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How to play Witches Charm
The analysts estimated that an operator capturing a one-cent spread and managing its exposure successfully could generate net economics of approximately $1.69 on a $100 trade. Returns are not guaranteed: adverse price movements and unresolved inventory can offset or exceed income from spreads, rebates and liquidity incentives.
The operational infrastructure available to these new firms, however, remains underdeveloped. Gonzalez contrasts prediction markets with equities, where trading businesses can use prime brokers, clearinghouses and standardised systems such as FIX.
“When it comes to prediction markets, none of that exists,” he said. “Everyone that’s building in the prediction market space mostly starts from ground zero.”
About Witches Charm
The number of Bet Builder bets on the 2026 World Cup doubled compared to the 2022 tournament, with the increase particularly pronounced in-play, where seven times as many live Bet Builders were placed. They accounted for 22% of all live bets, compared with just 3% four years earlier.
‘Meeting these modern expectations through manual trading is no longer realistic at scale’
Player propositions were included in 65% of Bet Builders, up from 25% in 2022. Meanwhile, player shots on target became Kambi’s second-largest pre-match betting offer by turnover, while other popular selections included a player to score or assist.
How to play Witches Charm
The two companies began collaborating in November 2025. As part of the deal, Polymarket provided data for a dedicated prediction market section on Yahoo Finance. The feature provided market-based probabilities of economic, political, and financial developments alongside Yahoo Finance content.
The Yahoo Finance prediction market section was taken out in April. The companies have now confirmed that the larger deal is also off, as reported by Bloomberg.
Yahoo said Polymarket is still an advertising partner and suggested the two could collaborate on other projects in the future. Polymarket has not provided any public explanation for the end of the data partnership.