NBA signs CFTC prediction market pact, taps Kalshi and Polymarket

The NBA on Monday became the third major US sports league, after Major League Baseball and the National Hockey League, to sign a data-sharing memorandum of understanding with the Commodity Futures Trading Commission (CFTC) on sports event contracts. Like the others, it also named the leading platforms as "preferred exchanges", with The Block reporting the NBA tapped both Kalshi and Polymarket, according to CoinDesk.

What the deal covers

• Integrity data: Kalshi says it and the NBA will share integrity data, report suspicious trading and cooperate on investigations.
• Limits: the arrangement restricts which markets can be offered and explicitly bars league and team personnel from trading NBA event contracts.
• Regulator's view: CFTC chairman Mike Selig called it "a responsible step" to protect sports integrity and traders from insider trading and fraud.
• League's view: Scott Kaufman-Ross, the NBA's head of media distribution and partnerships, said it was important to work with regulators and operators so that "appropriate safeguards are in place".

The fight it lands in

Event contracts are simple yes-or-no trades, the mechanism explained in our guide to what prediction markets are. Several states argue that sports contracts are gambling and belong under their own gaming laws. Three major federal court rulings have split, two of them in favour of the states, and the US Supreme Court has been asked to settle the question.

The NFL has sided with the states in a filing to the Supreme Court, arguing that CFTC oversight is lax and understaffed and that the platforms are not held to the standards state gaming regulators apply. So two of America's biggest leagues are now on opposite sides of the same legal fight.

Why crypto traders should care

Kalshi and Polymarket are also where a fast-growing share of crypto speculation happens: crypto-linked contracts on the two platforms hit a record $2.7 billion in notional volume in one week this month, second only to sports. Each league deal makes the CFTC-regulated model look more established, which matters for every product these venues list, including bitcoin price contracts. The Supreme Court question is the bigger risk: a ruling for the states could force sports markets, their biggest category, to follow state-by-state rules.