-office debuts with an estimated $121 million domestically, proving again — just as its flexing its muscle — the might of the Walt Disney Co.


“Thor: Ragnarok” thundered to one of the year’s best box-office debuts with an estimated $121 million domestically, proving again — just as its flexing its muscle — the might of the Walt Disney Co.