Polymarket explained: how prediction markets price real-world events
Polymarket is an online prediction market where people trade shares tied to yes-or-no questions about real-world events, such as elections, sports results and political appointments. The price of a share is often read as the crowd's estimate of how likely that outcome is. This guide explains how that pricing works, what the numbers do and don't mean, and how to read a market page.
What a prediction market is
A prediction market lets people buy and sell contracts that pay out based on how a future event turns out. Each market asks a specific question with a defined outcome, such as whether a party will control a legislative chamber after an election.
Polymarket is one of the best-known platforms of this type. Its markets are usually binary, meaning there is a Yes side and a No side, and only one of them pays out once the question is resolved.
How shares and prices work
Each side of a market is sold as shares. When the market resolves, a winning share pays a fixed amount, and a losing share pays nothing. Because of that, a share's price always sits somewhere between zero and the payout amount.
This structure is what makes the price readable as a probability. If a Yes share is trading near 94 cents and pays one dollar when it wins, the market is saying the outcome is about 94% likely. A price near 7 cents on the same question implies a much lower chance.
Prices change as people buy and sell. When new information arrives, traders who think the market has it wrong tend to trade against the current price, which moves it toward what they believe the true odds are.
Reading the live board on 2026-10-30
On 2026-10-30, several markets on VaultX's predictions view showed the following Yes and No prices. The House questions are a useful example of how complementary markets work. The Republican and Democratic control questions show mirror-image prices, with the Republican House question at Yes 7% and No 94%, and the Democratic House question at Yes 94% and No 7%.
Other markets on the same snapshot included the 2026 Balance of Power question at Yes 7% and No 94%, the Netanyahu next Prime Minister question at Yes 41% and No 60%, and the Likud most-seats question at Yes 100% and No 0%. A tennis match, Alexandra Eala against Diana Shnaider at the Pan Pacific Open, was priced at 10% for Eala and 91% for Shnaider.
Notice that the two sides of a market don't always add to exactly 100%. Small gaps like the 7% and 94% pairs above usually come from rounding and from the difference between the buying and selling price at a given moment. Read the figures as approximate.
The same snapshot also included a crypto market update. On 2026-10-30, total crypto market capitalization stood at $2.65T, down 4.4% over 24 hours, and the Fear & Greed index read 30, which is labeled Fear and was 21 points lower than the day before. Headlines reported a selloff that wiped out $1.5 billion in leveraged crypto bets. These figures describe market sentiment and price moves. They are separate from the event probabilities on prediction markets, and one doesn't tell you the other.
What prices do and don't tell you
A price is the market's best collective estimate at a given moment, based on the money and information of the people trading. It is not a guarantee. A market at 94% still resolves No about one time in twenty, if the price is well calibrated.
Prices can also be less reliable in some cases. Markets with few traders can be moved by a small amount of money. Markets on very obscure events may not attract enough attention to reflect good information. Prices can overreact to news and then settle back.
A price near 0% or 100% does not mean the question is settled until the market officially resolves. Check the resolution rules, because they define exactly what counts as a Yes or a No.
Risks and things to check first
Trading on prediction markets carries real risk. You can lose the full amount you put in. Prices can move sharply, and it may be hard to exit a position at a fair price when trading is thin.
Before trading on any platform, read its rules and fees, understand how markets are resolved, and check whether the platform is available where you live. Rules on prediction markets differ by country and can change, so confirm your local situation yourself.
Nothing on this page is investment advice, and the prices shown are a snapshot, not a recommendation to buy or sell.
A quick checklist for reading any market page
Use this order when you look at a market for the first time. It takes a minute and prevents most common misreadings.
- Read the exact question and the resolution rules, including the date and the source used to decide the outcome.
- Look at the Yes and No prices and treat them as an approximate probability, not a certainty.
- Check how many people are trading. Thin markets move more easily.
- Note the time of the snapshot, since prices change constantly.
- Compare related markets. Mirror-image questions should roughly agree with each other.
- Separate event probabilities from general market sentiment, such as crypto price moves or fear indexes.
See it in live data
The live predictions page at vaultx.llc/predictions shows current Yes and No prices for these markets next to the latest crypto market snapshot, as of the time you load it.
Open the live viewGet alerts on TelegramQuestions people ask
What does a 94% price on Polymarket mean?
It means the market's collective estimate is that the Yes outcome is about 94% likely, based on how the share is trading. It is not a guarantee, and the outcome can still go the other way.
Are Polymarket prices the same as real probabilities?
Not exactly. Prices are a useful approximation of the crowd's view, but they can be distorted by thin trading, rounding, and the spread between buy and sell prices. Treat them as estimates rather than precise odds.
Where can I see the current prediction market prices?
VaultX's live predictions page at vaultx.llc/predictions shows current Yes and No prices for selected markets, along with the latest crypto market snapshot. Prices change constantly, so check the page for the current figures.
Related on VaultX
Written by an AI agent from public data and reviewed by automated checks. Educational only, not investment advice.
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