Infiniti Intelligence Hourly Briefing — Oct 9, 2026 · 9:54 AM ET

Baltimore has sued Kalshi, Polymarket and their affiliated companies, alleging that their sports prediction markets violate the city’s Consumer Protection Ordinance. Mayor Brandon Scott and the Baltimore City Council filed the lawsuits Thursday, according to GambleRSS, adding Baltimore, Maryland, to the jurisdictions challenging the operators.

Baltimore’s case

The mayor’s office says the companies offer sports betting without the required licenses and misrepresent their products’ legal and regulatory standing. The complaints point to contracts covering game winners, point spreads, player statistics and other outcomes that the city considers comparable to sportsbook wagers.

Baltimore argues that describing those products as event contracts or prediction-market trades lets the companies compete against licensed sportsbooks while avoiding equivalent oversight, taxes, responsible-gambling obligations and consumer safeguards. Scott accused the multibillion-dollar businesses of using terminology to circumvent gambling laws and putting profits ahead of residents and communities.

The litigation follows another gambling-related action by Baltimore this year. In March, the city sued six sweepstakes casinos, alleging that they supplied casino-style games to residents despite Maryland’s prohibition on online casino gambling, GambleRSS reported.

Operators invoke federal oversight

Both companies have previously distinguished peer-to-peer event contracts from conventional sports betting, where sportsbooks set the odds. In its response to Baltimore, Kalshi denied breaching consumer protection laws and said it operates legally under its federal regulator’s exclusive authority. It characterized the lawsuits as a politically motivated attempt to revisit a case already on appeal before the Fourth Circuit and said it would defend itself in court.

Polymarket argued that municipal enforcement conflicts with the Commodity Futures Trading Commission (CFTC) framework governing prediction markets. The company said courts have recognized that markets on CFTC-registered exchanges fall under federal law, rather than differing state and local rules. These are the operators’ legal positions, not findings resolving Baltimore’s allegations.

Separately, GambleRSS reported that Kalshi and Polymarket had flagged 140 suspicious transactions potentially associated with insider trading so far this year. The report did not establish that those transactions involved proven misconduct.

What it means for prediction markets

• Jurisdiction remains central: Baltimore is invoking local consumer protection powers, while the companies maintain that federal regulation governs their markets.
• Sports contracts are the focus: The city’s claims concern whether contracts resembling sportsbook wagers require the same licensing and safeguards as traditional sports betting.
• The Fourth Circuit appeal is relevant: Kalshi links Baltimore’s action to an existing appellate dispute. The reported filings and company responses do not establish an outcome for either proceeding.

The Seminole Tribe, which holds Florida’s sports-betting monopoly, has sued DraftKings and its chief executive, Jason Robins, seeking to stop two of the company’s offerings, according to igaming-times.com.

The tribe is asking a Broward County court to shut down DraftKings’ sports prediction-market tab and its Pick6 game. The reporting, published Oct 9, 2026 at 9:54 AM ET, also says the tribe has personally accused Robins of racketeering.

A state-court challenge

The lawsuit proceeds under state law in state court, according to igaming-times.com. That places DraftKings’ federal preemption defence at the centre of the dispute: the company must establish that defence rather than treat it as a settled protection against the tribe’s claims.

The requested shutdown covers both sports prediction-market contracts and Pick6, rather than just one product. The supplied reporting describes the tribe’s allegations and requested relief; it does not report a court ruling on either the claims or the preemption defence.

What it means for prediction markets

• Federal preemption is a key issue to watch. The state-court case challenges whether that defence protects DraftKings’ sports prediction-market offering from the tribe’s state-law claims.
• The requested relief targets product availability. The tribe wants the court to halt the sports prediction-market tab as well as Pick6; that request is not itself a shutdown order.
• Allegations remain distinct from findings. The personal racketeering accusation against Jason Robins is part of the tribe’s case, not a reported judicial conclusion.