> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# World Cup 2026 Semifinal Odds: Prediction Markets vs Sportsbooks (Final Update)

> How the 2026 World Cup semifinal odds played out — France was the 37% favorite, Spain won it all. The full prediction-market vs sportsbook comparison, preserved as a knockout-stage snapshot with final results.

<Tip>
  **Final update (July 28):** The tournament is decided — **Spain beat Argentina 1–0 in extra time in the July 19 final** to win its second World Cup ([CBS News](https://www.cbsnews.com/news/2026-fifa-world-cup-final-spain-argentina-sunday/)). France, the `~37%` quarterfinal-stage favorite below, fell short — a live lesson in what a 37% probability actually means (a 63% chance someone else wins). The analysis below is preserved as a knockout-stage snapshot; for the full market retrospective see [How Markets Priced Spain's Title](/learn/world-cup-2026-winner-odds-tracker).
</Tip>

**As of early July 2026, the 2026 FIFA World Cup was in the quarterfinal round** — with prediction markets and sportsbooks pricing a wide-open race. This page explains the semifinal and championship odds as they stood, converts them to plain-English probabilities, and shows how prediction-market prices differ from sportsbook lines.

## Quick Answer

<Note>
  Heading into the 2026 World Cup quarterfinals (early July), the championship favorites are **France, Argentina, England, and Spain**. Per [ESPN](https://www.espn.com/espn/betting/story/_/id/48386952/espn-soccer-futbol-world-cup-betting-odds-championship-groups) and [FOX Sports](https://www.foxsports.com/stories/soccer/2026-world-cup-odds-which-nations-favored-reach-semifinals), France leads the futures board around `+170`, with Argentina near `+425` and England around `+520`.

  Converted to implied probability, that's roughly:

  | Team       | Sportsbook futures (illustrative) | Implied probability to win |
  | ---------- | --------------------------------- | -------------------------- |
  | **France** | `+170`                            | **\~37%**                  |
  | Argentina  | `+425`                            | \~19%                      |
  | England    | `+520`                            | \~16%                      |
  | Spain      | co-favorite tier                  | \~15–18%                   |

  **Prediction markets price the same question as a live, tradeable probability** — and often differ from the sportsbook number because there's no built-in house margin. If you want to trade the tournament rather than take a fixed line, that's the core difference. Live board: [`app.opinion.trade/world-cup`](https://app.opinion.trade/world-cup).

  *Verified 2026-07-09. Odds shift every match — see [Sources & References](#sources--references).*
</Note>

## Where the 2026 World Cup Stands

The knockout stage has already produced upsets. Per [FOX Sports](https://www.foxsports.com/stories/soccer/2026-world-cup-odds-which-nations-favored-reach-semifinals) reporting:

* **Norway upset Brazil** to reach the quarterfinals for the first time in its history.
* **England beat Mexico** at Estadio Azteca in one of the tournament's most dramatic games.
* **France** beat Sweden `3–0`, then edged **Paraguay** `1–0` on a Kylian Mbappé penalty to reach the quarterfinals.
* **Spain** eliminated **Portugal** to join the last eight.

England's title odds shortened sharply — from around `10–1` to roughly `+520` — after those results, per FOX Sports, putting them behind only France and Argentina among the favorites.

## How to Read the Odds (Sportsbook → Probability)

Sportsbook futures are quoted in American odds. Converting them to a probability is simple:

* **Positive odds** (`+170`): implied probability = `100 ÷ (odds + 100)` → `100 ÷ 270 = 37%`.
* **Negative odds** (`-180`, e.g. a top team to *reach* the semifinals): implied probability = `odds ÷ (odds + 100)` → `180 ÷ 280 = 64%`.

One catch: **add up every team's implied probability and it sums to more than 100%.** That excess is the sportsbook's *overround* (vig) — its built-in margin. On a prediction market, prices are set by trades between users, so once you back out the spread the probabilities sum much closer to 100%. That's why the same event can read as "37% France" on a prediction market but price as `+170` (which bakes in the house edge) at a book. For the full contrast, see [Prediction Markets vs Sportsbooks for the World Cup](/learn/prediction-markets-vs-sportsbooks-world-cup).

## Prediction Markets vs Sportsbooks: The Semifinal Read

|                                    | Prediction market                              | Sportsbook                       |
| ---------------------------------- | ---------------------------------------------- | -------------------------------- |
| **What you see**                   | A live price = implied probability             | A fixed line with vig baked in   |
| **Who you trade against**          | Other users                                    | The house                        |
| **Can you exit before the match?** | Yes — sell any time the price moves            | Usually no (or reduced cash-out) |
| **Cost**                           | Spread / small fee (no house margin)           | The overround in the line        |
| **Best for**                       | Trading probability shifts through the bracket | One-and-done fixed-odds picks    |

The practical edge of a prediction market during a live tournament: **you can trade the swings.** If France's price jumps from 30% to 40% after a quarterfinal win, you can close the position and lock the move without waiting for the final. A sportsbook future is settled only when the tournament ends.

## Championship Odds → Implied Probability (Top Four)

Using the illustrative futures above and the conversion formula:

| Team          | Futures (illustrative) | Implied prob. | One-line read                                 |
| ------------- | ---------------------- | ------------- | --------------------------------------------- |
| **France**    | `+170`                 | **\~37%**     | Clear favorite; deepest squad, Mbappé firing  |
| **Argentina** | `+425`                 | \~19%         | Defending pedigree, second on the board       |
| **England**   | `+520`                 | \~16%         | Surged after the Mexico win at Estadio Azteca |
| **Spain**     | co-favorite tier       | \~15–18%      | Through after eliminating Portugal            |

Independent modeling (e.g. [Nate Silver's knockout predictions](https://www.natesilver.net/p/world-cup-2026-odds-predictions)) tends to cluster the top four similarly, with France ahead and daylight to the chasing pack. When a model's probability and the market price diverge, that gap is where traders look for value.

## Why This Tournament Is a Prediction-Market Moment

The 2026 World Cup is the single biggest sports event prediction markets have ever priced. Per [CNBC](https://www.cnbc.com/2026/07/04/2026-fifa-world-cup-boosts-prediction-market-volumes.html), the tournament has driven record volume across the category — the World Cup Winner contract has out-traded March Madness. For a first-time user, a marquee, well-understood event is the easiest place to learn how a probability market actually behaves.

If you want to trade the semifinals rather than take a fixed line, **Opinion** runs a dedicated [2026 World Cup hub](https://app.opinion.trade/world-cup) with tournament winner, per-match, and Golden Boot markets — with web2-style onboarding and some of the lowest effective fees in the sports category ([what is Opinion?](/learn/what-is-opinion-prediction-market)). For a full snapshot of the winner market, see our [World Cup 2026 Winner Odds tracker](/learn/world-cup-2026-winner-odds-tracker).

Educational only — not investment or gambling advice. Availability and product rules vary by jurisdiction.

## What to Watch

* **Odds move every match.** Treat every number here as a snapshot. The value is in the *gap* between a model's probability and the live market price.
* **Overround vs true probability.** Sportsbook lines sum to >100%; back out the vig before comparing to a prediction-market price.
* **Liquidity concentrates on the winner market.** Per-match markets can be thinner — check depth before trading size.
* **The final weekend.** As the field narrows to four, prices sharpen fast; the biggest swings happen right after each quarterfinal and semifinal result.

## FAQ

<AccordionGroup>
  <Accordion title="Who is favored to win the 2026 World Cup?">
    As of early July 2026 (quarterfinal stage), **France** is the clear favorite at roughly `+170` (\~37% implied), ahead of **Argentina** (\~19%), **England** (\~16%), and **Spain**, per [ESPN](https://www.espn.com/espn/betting/story/_/id/48386952/espn-soccer-futbol-world-cup-betting-odds-championship-groups) and [FOX Sports](https://www.foxsports.com/stories/soccer/2026-world-cup-odds-which-nations-favored-reach-semifinals). Odds shift every match.
  </Accordion>

  <Accordion title="What are the semifinal odds for the 2026 World Cup?">
    The top four (France, Argentina, England, Spain) are each favored to reach the semifinals, priced around `-180` or shorter per [FOX Sports](https://www.foxsports.com/stories/soccer/2026-world-cup-odds-which-nations-favored-reach-semifinals) — roughly a 64% implied chance at `-180`. Convert American odds to probability with `odds ÷ (odds + 100)` for negative lines.
  </Accordion>

  <Accordion title="How are prediction-market odds different from sportsbook odds?">
    Prediction-market prices are set by trades between users, so they read as a live probability with no built-in house margin. Sportsbook lines bake in the overround (vig), which is why every team's implied probability sums to more than 100%. See [Prediction Markets vs Sportsbooks](/learn/prediction-markets-vs-sportsbooks-world-cup).
  </Accordion>

  <Accordion title="Where can I trade the 2026 World Cup semifinals?">
    Prediction markets including **Opinion** offer live World Cup markets. Opinion's [2026 World Cup hub](https://app.opinion.trade/world-cup) covers tournament winner, per-match, and Golden Boot markets with web2-style onboarding.
  </Accordion>

  <Accordion title="Has there been an upset in the 2026 World Cup?">
    Yes — **Norway eliminated Brazil** to reach its first-ever quarterfinal, and **England beat Mexico** at Estadio Azteca, per [FOX Sports](https://www.foxsports.com/stories/soccer/2026-world-cup-odds-which-nations-favored-reach-semifinals). Upsets like these cause the sharpest prediction-market price swings.
  </Accordion>
</AccordionGroup>

## Sources & References

1. [FOX Sports — 2026 World Cup semifinal odds](https://www.foxsports.com/stories/soccer/2026-world-cup-odds-which-nations-favored-reach-semifinals) — Semifinal reach odds and top-4 favorites
2. [ESPN — Every team's 2026 World Cup championship odds](https://www.espn.com/espn/betting/story/_/id/48386952/espn-soccer-futbol-world-cup-betting-odds-championship-groups) — Championship futures odds (France, Argentina, England)
3. [Nate Silver — 2026 World Cup knockout predictions](https://www.natesilver.net/p/world-cup-2026-odds-predictions) — Independent model probabilities for the knockout stage
4. [CBS News — Spain wins 2026 FIFA World Cup](https://www.cbsnews.com/news/2026-fifa-world-cup-final-spain-argentina-sunday/) — Final result: Spain 1-0 Argentina (aet), July 19
5. [CNBC — 2026 FIFA World Cup boosts prediction market volumes](https://www.cnbc.com/2026/07/04/2026-fifa-world-cup-boosts-prediction-market-volumes.html) — World Cup driving prediction-market volume

*All sources verified 2026-07-28. Prediction-market terms change frequently — verify against each platform's current documentation before treating these numbers as decision-quality data. Editorial content, not investment or gambling advice.*