What Are Prediction Markets?
Prediction markets are exchange platforms where you can trade on the outcomes of real-world events. Instead of buying stocks or commodities, you buy and sell contracts that pay out based on whether something happens or not.
Think of it like this: if you believe the next iPhone will have a foldable screen, you can buy a "Yes" contract on a prediction market. If you're right, the contract pays out $1. If you're wrong, it's worth $0. The price you pay reflects the market's estimated probability of that event.
How Do Prediction Market Contracts Work?
Every prediction market contract represents a binary question — something that will resolve to either Yes or No. Here's how it works in practice:
Contract pricing: Contracts trade between $0.01 and $0.99. The price equals the market's implied probability. A contract priced at $0.65 means the crowd believes there's a 65% chance the event will happen.
Buying Yes contracts: If you think the event will happen and the current price is $0.60, you pay $0.60 per contract. If you're right, each contract pays $1.00 — a profit of $0.40 per contract.
Buying No contracts: If you think the event won't happen, you buy the No side. If a Yes contract costs $0.60, the No contract costs $0.40. If the event doesn't happen, your No contract pays $1.00 — a profit of $0.60.
Selling before resolution: You don't have to wait for the event to happen. You can sell your contracts at any time at the current market price, just like stocks.
Step-by-Step: Your First Prediction Market Trade
Here's exactly how to make your first trade, using Polymarket as an example:
Step 1: Choose a Platform
Select a prediction market based on your needs:
- Polymarket — Largest market, deepest liquidity, requires crypto (USDC)
- Kalshi — CFTC-regulated, accepts bank deposits, best for U.S. users
- Manifold Markets — Free play money, perfect for learning
Step 2: Create an Account and Deposit Funds
On Polymarket, connect a crypto wallet and deposit USDC. On Kalshi, link your bank account and transfer dollars. On Manifold, just sign up — you get free play money.
Step 3: Browse Markets
Explore available markets across categories like politics, sports, economics, crypto, and culture. Each market shows the current probability (price) and trading volume.
Step 4: Analyze the Market
Before trading, consider:
- What is the current implied probability?
- Do you have information or analysis suggesting the real probability is different?
- What is the potential payout vs. your risk?
- When does the market resolve?
Step 5: Place Your Trade
Select the market, choose Yes or No, enter your amount, and confirm. Your order either fills immediately at market price or you can set a limit order at your desired price.
Step 6: Monitor and Manage
Watch how the market moves. You can:
- Hold until resolution for maximum payout
- Sell early to lock in profit if the price moves in your favor
- Cut losses by selling if the price moves against you
How Markets Resolve (Settlement)
When the event occurs (or the deadline passes), the market resolves:
- The outcome is determined — Did the event happen (Yes) or not (No)?
- Winning contracts pay $1.00 — Each winning contract is worth exactly one dollar
- Losing contracts pay $0.00 — They expire worthless
- Funds are distributed — Payouts go to your account balance automatically
Different platforms use different resolution methods:
- Polymarket uses UMA's decentralized oracle — a transparent, blockchain-based verification system
- Kalshi uses internal resolution with regulatory oversight from the CFTC
- Manifold uses community resolution for play-money markets
Understanding Probability and Odds
The beauty of prediction markets is that prices equal probabilities. Here's how to read them:
| Contract Price | Implied Probability | Potential Profit (per $1 risked) |
|---|---|---|
| $0.10 | 10% chance | $9.00 if correct |
| $0.25 | 25% chance | $3.00 if correct |
| $0.50 | 50% chance | $1.00 if correct |
| $0.75 | 75% chance | $0.33 if correct |
| $0.90 | 90% chance | $0.11 if correct |
Low-probability events offer high payouts but are unlikely to happen. High-probability events are safer but offer smaller returns.
Types of Prediction Markets
Binary Markets
The most common type — a simple Yes/No question. Example: "Will Bitcoin exceed $100,000 by June 2026?"
Multi-Outcome Markets
Markets with more than two possible outcomes. Example: "Who will win the 2028 Presidential Election?" with contracts for each candidate.
Scalar Markets
Markets that resolve to a specific number. Example: "What will the S&P 500 close at on December 31, 2026?"
Key Strategies for Beginners
Start with play money. Use Manifold Markets to practice without financial risk. Learn how order books work, how prices move, and how resolution happens.
Focus on what you know. Trade in areas where you have genuine expertise or strong research capabilities. Your edge comes from knowing something the market doesn't.
Manage your risk. Never put all your funds in one market. Diversify across multiple events and platforms. Set a maximum amount you're willing to lose per trade.
Watch for arbitrage. Sometimes the same event is priced differently on different platforms. If Polymarket says 60% and Kalshi says 40% for the same Yes outcome, there's a theoretical arbitrage opportunity.
Fees and Costs
Every platform handles fees differently:
- Polymarket: No direct trading fees. You pay the spread (difference between buy and sell prices) plus Polygon network gas fees for transactions
- Kalshi: Trading fees of 1-7% depending on contract price tier, no deposit fees for bank transfers
- Manifold: Completely free — it uses play money
- Azuro: Protocol fees vary by front-end, typically 2-5% on winnings
See our complete fee comparison for detailed breakdowns.
Is It Safe?
Prediction market safety depends on the platform:
- Regulated platforms (Kalshi): Funds held in segregated accounts, CFTC oversight, strong consumer protections
- Decentralized platforms (Polymarket, Azuro): Smart contract risk exists, but transparent on-chain operations. No central party can freeze your funds
- Play money platforms (Manifold, Metaculus): No financial risk at all
Read our safety guide for platform-specific security assessments.
Getting Started Today
- Learn risk-free: Create a Manifold Markets account and practice with play money
- Research platforms: Read our platform rankings to find the best fit
- Start small: When you move to real money, start with amounts you can afford to lose
- Stay informed: Follow our blog for market insights and strategy guides
Prediction markets are powerful tools for both trading and understanding the world. By aggregating the opinions and research of thousands of participants, they often produce surprisingly accurate probability estimates. Whether you trade for profit or just to test your forecasting skills, understanding how prediction markets work is increasingly valuable in our data-driven world.
