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Good market rules

How to write good prediction market rules

A good market should be boringly clear. Users need to know what counts as Yes, what counts as No, when it closes and which source decides.

Start here good prediction market rules

NordCast users, admins and market-boss automation prompts that need better market questions.

Open live markets Explore Denmark

The rule checklist

Name the actual event, avoid vague referenced-by phrasing, set a measurable trigger, name the official source, set a deadline and allow early settlement if the outcome becomes official.

Explore by country and topic

Jump from this page into the country and category pages people most often use to follow politics, economy, sport, culture and market education.

Learn prediction markets Prediction markets vs odds Learn the difference between prediction markets, bookmaker odds, polls and forecasts, with Nordic examples from politics, economy, sport and culture. Learn prediction markets Forudsigelsesmarkeder Dansk guide til forudsigelsesmarkeder i Danmark: folketingsvalg, regering, statsminister, boligpriser, inflation, sport, vejr og kultur på NordCast. Learn prediction markets What are prediction markets? A plain-English guide to prediction markets, event contracts, probability-style prices and how NordCast applies them to Nordic public events. Learn prediction markets How to read prices Learn how NordCast market prices work, why prices are shown as probability points, and how to read Yes, No, spread, volume and price movement.

Bad wording to avoid

Avoid questions like 'Will the culture event referenced by a source happen?' The user should not need to have read the article to understand the market.

Good wording pattern

Use: Will [named event or measurable outcome] happen before [date], as confirmed by [official source]? That creates a market people can understand and search for.

Live NordCast markets

These linked contracts give search visitors something useful immediately: a real market question, a current price snapshot, a deadline, and a source.

Updated 22 August 2026
Denmark · Politics

Will Denmark pass a ban on Islamic calls to prayer?

54 Yes 47 No

DKK 420K · closes Sep 9, 2026 · source: Folketinget / Regeringen.dk

 Denmark · Politics

Will a new Danish government present a written government platform before July 1, 2026?

99 Yes 1 No

DKK 2.2M · closes Jun 30, 2026 · source: Regeringen.dk

 Denmark · Real estate

Will Danish one-family house prices rise at least 6% YoY in Q1 2026?

61 Yes 40 No

DKK 5.6M · closes May 25, 2026 · source: Statistics Denmark EJ5

 Sweden · Politics

Will Sweden hold its general election on September 13, 2026?

94 Yes 7 No

SEK 4.2M · closes Sep 13, 2026 · source: Valmyndigheten

 Norway · Economy

Will Norges Bank cut its policy rate before year-end 2026?

58 Yes 43 No

NOK 3.6M · closes Dec 31, 2026 · source: Norges Bank

 Global · Formula 1

Will there be a safety car during the 2026 F1 Monaco Grand Prix?

50 Yes 51 No

DKK 1.9M · closes May 24, 2026 · source: FIA race classification

How to use this page

1. Read the question

A good market says exactly what must happen and by when.

2. Check the source

Official sources should settle the outcome before news commentary does.

3. Compare the price

Prices are probability-style signals, strongest when volume and activity are high.

FAQ

What is the most common bad market rule?

A vague question that references an article without naming the actual event or measurable trigger.

Should every market have a source?

Yes. The source is what makes settlement credible.

Should a market mention the date?

Yes. Deadlines make markets searchable, tradable and resolvable.

Keep exploring NordCast

NordCast is a Nordic-first public alpha for prediction markets. Use the country hubs, topic pages and live market cards to move from a broad question into a specific contract.

Denmark Danmark hub Danmarks NordCast-hub for prediction markets, folketingsvalg odds, statsminister odds, boligpriser, inflation, earnings, sport, vejr og kultur. Sweden Sverige hub Sveriges NordCast-hub for riksdagsvalet 2026 odds, svensk politik, Riksbanken, inflation, bolag, sport, väder och kultur. Norway Norge hub Norges NordCast-hub for norsk politikk odds, statsminister, Norges Bank, inflasjon, boligpriser, sport, vær, kultur og selskaper. Europe and platform alternatives European prediction markets European prediction markets for politics, economy, sport, weather, culture, and earnings, starting with Denmark, Sweden, Norway and the Nordics. Politics and elections Nordic politics odds A Nordic politics hub for Danish, Swedish and Norwegian election odds, prime minister markets, government formation and coalition probabilities. Economy, rates and housing Nordic economy forecasts Nordic macro prediction markets for inflation, central bank rates, GDP, housing, public finances and official economic releases. Sport and Formula 1 Nordic sports markets Sports prediction markets for Nordic football, Tour de France, Formula 1, winter sports and major international events with Nordic interest. Culture and Eurovision Nordic Eurovision odds Eurovision and national-final prediction markets for Denmark, Sweden, Norway and broader Nordic music outcomes. Learn prediction markets Prediction markets vs odds Learn the difference between prediction markets, bookmaker odds, polls and forecasts, with Nordic examples from politics, economy, sport and culture.
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