A plain spoken pillar guide to how you lose money in prediction markets and event contracts: probabilities versus outcomes, fees and spread, liquidity, counterparty risk, crypto risk, and the behavioral traps. Information, not advice.
Last reviewed 23 June 2026 · Educational, not advice
A contract that settles to one dollar if an event happens trades between 1 and 99 cents. That price is the market's estimate of the chance. Drag the slider to see the implied probability and what a 100 dollar stake would return if it resolves yes. It is an estimate, not a forecast, and not advice.
Illustrative; excludes fees and spread, which reduce real returns.
No. A heavy favorite still loses a predictable share of the time, and the price you pay for that favorite already reflects its likelihood, so the payout is small relative to the stake. A run of favorites that lose can erase many small wins.
Only if there is someone to trade with at a price you will accept. In a thin market you may have to take a poor price or wait for resolution. The quoted number is not a guarantee that your size can trade there.
No. Oversight and customer fund protections reduce platform risk but do not remove market risk, and you can still lose your entire stake on the outcome. Unregistered and crypto venues add further risks around custody, recourse, and asset volatility.
That is a personal decision and we do not give advice. A common principle is to risk only money you can afford to lose entirely, to size positions so a losing streak does no real damage, and never to use borrowed money or chase a loss.
In the United States you can call or text 1-800-GAMBLER or visit ncpgambling.org. If trading is affecting your wellbeing or finances, stepping back and seeking support is a reasonable and healthy choice.