Polymarket Web

Web edition — quick summary

Polymarket is an online prediction market platform that allows eligible users to trade contracts based on the outcomes of real-world events. Accessible through Polymarket.com, the platform provides markets covering politics, elections, sports, cryptocurrency, economics, technology, entertainment, weather, and other topics. Participants can buy and sell outcome shares, monitor changing market probabilities, and manage positions through a browser-based trading interface. The international platform uses blockchain-based infrastructure, including the Polygon network and USDC, to facilitate trading and settlement. Polymarket also provides market charts, order books, portfolio management tools, and developer APIs for accessing prediction market data.

Prediction market highlights

• Explore event markets covering politics, sports, economics, cryptocurrency, technology, entertainment, and current events.
• Trade outcome shares whose prices reflect the market-implied probability of future events.
• Place marketable and limit orders through an order-book-based trading interface.
• Monitor real-time price charts, trading volume, liquidity, and market activity.
• Manage open positions, order history, deposits, withdrawals, and portfolio performance.
• Access public market data and trading infrastructure through supported developer APIs.

Built for event-based trading and forecasting

Polymarket allows users to trade on questions about future events rather than purchasing conventional financial assets. Each market defines a specific outcome and establishes rules for determining whether that outcome has occurred.

Participants purchase shares based on their expectations and can adjust their positions as new information becomes available. The platform combines financial incentives with crowd-based forecasting, creating continuously updated estimates of how likely different outcomes are to occur.

Market probabilities and outcome contracts

Polymarket displays outcome shares with prices generally ranging from $0 to $1. These prices can be interpreted as approximate market-implied probabilities.

For example, a Yes share priced at $0.72 suggests that the market assigns approximately a 72% probability to the specified outcome. If the outcome resolves in favor of that share, it generally becomes redeemable for $1. Otherwise, it becomes worthless.

Users can also buy or sell shares before an event is resolved. Trading prices fluctuate based on market activity, available liquidity, and new information.

Order books and trading tools

The web platform provides an order-book-based trading interface where users can submit orders to purchase or sell outcome shares.

Marketable orders can execute against available offers, while limit orders allow traders to specify the price at which they are willing to transact. Users can examine current prices, available liquidity, trading activity, and historical market movements.

These features support different trading strategies, including holding contracts until resolution or adjusting positions as probabilities change.

Politics, elections, and world events

Polymarket is widely used to follow market expectations involving political elections, government decisions, international developments, and other public events.

Users can examine how the market assesses potential outcomes and how those probabilities respond to news, polling, announcements, and other developments.

Prediction market prices can complement traditional polling and expert analysis, although they remain subject to uncertainty and changing market conditions.

Cryptocurrency, finance, and technology markets

Polymarket includes markets involving cryptocurrency prices, financial indicators, economic announcements, technology developments, and other measurable outcomes.

Users can trade contracts based on whether specified events will occur within defined time periods. Market questions may involve cryptocurrency price thresholds, interest rate decisions, economic reports, or developments in the technology industry.

Available contracts vary over time as new markets are introduced and existing events are resolved.

Sports, entertainment, and cultural events

The international web platform also provides prediction markets covering sports competitions, entertainment awards, cultural developments, and other popular topics.

Users can browse markets, compare implied probabilities, and follow changing expectations as events approach. The platform provides opportunities to trade contracts before resolution, subject to market availability and applicable geographic restrictions.

Blockchain infrastructure and USDC settlement

Polymarket's international platform uses blockchain-based infrastructure built around the Polygon network. Trading is denominated in USDC, a US dollar-pegged stablecoin.

Users can access the platform through supported account and wallet authentication methods. Blockchain infrastructure supports ownership and settlement of outcome shares, while market resolution determines which contracts are eligible for payout.

Users should understand wallet security, stablecoin risks, transaction costs, and applicable platform requirements before depositing funds.

Market data, analytics, and developer APIs

Polymarket provides data that can be useful for analysts, researchers, journalists, and developers. Users can examine price histories, trading volume, liquidity, and market activity through the website.

The platform also offers developer interfaces for retrieving market information and interacting with supported trading infrastructure. These APIs can support dashboards, forecasting tools, automated analysis, and other applications built around prediction market data.

API usage is subject to applicable documentation, rate limits, and platform policies.

Browser compatibility and mobile access

Polymarket Web runs in modern desktop and mobile browsers, including Chrome, Safari, Firefox, and Microsoft Edge.

Users can access the website from Windows, Mac, Linux, Android, and iPhone devices without installing desktop software. Supported mobile browsers may also allow users to add a shortcut to their home screen for convenient access.

The international website is separate from the Polymarket US mobile applications, and accounts cannot be assumed to work interchangeably.

Security, fees, and geographic restrictions

Polymarket restricts access in certain countries and regions, including the United States, due to regulatory requirements. The international website is intended for users in supported jurisdictions.

Trading fees vary by market category. Certain markets charge taker fees, while makers may qualify for fee-free trading or rebates. Additional charges may arise from payment providers, currency conversions, or blockchain transactions.

Trading carries financial risk, including the potential loss of an entire position. Users should also consider liquidity, smart contract risks, and the possibility of unexpected market outcomes.

Pricing and availability

Users may incur trading fees, payment processing charges, and other transaction costs depending on their activity. Certain market categories have no Polymarket trading fees, while others apply fees to qualifying taker orders.

Polymarket.com is not available for trading by US residents. Eligible US users must use the separate regulated Polymarket US offering, which has different accounts, markets, and operating requirements.

Alternative to consider

• Kalshi — a regulated prediction market platform offering event-contract trading, market data, and browser-based access to markets involving economics, sports, politics, weather, and other real-world events.