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The Resolution.

Polymarket cuts George Santos as feds probe alleged Kalshi insider bet

Polymarket ended its paid contract with former U.S. Rep. George Santos on Wednesday, June 3, 2026, as federal regulators investigate whether he used non-public knowledge to trade on event contracts tied to his congressional behavior. The probe centers on an alleged bet Santos placed on rival platform Kalshi against his own attendance at Trump's State of the Union address, which Fortune reported Polymarket flagged to authorities Wednesday morning. Santos had promoted the crypto-native prediction market after his release from federal prison in October 2025 following a Trump clemency grant in a fraud case. Polymarket has not disclosed contract terms or identified the specific regulator involved, though the Associated Press reported the investigation targets a rival platform rather than Polymarket itself.

 
Why this matters?
 

Kalshi now faces direct federal scrutiny for congressional-trader vetting before its event-contract expansion into political markets. A sustained probe would force the CFTC-registered exchange to implement real-time insider-screening protocols that Polymarket can market as a competitive differentiator.

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Nevada judge blocks Polymarket from offering event contracts in state

 
Why this matters?
 

Polymarket's lack of CFTC registration leaves it exposed to a patchwork of state injunctions rather than federal pre-emption. Any platform relying on the same unregistered structure now faces heightened risk of copycat state actions while the Ninth Circuit appeal drags on.

 

Moomoo launches event contracts through Kalshi partnership after US regulatory approval

 
Why this matters?
 

Kalshi gains distribution through a brokerage with existing retail reach, pressuring standalone prediction-market apps like Polymarket to secure similar fintech partnerships or lose retail user acquisition to embedded models. The CFTC-regulated structure may also set the template for how other brokerages seek compliance cover when launching comparable products.

 

High Roller unveils ROLR prediction challenge, Crypto.com partnership

 
Why this matters?
 

Crypto.com gains a U.S. prediction market foothold through a licensed operator structure, but the SEC review timeline now governs when either party can begin generating real-money transaction revenue. Any delays in that process will burn marketing spend without offsetting income.

 

Moomoo integrates Kalshi's Fed and election event contracts into trading platform

 
Why this matters?
 

Kalshi gains instant distribution to Moomoo's retail brokerage base in the U.S. and Asia without building its own onboarding pipeline. The deal also tests whether mainstream brokerages will absorb prediction-market products natively, a model rival platforms must now evaluate.

The Resolution.
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