SiaPredict DailySeptember 17, 2026

Today's top 6

1. 1
   RegulatoryCatch-up

   Arizona asks Ninth Circuit to vacate its own injunction shielding Kalshi, citing the Nevada ruling as binding circuit precedent

   Arizona filed with the Ninth Circuit on September 15 asking it to summarily vacate the district court's May 5 preliminary injunction that currently bars the state from enforcing its gaming laws against Kalshi and other designated contract markets offering sports event contracts. The state argues the circuit's own August 28 ruling in Kalshi v. Nevada, which held sports contracts are not swaps and can be regulated as gambling, is now binding law of the circuit that undercuts the injunction's legal basis. A grant would revive Arizona's ability to pursue the criminal case AG Kris Mayes filed against Kalshi in March, adding Arizona to the list of states actively testing how far the Nevada ruling extends.

   Prediction News

   Sia's Take

   States are now asking circuit courts to consider other rulings that those same courts have made to be superseding precedent in order to allow states to enforce their own local regulation against prediction markets. While such moves may or may not be successful in the near term, the request by Arizona shows that divergent rulings by circuit courts further intensifies the need for an ultimate supreme court decision.

2. 2
   Industry

   Kraken parent Payward names Bitnomial and NinjaTrader Clearing as the regulated entities behind its Hyperliquid plan

   Payward said September 16 it intends to offer US clients access to Hyperliquid HIP-3 perpetual futures through Bitnomial Exchange, the CFTC-regulated designated contract market it acquired for $550 million, with client accounts carried by NinjaTrader Clearing, a CFTC-registered futures commission merchant, while trade matching continues on Hyperliquid's public blockchain. It is the first time the onshoring structure floated in earlier reporting has named specific regulated entities rather than describing an outline under CFTC discussion, though Payward disclosed no approval, launch date, or fee schedule, and the offering would be permissioned to accounts on both firms' allowlists rather than open to the general public.

   CoinDesk
3. 3
   Industry

   Genius Sports launches Prediction.com to compare event contracts across Kalshi, Polymarket and other venues

   Genius Sports' consumer unit Legend launched Prediction.com on September 16, a hub that lets users discover prediction markets and compare equivalent event contracts and pricing across multiple platforms, with a proprietary engine for cross-venue, multi-leg comparisons. For sports markets, the tool layers Genius Sports' own live data feeds under the pricing, giving the company a distribution and data foothold across operators rather than tying its official-data deals to any single platform.

   Prediction News
4. 4
   Industry

   Polymarket's LeBron James endorsement deal disclosed at $15 million a year, more than his 76ers salary

   Terms of LeBron James' endorsement agreement with Polymarket became public September 17, showing the deal pays him roughly $15 million a year, more than triple his two-year, $8 million contract with the Philadelphia 76ers. James is not an investor and is not endorsing the platform generally; his campaign work is focused on football-related content, and fellow campaign participants Derek Jeter and Eli Manning are reported to earn less under their own deals.

   Front Office Sports
5. 5
   IndustryCatch-up

   NFL's Goodell says the league still will not partner with prediction markets without stronger oversight

   NFL Commissioner Roger Goodell told CNBC the league needs to see stronger regulation of prediction markets before it would consider a partnership with an operator, citing consumer protection and game-integrity concerns, including manipulation risk around player-injury and referee-call contracts. The comments keep the NFL the most cautious holdout among major US leagues even as it says talks with operators continue, a contrast with MLB's existing prediction-market partnership and the college and international leagues Kalshi and Polymarket have already signed.

   Casino.org
6. 6
   Industry

   Polymarket’s Next Bet? It Can Also Be a Media Company

   The legal battle over whether prediction markets are a form of gambling has overshadowed something else entirely: They’re already a new form of media.

   WIRED