Kalshi and Polymarket are prediction markets where users trade 'contracts' on real-world events, similar to gambling but with a stock market twist.

A recent Columbia University study has found that about 25% of Polymarket’s trading activity over the past three years is artificial and arranged through wash trading. A new study by researchers at ...

Polymarket Super Bowl: What is it and How Do Users Trade on the Big Game? Polymarket is a prediction market platform where users can simply buy or sell shares, based on a "yes" or "no" outcome, tied ...

A Columbia study found that up to 60% of Polymarket’s volume may stem from wash trading, raising new concerns about artificial activity in prediction markets. The rapid growth of the prediction market ...

The prediction-market platform has introduced a way to make (or lose) money on how much it costs to live here.

Recent bets on when nuclear weapons will detonate are raising concerns about monetizing the apocalypse. Nuclear detonation ...

Prediction market Polymarket is "rife" with wash trading, a type of market manipulation that's illegal in traditional finance and involves the identical person acting as both buyer and seller on a ...

The rise of prediction markets offers statisticians and social scientists the kind of help that astronomers get from a new ...

On Sep. 17, the Federal Reserve announced its much-awaited decision on interest rates. As expected, the central bank has decided to cut rates by 25 basis points. Users on Polymarket had predicted that ...

The volume of activity on Polymarket, one of the most popular prediction markets, has been significantly inflated by so-called wash trading in which users rapidly buy and sell the same contracts, ...