Market order
Last reviewed 2026-08-07
Market order — definition
An order to trade immediately at whatever prices are currently available on the book.
Market orders guarantee execution but not price. On thin books they can fill far from the last-trade price.
Use sparingly. In college markets, the spread alone can swing the result by 5%+.
Learn more: How prediction markets work
See also
Frequently asked questions
What does market order mean in prediction markets?
An order to trade immediately at whatever prices are currently available on the book.
How does market order work in practice?
Market orders guarantee execution but not price. On thin books they can fill far from the last-trade price.
Sources & further reading
- CFTC — Event contracts explainedU.S. Commodity Futures Trading Commission
- Kalshi — how prices and settlement workKalshi
- UMA Optimistic Oracle documentationUMA Protocol
Last reviewed 2026-08-07 · CollegePredictionMarkets.com