What is Polymarket? A Complete Guide

Introduction to Polymarket

Polymarket is the world's largest prediction market platform, where users trade on the outcomes of real-world events. Think of it as a stock market, but instead of buying shares in companies, you buy shares in outcomes — like whether a particular candidate will win an election, whether Bitcoin will hit a certain price, or whether a specific policy will be enacted.

Founded in 2020 by Shayne Coplan, Polymarket quickly became the go-to platform for anyone looking to gauge public sentiment on current events. By mid-2024, the platform was processing hundreds of millions of dollars in monthly trading volume, making it a serious indicator of crowd-sourced probability.

How Prediction Markets Work

At its core, a prediction market lets you buy and sell shares tied to the outcome of an event. Each market has a "Yes" and "No" side. If you believe an event will happen, you buy "Yes" shares. If you think it won't, you buy "No" shares.

Shares are priced between $0.01 and $1.00. The price reflects the market's implied probability. A "Yes" share priced at $0.70 means the crowd believes there's roughly a 70% chance the event will occur. If you're right, your shares pay out $1.00 each. If you're wrong, they become worthless.

Why Polymarket Matters

Prediction markets are often more accurate than polls, pundits, and models. This is because participants have real money at stake — "skin in the game" — which incentivizes honest assessment rather than wishful thinking or partisan bias.

Polymarket gained particular prominence during the 2024 U.S. presidential election, where its markets consistently provided probability estimates that many analysts considered more reliable than traditional polling averages. Major media outlets, including Bloomberg and The Wall Street Journal, began citing Polymarket odds alongside traditional polls.

Key Features

Wide range of markets: Polymarket covers politics, economics, crypto, sports, entertainment, science, and more. At any given time, there are hundreds of active markets to trade.

Real-time pricing: Prices update constantly as new information emerges, giving you a live pulse on how the crowd assesses probabilities.

Liquidity: Major markets on Polymarket have deep liquidity, meaning you can buy and sell significant positions without dramatically moving the price.

Transparency: All trading activity is recorded on the Polygon blockchain, making it auditable and transparent.

Who Uses Polymarket?

Polymarket attracts a diverse user base: traders looking for profit opportunities, researchers studying crowd wisdom, journalists seeking real-time probability data, political operatives tracking sentiment, and everyday people curious about what might happen next.

The platform has become an essential tool for anyone who wants to understand not just what might happen, but what the collective intelligence of the market believes is most likely to happen.

Legal Status and Availability

Polymarket operates on the Polygon blockchain and accepts cryptocurrency deposits. It's important to note that Polymarket is not available to U.S. residents for trading (they can view markets but not trade) due to a 2022 settlement with the CFTC. The platform is accessible to users in most other countries.

For U.S. residents interested in prediction markets, regulated alternatives like Kalshi are available.