This is a market on whether Barbie' (2023) or 'Oppenheimer' (2023) will have a higher domestic gross on their opening weekend. The respective "Domestic Weekend" tabs on https://www.boxofficemojo.com/title/tt1517268/ and https://www.boxofficemojo.com/title/tt15398776/ will be used to resolve this market once the values for their 3-day opening weekend (July 21-23) are final (i.e. not studio estimates). This market will resolve to "Barbie" if 'Barbie' grosses more than 'Oppenheimer' on its 3-day opening weekend. This market will resolve to "Oppenheimer" if 'Oppenheimer' grosses more than 'Barbie' on its 3-day opening weekend. If 'Barbie' and 'Oppenheimer' gross an exactly equal amount on their 3-day opening weekend, this market will resolve 50-50. Opening weekend is defined as the first Friday, Saturday, and Sunday of the film's release. Please note, this market will resolve according to the Box Office Mojo number under Domestic Weekend for the 3-day weekend, regardless of whether domestic refers to only the USA, or to USA and Canada, etc. If there is no final data available by July 31, 2023, 11:59:59 PM ET, another credible resolution source will be chosen.