'Inside Out 2' arrives in theaters and could hit a 100-day run. Here's why that's increasingly rare

Disney is looking to bring a little joy to theaters with its upcoming release of Pixar's "Inside Out 2."

Current expectations see the animated sequel easily topping $85 million during its domestic opening this weekend, which would make it the highest debut of any film released in the United States and Canada in 2024. Some are even forecasting the film could secure more than $100 million in ticket sales, a feat not seen since July 2023 when Warner Bros.' "Barbie" waltzed into cinemas.

Already "Inside Out 2" has tallied $13 million from Thursday night preview showings in North America. For comparison, 2019's "Toy Story 4" generated $12 million on its Thursday previews and snared $120.9 million for its opening weekend.

Any opening figure north of $50 million would be a boon for Pixar, which has struggled to regain its foothold at the box office in the wake of the pandemic. However, Disney seems confident in "Inside Out 2," as the film is expected to have a 100-day theatrical run, a nearly unheard-of stint nowadays for animated features and non-blockbuster action flicks.

While most consumers are agnostic about theatrical release windows — the period of weeks or months that a film is shown exclusively in theaters before it hits streaming or other on-demand options — for cinema operators and box office analysts, a commitment to more than three months of exclusivity on the big screen is a big deal.

Before the pandemic, industry standard was what's known as the 90-day theatrical window (though the average was actually closer to about 75 days in reality, according to market research firm The Numbers).

Only a rare few films would extend beyond that date — usually massive franchise films or blockbuster hits. After that time frame, a film