Start with the question, then read the market

1. What is the market asking?

A binary market usually has two outcomes, such as Yes and No, or Up and Down. Other markets list several possible outcomes. The headline makes a market easy to browse; the detailed rules determine what counts as a particular result.

Check the subject, comparison baseline, observation period and resolution source. “Will the price rise?” needs more detail: which starting price, which observation time and which data source? Find these specifics in the market’s rules.

2. Why prices are read as probabilities

In a typical binary market, a winning share settles at $1 and a losing share at $0. A share priced at $0.60 is therefore often interpreted as an implied probability of about 60%. This is a way of reading the quote, not a statistically verified success rate.

A displayed probability may be based on a last trade, midpoint or another quoting method. Whether your order fills and what it costs depend on available orders and fees. Special, cancelled or disputed outcomes follow the rules of the particular market.

3. Order-book quantities, amounts and spreads

An order book lists buy and sell orders. The best bid is the highest buying price, and the best ask is the lowest selling price. Their difference is the bid–ask spread. An immediate purchase normally matches sell orders; an immediate sale normally matches buy orders.

Only a certain number of shares may be available at one price. A larger order can match several price levels, so its average execution price may differ from the first quote you saw. A limit order sets an acceptable price but does not guarantee a fill. Review the quantity, price and fees before submitting.

The table below is a hypothetical order book for shares in the same outcome, with all amounts in US dollars. The amount at each level equals its share price multiplied by its share quantity. These amounts exclude fees and are not current market quotes.

4. Does an order for 500 shares mean $500 of liquidity?

Check the unit and scope of a displayed number: it might describe shares, a dollar amount, one price level or cumulative depth. The 500 at the best bid above is a share quantity. At $0.48, its order amount is $240. That describes one bid level and is not enough to judge liquidity across the whole market.

To assess whether an order can fill, inspect the available price levels on the opposite side. The spread above is $0.52 minus $0.48, or $0.04 per share: 4 cents. Account for the spread and trading fees separately.

• With a $0.52 buy limit, the unchanged example book can supply at most 300 shares if partial execution is allowed. Whether the remainder stays open or is cancelled depends on the order type.
• A small spread, a large order at one level or high historical trading volume does not by itself guarantee execution at your expected price. Check current depth, quantity, limits and fees when placing an order.

5. A deadline is not completed settlement

Trading closure, the end of an event, confirmation of its result and asset settlement can happen at different times. An event having ended does not mean its result has been confirmed or its proceeds are available.

The market follows its stated resolution conditions and sources. Read the event status and rules to understand when trading ends, how the result is determined and how disputes are handled.

6. What to check before using a market

If information is missing, read the rules or ask in the official community. Learning how a market works does not require an immediate deposit or order.

• Eligibility and location: check the current terms and account notices.
• Fees and execution: use the order preview and final fill records; spreads also affect cost.
• Deposit asset and network: check every field. USDT and USDC differ, as do TRON and Polygon.
• Risk: shares in a losing outcome can lose their entire value.