French weather service alerts police to tampering after suspicious Polymarket bets
Users of weather forum say Paris temperature data may have been manipulated for wagers on prediction market platform
Users of weather forum say Paris temperature data may have been manipulated for wagers on prediction market platform

Without identity checks, prediction market regulation will be toothless

Insider bets, low liquidity and regulatory gaps complicate efforts to turn wagers into financial tools

Value of bets soars from $100mn to $13bn a month

High rate of winning wagers likely to add to concerns that sensitive information can leak on prediction markets

They can send wrong signals when trading is illiquid or when herd behaviour takes hold

Prediction markets are the latest example of a disruptive new industry smacking into problems incumbents have long understood