Cinemark Holdings Inc. CNK shares rose 1.6% on Monday in premarket trading, thanks to the success of “Barbie” (the eagerly anticipated movie) and “Oppenheimer”, which opened last Friday. The opening weekend box office performance of “Barbie” & “Oppenheimer”, which opened Friday, sparked a “Barbenheimer” internet phenomenon. People watched both films at the same time. Cinemark stock closed Friday’s session up 78.8%, but was down 0.8% on the day.