NBA to Supply Official League Data to Kalshi and Polymarket

The National Basketball Association (NBA) is set to deliver official league data directly to prediction-market operators Kalshi and Polymarket, marking a notable milestone in the integration of mainstream professional sports with event-contract trading venues.

The arrangement enables both platforms to resolve basketball-related markets using verified, real-time figures sourced straight from the league. Kalshi, which operates as a regulated exchange under the supervision of the US Commodity Futures Trading Commission, and Polymarket, a decentralised trading venue, have both steadily expanded their catalogues to cover sporting fixtures alongside their traditional political and economic listings.

Prediction markets allow participants to buy and sell contracts tied to specific real-world outcomes, with prices shifting between zero and 100 per cent to indicate the collective probability assessed by market participants. For sports-related contracts, access to reliable and immediate data is critical to maintain orderly trading, avoid disputed resolutions, and support contracts that depend on precise game statistics.

The NBA's move to establish official data links with prediction platforms reflects the expanding commercial footprint of the sector. Major sporting leagues have long licensed official statistics to traditional bookmakers, and the extension of similar arrangements to prediction venues highlights the growing overlap between conventional sports wagering and financial event contracts.