Disclosure: This article is for educational purposes only and is not financial, investment, or gamblingadvice. Prediction-market trading carries risk, and you can lose the full amount you spend. Rules, access, fees, and availability can vary by location and can change over time.
Polymarket is a prediction market: instead of placing a traditional sportsbook-style wager, users buy and sell shares tied to the outcome of a real-world question. The price of a share is commonly read as the market’s live estimate of the chance that outcome will happen.
For example, the screenshot shows the question: “How high will Bitcoin get this year? Above $89,999.99.” The market displays “Yes 63%” and “No 38%.” In plain English, traders are collectively pricing the chance that Bitcoin will go above $89,999.99 during the stated period at roughly 63%. Each winning outcome share is designed to settle at $1, while the losing side settles at $0.polymarket+1
What You’re Actually Buying
A Polymarket question usually has two possible sides:
Yes — you believe the event will happen under the market’s exact rules.
No — you believe it will not happen under those rules.
Rather than thinking of this as a normal fixed-odds bet, think of it as purchasing a contract. A Yes or No share generally trades somewhere between $0.00 and $1.00.
The share price is meaningful:
This is not a guarantee of the outcome. It is simply the price other market participants are currently willing to trade at. Prices can move quickly when news breaks, trading activity rises, or new information changes people’s expectations. Polymarket describes these as peer-to-peer markets, where participants trade with one another rather than betting directly against a house.polymarket
Reading the Bitcoin Example
In the image, the market asks whether Bitcoin will trade above $89,999.99 this year.
If the Yes side is shown around 63 cents, a trader buying one Yes share would pay roughly $0.63, plus any applicable costs shown at checkout. If Bitcoin meets the market’s stated condition and the market resolves Yes, that winning share settles at $1.00.
Here is the simple math:
The key lesson: the percentage on the screen is also closely related to the price you pay. A 63-cent Yes share has a maximum payout of $1, so the potential upside if you hold to a Yes resolution is about 37 cents per share before any fees or trading costs.
How to Place a Trade
The exact onboarding and payment experience can differ by region and account status, but the basic process is straightforward.
Read the question carefully.
Do not rely only on the headline. Open the market and read the full wording, deadline, source criteria, definitions, and resolution rules. “Above $89,999.99” may have specific conditions about the price source, whether the threshold must be reached at any point, and when the market closes.Choose Yes or No.
Select Yes if you believe the event is more likely than the price suggests. Select No if you think the event is less likely than the price suggests.Enter an amount.
The screenshot includes quick amount buttons such as +$5, +$10, and +$25. Your amount determines how many shares you can buy at the current market price. For instance, if Yes costs $0.63 and you spend $10, you would receive roughly shares before accounting for fees, price movement, and order execution.Review the order details.
Check the current price, number of shares, possible payout, costs, and the market’s rules. In an active market, the price can change between viewing the screen and completing the trade.Place the trade.
You may see an option to buy at the available market price or, in some interfaces, set a limit price. A market-style order aims to fill promptly at available prices; a limit order specifies the highest price you are willing to pay for Yes or No and may not fill immediately.Monitor, sell, or hold.
You are not necessarily required to wait until the event is decided. If sentiment changes and the price rises, you may be able to sell your shares before the resolution date. Likewise, you may sell to reduce a position if the market moves against you. Polymarket’s documentation notes that participants can exit by selling positions before final resolution.polymarket
You Can Sell Before the Outcome
One major difference between a traditional wager and a prediction-market position is that the position may have a resale value before the final answer is known.
Imagine you buy Yes at $0.40 because you believe Bitcoin has a better chance of hitting the target than the market thinks. Later, favorable price news pushes Yes up to $0.70.
At that point, you could:
Hold until the question is officially resolved.
Sell the shares near $0.70 and lock in the difference between your purchase price and sale price.
Buy more, if you still believe the market is undervaluing the chance—though that increases risk.
In this example, selling a share bought at $0.40 for $0.70 would create a gross gain of $0.30 per share before trading costs. But the reverse can happen too: a share bought at $0.63 may fall to $0.40 if the market becomes less confident, even before the deadline.
How Resolution and Payouts Work
At the end of the market, Polymarket determines which side matches the outcome under the market’s published resolution rules. For binary Yes/No markets, the winning shares settle at $1.00 each, while shares on the losing side become worth $0.00.polymarket+1
Polymarket’s documentation says its markets use an UMA Optimistic Oracle process: an outcome can be proposed, there is an opportunity for challenges, and disputed outcomes can be decided through UMA’s dispute-resolution process. That is why the written market rules and resolution source matter so much.polymarket
A market can feel obvious based on a headline but still resolve differently if the precise wording was not satisfied. Always check:
The exact event being measured.
The time period and cut-off date.
The approved data source or source hierarchy.
What counts as confirmation.
Any special definitions or exclusions.
Important Risks to Know
Prediction markets are easy to understand on the surface, but they are not risk-free.
You can lose your entire purchase amount. If the shares you hold resolve on the wrong side, they settle at $0.
A percentage is not certainty. “Yes 63%” means the market sees Yes as more likely than No—not that it will definitely happen.
Prices can be volatile. News, rumors, liquidity, and broader market moves can change the value of your shares quickly.
The rules control the outcome. The market does not resolve based on what seems fair or what a trader intended to bet on; it resolves under the specific published criteria.
Trading costs matter. Review any displayed fees, spreads, and price differences between buying and selling. The available price may differ from the headline probability because buyers and sellers may be offering different prices.
Access may be restricted. Account eligibility, identity checks, payment methods, and legal availability depend on your jurisdiction and the platform’s current rules. Confirm that you are allowed to use the service where you live before depositing or trading.
A Simple Way to Think About It
The question to ask is not merely, “Do I think Bitcoin will reach $90,000?”
A more useful question is:
“Do I think the actual chance of Bitcoin going above $89,999.99 is higher or lower than the market price currently implies—and have I read the rules that determine the answer?”
If you believe the chance is higher than 63%, you might consider the Yes side. If you believe the chance is lower than 63%, you might consider the No side. If you are unsure, the most sensible move may be not to trade at all.
Prediction markets can be useful for following public expectations around news, politics, crypto, sports, entertainment, and economic events. But they should be treated as speculative trading: only use money you can afford to lose, keep position sizes small, and never confuse a market price with a guaranteed forecast.
