How Prediction Markets Work
Prediction markets let you trade contracts on the outcome of real-world events — elections, sports, economics, and more. Prices reflect the crowd's probability estimate for each outcome.
Important: Trading fees (typically 2%) erode returns on every trade. Most retail participants face significant information asymmetry against professional traders. Treat these as speculative instruments for civic or intellectual engagement — not an investment strategy.
What Is a Prediction Market?
A prediction market is an exchange where participants buy and sell contracts tied to the outcome of future events. Each contract resolves at $1.00 if the event occurs and $0.00 if it does not. The current price of a "Yes" contract — say, $0.65 — implies the market believes there is approximately a 65% chance the event will happen.
Unlike traditional gambling, you can exit your position before the event resolves by selling your contracts. However, every trade incurs a platform fee — typically 2% of the contract value — which compounds into meaningful drag on any strategy.
Professional traders, hedge funds, and information-rich participants dominate these markets. Retail participation is best approached as civic engagement or entertainment with a quantifiable cost, not as a path to consistent profit.
Prices = Probabilities
A contract trading at $0.70 implies a 70% market consensus probability. The price fluctuates as new information changes expectations.
Fees Erode Returns
Most platforms charge ~2% per trade. On a 50-50 position you need to be right significantly more than 50% of the time just to break even.
Information Asymmetry
Sophisticated traders have better models and faster information. Retail participants consistently underperform market-makers on politically or financially sensitive events.
Top Platforms
Responsible Participation
Prediction markets are speculative instruments. Every trade incurs fees regardless of outcome. The house (platform) is guaranteed revenue while your returns depend entirely on being better-informed than other participants. Never trade more than you can afford to lose entirely. If speculative trading is affecting your finances or wellbeing, call the National Problem Gambling Helpline: 1-800-522-4700 (free, confidential, 24/7).