Best Prediction Markets

A prediction market is a venue where you buy and sell contracts tied to the outcome of a future event. A binary contract pays 1 unit if the event happens and 0 if it does not, so a price of 0.62 reads as a 62% implied probability. Onchain versions mint paired YES and NO tokens against collateral, which means the winning side is always fully funded by the losing side rather than by a bookmaker's balance sheet.

Most of the cost sits in the spread rather than in a line item. When YES and NO quotes add up to more than 1.00, the difference is what the market maker keeps. A 2% to 3% gap on entry plus the same again on an early exit is a real cost even on a platform that advertises zero protocol fees, so always compare the sum of both sides before you size a position.

Resolution is where these platforms differ most. Some use an oracle feed with an onchain proof, some use a decentralized dispute process with a challenge window, and some use a single operator key that writes the result after an off-chain data pipeline decides it. The last option settles fastest and carries the most counterparty risk, because a wrong result has no onchain appeal.

It depends entirely on your jurisdiction, and the answer is changing quickly. Most onchain venues geoblock the US, the UK, Canada, Australia and France among others, while regulated venues operate under a derivatives licence in specific countries. Check the terms of the platform you intend to use, and treat circumventing a geoblock as a decision with consequences for your funds rather than a technical detail.

We fund an account, take positions, exit some of them early and hold the rest to settlement. We measure the real cost of a round trip including the spread on both sides, we check how deep the book is at the size a normal trader uses, and we read who controls resolution and whether the collateral can be frozen. Marketing pages talk about markets offered, we care about what it costs to get out.