Prediction markets are decentralised platforms where users bet on the outcome of real-world events – elections, sports, economic indicators, crypto prices, or any verifiable future occurrence – by buying shares representing possible outcomes. The market price of each outcome share reflects the crowd collective probability estimate: a share priced at $0.70 implies a 70% probability of that outcome occurring. Prediction markets aggregate distributed information more efficiently than polls or expert panels because participants risk real money, incentivising accurate rather than performative forecasting. Polymarket (on Polygon) is the dominant crypto prediction market, handling billions in volume during the 2024 US presidential election. Augur was an early Ethereum pioneer; Manifold Markets enables anyone to create markets without financial stakes. Key mechanics: outcome shares are priced 0-100 cents; winners receive $1 per share; losers lose their stake; market resolves when the outcome is verifiable on-chain via oracle. Prediction markets face regulatory challenges in many jurisdictions (particularly the US, where CFTC has jurisdiction over event contracts) and liquidity limitations on niche questions. They are increasingly used as real-time sentiment indicators alongside traditional price data.
Example: Example: During the November 2024 US presidential election, Polymarket handled over $3.5 billion in total trading volume – dwarfing all previous prediction market records. Markets correctly predicted the winner days before traditional polls showed the shift, demonstrating prediction markets real-time aggregation of dispersed information. Trump shares traded at 65 cents (65% implied probability) when most polls showed a coin-flip.
Learn more: Polymarket – Prediction Markets
