Adam Silver told CNBC on Friday that the NBA wants direct access to prediction-market trading data to detect insider trading and manipulation, and wants a say in which contracts the platforms are allowed to list. Then he said the part that should give everybody pause.
“We want access to that data. We also want control of the market.”
Integrity and Control Are Different Things
Access to trading data is defensible. Leagues have a real interest in knowing when somebody loads up on a player prop twenty minutes before an unannounced scratch. That is the kind of signal that caught Jontay Porter, who received a lifetime ban in April 2024, and that sits behind the October 2025 federal arrests of Terry Rozier and Chauncey Billups, both of whom were placed on immediate league leave.
Control over which contracts exist is a different ask. That is a private business asking to shape what a federally regulated market is permitted to offer, and no major American league has ever had that. Silver’s own example of “odd behavior” was contracts on whether a coach will be fired, which is less an integrity threat than a thing the league finds embarrassing.
What the NBA Has Already Filed
The league is not improvising here. On April 30, 2026 the NBA filed a comment letter with the CFTC proposing limits on player-prop and injury markets, a minimum trading age of 21, a ban on league staff trading relevant contracts and mandatory cooperation with league investigations. It has held data-sharing and marketing talks with Kalshi and Polymarket.
Silver said he favors federal oversight over the current patchwork: “We have roughly 40 different jurisdictions regulating us right now.” That complaint is legitimate. It also happens to point toward a single regulator the league is already lobbying.
The NFL Moved First
One day earlier, on Thursday, the NFL filed a Supreme Court amicus brief in New Jersey’s case against Kalshi arguing that sports contracts are gambling rather than CFTC-regulated swaps. That brief states football accounted for $1.8 billion of $3.3 billion in prediction-market volume on the first Sunday of the 2026 season. The American Gaming Association filed a supporting brief Thursday.
Silver, for his part, treats the whole category as one problem: “Whether it’s called a prediction market, whether it’s sports betting, it’s the same issues for our league.”
The Honest Version of the Ask
If the NBA wants trading data to police its own people, say that and only that. The league has earned the right to ask after the last two years. What it has not earned is veto power over a market that competes with the sportsbooks it already partners with.
Worth noting as you read the quotes: CNBC disclosed a commercial relationship with Kalshi that includes a minority investment, and the specific program the interview aired on has not been confirmed across sources. The words are Silver’s. The incentives in the room are everybody’s.
A longtime sports reporter, Carlos Garcia has written about some of the biggest and most notable athletic events of the last 5 years. He has been credentialed to cover MLS, NBA and MLB games all over the United States. His work has been published on Fox Sports, Bleacher Report, AOL and the Washington Post.