Prediction & Event Markets

Prediction markets are platforms where participants buy and sell contracts that pay out based on the outcome of real-world events. Each contract is priced between $0 and $1, representing the implied probability of the event occurring — a contract at $0.65 implies a 65% market probability. If you buy the contract and the outcome happens, you receive $1. This mechanism aggregates the collective beliefs of participants into a single probability estimate, often more accurate than polls or analyst forecasts. Platforms like Polymarket use blockchain-based settlement; Kalshi is a regulated US exchange for event contracts.

Polymarket is the largest decentralised prediction market, built on the Polygon blockchain. It is accessible globally, offers markets on politics, crypto, economics, and sports, and settles using USDC. Kalshi is a US-regulated exchange supervised by the CFTC — it offers the strongest regulatory protections but is primarily available to US residents. Manifold Markets is a social prediction market using play money — useful for learning the mechanics without financial risk. For most international traders, Polymarket offers the best combination of liquidity, market variety, and accessibility.

Financial and macroeconomic events are among the most traded categories on prediction markets. Central bank decisions attract enormous liquidity and are closely correlated with traditional market positioning. The edge in these markets comes from combining macro analysis with understanding where market probabilities are mispriced. Unlike Forex trading where you speculate on the magnitude of a move, prediction markets require you to be right about the binary outcome — direction only, not size. This makes them a complementary tool alongside traditional market instruments.

Political markets — elections, referendums, leadership changes — are the highest-profile prediction markets. Sports markets cover match outcomes, tournament winners, and player performance. Economic outcome markets cover central bank decisions, inflation and employment data, and corporate events. Each category requires different analytical frameworks: political markets reward those who understand polling methodology; economic markets reward macro traders who can interpret central bank communications; sports markets favour those with statistical modelling skills.

Regulated platforms like Kalshi are authorised by financial regulators. Your funds are held in segregated accounts, disputes have a legal resolution pathway, and the platform is subject to oversight. The trade-off is restricted access (primarily US residents) and a narrower range of markets. Decentralised platforms like Polymarket use smart contracts on a public blockchain — there is no central counterparty and settlement is automated by code. This eliminates counterparty risk with an operator but introduces smart contract risk. For larger positions where legal protections matter, regulated options are preferable where accessible.

Risk management in prediction markets differs from traditional trading because outcomes are binary — contracts settle at $1 or $0. There is no stop loss that saves you from a bad position. Position sizing is the primary risk management tool. Never allocate more than a small percentage of your prediction market capital to a single contract, regardless of how confident you are. Correlation is a key risk: holding large positions on multiple contracts that all depend on the same event concentrates your exposure. The discipline of thinking in expected value — probability multiplied by payout, minus cost — is what separates successful prediction market traders from gamblers.