In One Sentence
Prediction markets are places where people bet on whether a specific event will happen—election results, interest rate cuts, a company going public, a team winning a championship, and more. You buy a "Yes/No" contract: if the event happens, the contract settles at $1; if not, it settles at $0.
Price = Probability, How Does That Work?
Example: A "Yes" contract for "Will a certain event happen?" is trading at $0.62.
- If it happens → You earn $1 − $0.62 = $0.38 per contract.
- If it doesn't → You lose $0.62 per contract.
When someone thinks the price is "too low," they buy, pushing the price up; when someone thinks it's "too high," they sell, pushing the price down. Eventually, the price settles where both buyers and sellers agree—this point is the probability voted on with real money. As news changes, the price moves within seconds, much faster than any poll.
What's the Difference Between Polymarket and Kalshi?
| Polymarket | Kalshi | |
|---|---|---|
| Type | Crypto-native, on-chain | US regulated exchange |
| Settlement Currency | USDC (stablecoin on Polygon chain) | US Dollar |
| Regulation | Global users | Regulated by US CFTC |
| Typical Users | Crypto enthusiasts, global traders | US compliant users |
Why Did It Explode in 2026?
Trading volume in prediction markets has exploded: weekly volume rose from an average of about $500 million in early 2025 to a record high of roughly $10.8 billion in a single week by mid-2026. Major events like the SpaceX IPO and the NBA Finals have attracted massive capital. It has evolved from a niche crypto experiment into a mainstream "event trading" venue, even drawing in quantitative institutions.
How to Read the Odds? (Don't Be Fooled by Extremes)
- Price is probability: $0.80 ≈ 80% probability, $0.10 ≈ 10%.
- Trust markets with higher volume: Prices backed by millions of dollars in volume are real signals; thin, low-volume markets can be easily swayed by a few large trades or even manipulated.
- Discount extremes: There's a pattern called the "favorite-longshot bias"—unlikely events are often overpriced, and near-certain events are often underpriced. Be cautious when you see extreme prices like 3% or 97%.
- Watch the change, not just the number: A rapid move from 30% to 55% is often more noteworthy than the absolute current price.
Is It Legal? Is It Safe?
Platforms like Kalshi, registered with the US CFTC, operate under federal regulation. The CFTC has also asserted "exclusive jurisdiction" over prediction markets and proposed a new regulatory framework in June 2026. Meanwhile, Congress is advancing rules (e.g., banning members of Congress and their families from betting on political outcomes). The overall trend is "increasingly mainstream" and "increasingly regulated" happening simultaneously.
Summary
Prediction markets use "Yes/No" contracts to turn the "probability of an event happening" into a tradable, real-time price (price ≈ probability). Polymarket uses crypto USDC for on-chain settlement, while Kalshi operates as a US-compliant dollar-based exchange. Together, they have made "event trading" a major trend in 2026. For a professional market/risk perspective on "whether odds truly equal real probability and can be used as signals," visit our sister site Market Pulse Daily.