Outcomes

Polymarket markets can be either single-outcome or multi-outcome. In both cases, each outcome is represented by a yes/no contract.

Single-Outcome

A single-outcome market has only one outcome tied to the event. It resolves to Yes or No.

Example: Will the US confirm that aliens exist in 2025?

Multi-Outcome

A multi-outcome market has several possible outcomes for the same event, with each outcome represented by its own contract. Each contract has its own order book and trades separately.

Example: In the Presidential Election Winner 2028 market, each candidate is a separate outcome.

You can imagine multi-outcome markets as a group of single-outcome questions bundled together. For instance, the Presidential Election Winner 2028 market can be broken down into:

• Will J.D. Vance be the 2028 presidential election winner?

• Will Gavin Newsom be the 2028 presidential election winner?

• Will Alexandria Ocasio-Cortez be the 2028 presidential election winner?

...and many other candidates.