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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.
About Triple Meow Riches
The investment banking and capital markets firm Jefferies said in a September report that sports had become prediction markets’ “most important liquidity driver”, with combo and parlay-style contracts accounting for an increasing share of activity. But the analysts cautioned that prediction markets are scale businesses with relatively low revenue yields, leaving their economics dependent on sustained liquidity, engagement and trading activity.
James Monk, founder of sports data and streaming provider Catalist Sports, has witnessed that dependence directly. Catalist supplies ITF tennis data to Kalshi and Polymarket and has an exclusive US sports-streaming agreement with Kalshi.
The company must also provide data to the firms making markets on those events.
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Brazil’s President Luiz Inácio Lula da Silva is expected to send a provisional measure to Congress this week to tighten the regulations for betting in Brazil.
According to CNN Brazil, the government is considering expanding restrictions on betting advertising and banning online casino games. The idea would be to maintain only sports betting.
The decision to use a provisional measure means the restrictions can take effect immediately, less than a month before the elections. This is the clearest indication yet that the sector is being used for electoral purposes to try and secure Lula’s re-election.