The last price is the price at which a contract most recently traded.
Last reviewed 5 December 2025 · Educational, not advice
The last price is a record of history. It is the price the most recent buyer and seller agreed on, captured the moment that trade completed. Platforms show it prominently because it is the simplest single number to describe where a market is, and on a contract priced between one and ninety nine cents it doubles as a rough reading of the implied probability the market last put on the outcome.
What the last price is not is a promise about your next trade. The price you will actually get depends on the live bids and offers sitting in the order book, not on what someone else paid a moment ago. The two often sit close together in a busy market, but they are different things.
Reading the last price as if it were a current quote is a common and costly mistake. To buy, you pay the best available ask. To sell, you receive the best available bid. The last price tells you where the market has been, while the bid and ask tell you where it is now. In a deep market the difference is small. In a thin one it can be large.
The last price can also be stale. If a contract has not traded for hours, that number may lag far behind where the market would transact today, especially if news has arrived in the meantime. Treat the last price as a reference point, then check the order book and the spread before you act. It is current opinion frozen at the last trade, never a guarantee of the result or of your fill.
A contract shows a last price of fifty two cents. You assume you can buy at fifty two. But the order book shows the best ask is fifty five cents, because the last trade happened a while ago and sellers have since stepped back.
If you place a market order you fill at fifty five, three cents above the last price you saw. The last price was accurate as a record, just out of date as a quote. Checking the ask first would have shown you the real cost before you committed.
Understanding how these markets work does not make trading safe. Prediction markets can lose you money, and a confident price can still be wrong. Stake only what you can afford to lose, never to chase a loss, and never on borrowed money. If it stops feeling like a free choice, step back. In the United States you can call or text the helpline on 1-800-GAMBLER or visit ncpgambling.org.
Not necessarily. The last price is what a previous trade filled at. Your next trade fills against the current best offers in the order book, which can be higher or lower. In a fast or thin market the gap can be wide.
The last price is historical, the price of the most recent completed trade. The bid and ask are live, the best prices buyers and sellers are offering right now. To estimate your fill, look at the ask if buying and the bid if selling, not the last price.
Yes. If a contract has not traded for a while, the last price can lag behind where the market would actually transact now. In thin or quiet markets, treat it as a loose reference rather than a current quote.
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