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How to read prediction market probabilities 2026: Master the art of interpreting market forecasts
Don’t take our word for it - learning how to read prediction market probabilities is vital if you’re looking at yes or no event contracts provided on platforms offering these services. You must know what’s involved before you purchase any shares.
We’ve compiled this guide to help explain what prediction markets are and how each event contract can end in a yes or no outcome. You’ll see prediction markets based on sports, culture, and even political topics. We’ll provide examples here, and explain how probabilities work and how real world outcomes lead to a winner and a loser on each occasion.
What are prediction markets?
Prediction markets provide you with a binary choice for a specific future event. This applies to every prediction market you will find on platforms that offer this service. We have presented some examples of markets in the below table.
| Prediction Market Topic Area | Examples of Potential Prediction Markets |
|---|---|
| Sports |
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| Commodities |
|
| Culture |
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| Mentions | What will a certain individual say in an upcoming speech (usually a specific word or phrase) |
Different platforms will provide coverage of various prediction markets, with some offering greater scope than others. You can use the links on the banners provided here to determine platform availability in your region.
How do binary choices work in prediction markets?
Here’s what you need to know - each future event will have a yes or no outcome. You’ll notice that events are posed in a question format. For example - will a particular movie win Best Picture at the Oscars? This format allows you to consider the probability of a yes or no outcome.
You can then consider purchasing event contracts for the yes or no outcomes, as desired. We have compiled a full guide titled, ‘What is event trading?’ to provide further detail on this aspect.
Remember that prediction markets are specific in this manner. You won’t see a Best Picture topic with various movies listed underneath as you might be familiar with on traditional sites. Instead, each movie listed has yes or no options, with the current probabilities listed for each.
How to read prediction market probabilities
Let’s continue with our Best Picture example to understand how the yes or no options work. Participants will choose one or the other, which leads to percentages for each potential outcome. This applies to all prediction market platforms. Read our guide titled ‘how does Kalshi work’ to confirm details for that specific platform.
Understanding yes or no outcomes
Let’s assume that 75% of participants believe the named movie will win Best Picture (Yes), while 25% believe it won’t (No). These percentages then convert to prices for each option. The price will of course vary according to your own currency, so for the purposes of this example, we shall use simple numbers.
- 75% - converts to an event contract priced at 0.75
- 25% - converts to an event contract priced at 0.25
You would then consider how many shares to buy in the event contract you believe will be correct. Note that percentages - and therefore event contract prices - will alter as time goes on. Events may influence the likelihood of a prediction market resolving to yes or no, which in turn may influence how many people back the yes or no outcome.
What happens when the outcome of the prediction market is known?
In every case, predicting the correct outcome results in receiving 1.00 per share. So, if your country uses dollars and you backed the above No outcome at 25 cents per share, you would receive $1.00 per share when the market resolves.
If you chose the incorrect outcome, you would receive nothing, losing the amount you had used to purchase shares. It’s imperative, therefore, to only purchase shares that you can afford to lose should the event contract not work out in your favor. Note also that sites may impose fees when purchasing event contracts, making it prudent that you should check this aspect in advance.
Are you located in the US?
If so, you might ask if prediction markets are legal in the US, and the answer is yes, they are. US services such as Polymarket and Kalshi are regulated and overseen by the CFTC - the Commodity Futures Trading Commission, and must abide by all their rules.
Don’t take our word for it if you’re based in the US though. Make sure you read through our extensive and fact-filled reviews here to find out how Polymarket works along with a selection of other carefully curated prediction market platforms. Note that the banners we provide will adjust to display relevant links to sites you can access if you’re a resident of the United States.
The pros and cons of reading prediction market probabilities
Here’s what we’d suggest - always bear in mind that the probabilities of an event happening (or not) are based on what participants believe at that moment. They can and do change. Thus, if you do purchase shares in the outcome you believe will occur, it’s sensible for you to keep track of what’s happening. You may wish to sell your shares early if the price suggests it would be a good option. The following pros and cons may also help.
- Binary outcomes
- Plenty of prediction markets
- Many topic areas
- Risk of financial loss
Keep track of variable prediction market probabilities
The probability of any single event happening will change given new data as the deadline approaches in its prediction market topic area. Do your own research and read our guides, put together using the latest facts and research into the subject of prediction markets. Use the links on this page and provided throughout this website to aid your research.
You must be sure you understand how prediction markets work, along with how to calculate probabilities and determine whether to follow a yes or no outcome. With extensive coverage of various topic areas around the world, we have found that many people like having access to prediction markets and the simplicity of a binary choice of outcomes.
Explore our handpicked prediction market sites
How to read prediction market probabilities FAQs
How are prediction market probabilities calculated?
The probabilities are based on the beliefs of those taking part. If 60% of people believe a specific outcome will occur, this presents a price of 0.60 per share for that outcome.
Can shares in event contracts adjust in price in prediction markets?
Yes. When a prediction market opens, 10% of participants may initially believe the event in question will occur, giving a price of 0.10 per share. However, if more information is gleaned over time, more participants may believe the event will occur, pushing the Yes share higher.
Can you sell shares in an event contract before the prediction market resolves?
Yes - if you purchased shares at a low price and the price per event contract has risen since then, you may decide to sell your shares before the market concludes. This may be safer than waiting to see if the price rises further or drops.
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