A market built around a yes-or-no question
On Polymarket, a trader can buy a share tied to a specific outcome: for example, whether the Federal Reserve will raise interest rates before a stated date. If the event is officially resolved as “yes,” that share pays one dollar; if not, it pays nothing. A trader can also sell a position before the deadline, so the payoff is not necessarily all-or-nothing in practice.
The price gives the market’s implied probability. A share trading for 40 cents suggests roughly a 40% chance of “yes,” before fees and other trading frictions. That number is not a poll result or a guarantee. It is the price at which buyers and sellers are currently willing to take the other side.
Why traders put money behind forecasts
A poll asks people what they expect; a prediction market makes participants risk capital on that expectation. If new information changes a trader’s view, buying or selling can move the price quickly. Traders who believe the market is mispricing an outcome have an incentive to act, while those who disagree can take the opposite position. The resulting price aggregates many judgments—but it can still be wrong, especially when information is scarce or trading is thin.
Polymarket uses crypto infrastructure and dollar-pegged stablecoins for trading. That can make it possible to open positions without using a conventional brokerage account, but it does not make the underlying wager risk-free or remove the need for rules about how the event will be judged. A narrowly worded question needs a clear resolution source; ambiguous wording can turn a seemingly simple bet into a dispute over what counts as the outcome.
Different from a stock trade—and not outside every rule
A share in a prediction market is a claim on a particular event, not ownership in a company. Its value depends on the event’s resolution rather than a firm’s earnings or assets. That makes these markets useful for expressing views on elections, policy decisions, or other discrete events, but also concentrates risk: a position can become worthless if the predicted outcome does not occur.
Using blockchain does not, by itself, put a market beyond financial regulation. The legal treatment of event-based contracts depends on the product and jurisdiction. The distinctive trade is simpler: instead of buying a broad market and waiting for prices to react to news, a trader takes a position directly on what they think will happen.
