Highest-Grossing Movie of 2026: Trading the Year-Long Box-Office Race

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1. What is the 2026 box-office race contract?
2. Who's actually in the race?
3. Why does Spider-Man lead Doomsday?
4. What's the most underpriced outcome?
5. What moves the price the most?
6. How do I trade this from California?

Live markets

Polymarket (opens in a new tab)'s "Highest-grossing movie in 2026" market is one of the deepest entertainment contracts of the year: $3.59M in volume and counting. Spider-Man: Brand New Day leads at 51%. Avengers: Doomsday sits at 29% despite being the heavy opening-weekend favorite. The gap between those two prices is the most important signal in the market.

For California traders, this is a year-long contract with multiple repricing windows. Here's how the leaderboard works and where the real edges live.

What is the 2026 box-office race contract?

The 2026 box-office race contract is a multi-outcome prediction market that resolves based on which theatrical film achieves the highest gross earnings by year-end.

It's a multi-outcome event contract that resolves December 31, 2026 to whichever 2026 theatrical release has the highest domestic (or in some markets worldwide) box-office gross. Polymarket's version is the most active venue with $3.59M in lifetime volume. Kalshi (opens in a new tab) runs parallel markets with US-domiciled liquidity.

Who's actually in the race?

Tom Holland stars in the Sony and Marvel co-production Spider-Man: Brand New Day, which is the structural favorite for the highest total annual gross following its July release.

Spider-Man: Brand New Day (51%, July 31). Sony/Marvel co-production, Tom Holland returning. Five months of domestic and international play before year-end. The structural favorite for total annual gross.

Avengers: Doomsday (29%, December 18). Biggest opening weekend favorite at 79% on Kalshi. See our Doomsday opening-weekend guide. But only two weeks of 2026 calendar, which caps annual gross potential.

The Super Mario Galaxy Movie (9%, April 3). The 2023 Super Mario Bros. Movie did $1.36B worldwide. Galaxy is the direct sequel from Illumination/Nintendo. 9% looks low if you believe the original's audience returns.

The Odyssey (3.7%, July 17). Christopher Nolan adapting Homer with Matt Damon, Tom Holland, Anne Hathaway, Robert Pattinson. Oppenheimer did $976M worldwide on a serious-adult premise. 3.7% is the most underpriced outcome on the board if Nolan delivers.

Tail outcomes. Toy Story 5 (June 19), Zootopia 2 (Thanksgiving), Mickey 17 carryover, How to Train Your Dragon live action. None priced above 5% but any could surprise.

Spider-Man wins on calendar. Doomsday wins on opening. The Odyssey wins if Nolan does what Nolan does.

Why does Spider-Man lead Doomsday?

Spider-Man precedes Doomsday on the release calendar by five months, allowing it to accumulate a much larger total gross through an extended theatrical window before the year ends.

Pure release-window math. Brand New Day opens July 31 and plays through Christmas: five months of domestic theatrical, plus international staggered releases. Doomsday opens December 18 and has roughly two weeks of 2026 calendar before resolution. Even with a $300M opening, Doomsday would need extraordinary international play in the final 13 days of the year to overtake a Spider-Man release that's been grossing since August.

The market is correctly pricing this structural difference. The trade is not "which film is bigger". It's "which film accumulates more dollars before December 31."

What's the most underpriced outcome?

The Odyssey represents the most underpriced outcome at 3.7% due to Christopher Nolan's historical box office performance, a deep ensemble cast, and an advantageous July 2026 release.

The Odyssey at 3.7% looks like the asymmetric trade. Three reasons: Nolan's last three films grossed $1.05B (Tenet), $976M (Oppenheimer), and $773M (Dunkirk). The cast is the deepest of any 2026 film. And it opens July 17: two weeks before Spider-Man, giving it an early-summer window with limited direct competition. If The Odyssey opens above $80M domestic and holds strong, it can credibly contend.

The risk: Nolan films skew adult and date-night. Annual gross winners almost always include strong family/four-quadrant appeal. The Odyssey is closer to Oppenheimer than Inception in audience profile.

What moves the price the most?

Opening weekends, Rotten Tomatoes scores, and international box office performances serve as the primary drivers of movie market price fluctuations.

Price Mover	Detail
Opening weekends.	Each tentpole's first three days reprice the entire board. Mario Galaxy in April is the first major repricing event.
Rotten Tomatoes scores.	A sub-60% score on a $200M opener kills its long-tail potential.
International numbers.	Polymarket's contract often resolves on worldwide gross. China openings matter disproportionately for franchise films.
Holiday-week holds.	Memorial Day, July 4, Thanksgiving multipliers tell you which films have legs vs. which are front-loaded.

How do I trade this from California?

California residents can trade this market legally through either Kalshi or Polymarket, utilizing US bank transfers or crypto-funded accounts respectively.

Kalshi and Polymarket both run this market. Polymarket has deeper crypto-funded volume on the multi-outcome contract; Kalshi has cleaner US bank rails and individual yes/no contracts on each film. Both are CFTC (opens in a new tab)-regulated and legal in California.

Most active traders pick a single contract they have a real edge on rather than spreading across all eight outcomes. Spreading usually loses to the implicit fees built into multi-outcome markets. Pick your conviction film, size it small, and hold to a clear repricing event. For broader film coverage, see our summer 2026 box office guide.

Sources

• Box Office Mojo: 2026 yearly chart (opens in a new tab)
• Variety: box office reporting (opens in a new tab)
• Deadline: box office (opens in a new tab)

Frequently asked questions

What is the highest-grossing movie of 2026 prediction market?

It's a multi-outcome contract listed on Polymarket and Kalshi that resolves December 31, 2026 to whichever 2026 release has the highest worldwide (or in some markets, US domestic) box-office gross. Polymarket's version has $3.59M in volume as of April 2026.

Who is the current favorite?

Spider-Man: Brand New Day at 51% on Polymarket. Avengers: Doomsday is at 29%, The Super Mario Galaxy Movie at 9%, The Odyssey (Christopher Nolan) at 3.7%. The full slate also includes Toy Story 5 (June 19), Zootopia 2 (November 25), and a long tail of smaller contenders.

Why does Spider-Man lead Avengers: Doomsday?

Spider-Man: Brand New Day opens July 31, giving it five months of domestic and international play before year-end. Avengers: Doomsday opens December 18, which means most of its gross will come in the final two weeks of the year. Leaving a structurally smaller window to accumulate the annual top spot, even with a bigger opening weekend.

Can Californians trade these markets?

Yes. Kalshi box-office contracts are CFTC-regulated and legal in California. Polymarket has restored US access and offers the same markets with crypto-funded volume. Both are accessible to California residents under federal commodities law.

What's the biggest 2026 release I'm probably forgetting?

Wicked: For Good already released in November 2025 (so it's not in the 2026 race). Within 2026: Mickey 17, Mission: Impossible: The Final Reckoning carryover, Zootopia 2 (Thanksgiving), and a Christopher Nolan adaptation of The Odyssey starring Matt Damon. Tracking suggests The Odyssey is meaningfully underpriced at 3.7%.

What changes pricing the most?

Trailer drops, opening-weekend results, and rotten tomatoes scores. When a tentpole opens above tracking, every other contract reprices within hours. The June-July window (Mario Galaxy aftermath, Toy Story 5 opening, Spider-Man marketing ramp) is when the leaderboard changes fastest.

Is this the same as betting on the Oscars?

Different category. Box-office contracts resolve to a specific commercial number (gross dollars). Awards contracts resolve to a subjective vote outcome. Both are CFTC-regulated event contracts on Kalshi and Polymarket; box-office markets carry deeper volume and tighter spreads.

What's a smart starting position?

Most active traders pick a single contract they have an edge on (a director, a release-window read, an international market) rather than spreading across all eight outcomes. Spreading across all options usually loses to the implicit fees built into each contract.

Are there limits on how much I can trade on 2026 movie markets?

Regulated exchanges like Kalshi may have position limits imposed by the CFTC to ensure market stability. Polymarket generally has higher liquidity for entertainment markets, allowing for larger trades. Residents should check the specific 'Market Rules' tab on their chosen platform to see the maximum number of contracts one individual can hold.

How does California tax my year-long movie market profits?

Profits are treated as capital gains. California taxes these gains as ordinary income at your applicable bracket. Since there is no legal online sports betting in the state, you cannot offset these gains with gambling losses from other platforms. You must keep accurate records of your entry and exit prices for the year-end filing.