City of Baltimore goes after prediction markets for sports betting

cointelegraphPublished on 2026-08-13Last updated on 2026-08-13

Abstract

The City of Baltimore and Mayor Brendan Scott have filed lawsuits against prediction market platforms Kalshi and Polymarket. The city alleges these companies operate illegal, unlicensed sports-betting platforms that mislead users about the legality of their products. Officials argue that event contracts traded on these platforms constitute unlawful wagers under Maryland state law, not legitimate financial instruments. The complaint also names Robinhood, Webull, and Coinbase as partners in these alleged deceptive practices. This action represents a significant clash between state authorities and the U.S. Commodity Futures Trading Commission (CFTC), which asserts regulatory jurisdiction over such markets, classifying event contracts as "swaps." A Polymarket spokesperson countered that the city's lawsuit contradicts the established federal regulatory framework. Legal experts anticipate the conflict may ultimately require a Supreme Court resolution.

The City of Baltimore and its mayor, Brendan Scott, filed lawsuits against Kalshi and Polymarket over allegations that the companies violated local gambling laws.

In a Thursday notice, the Baltimore mayor’s office said that the two prediction market companies operated “illegal, unlicensed sports-betting platforms” and misled users about the ”legality and regulatory status of their products.” The lawsuits are centered on claims disputing Kalshi’s and Polymarket’s characterization of event contracts, arguing that the trades amount to unlawful wagers under state laws.

“These companies are running sportsbooks without licenses and betting that a new label will put them above the law,” said Scott. “It won’t. Baltimore will not let multibillion-dollar companies put profits over people and harm our communities through illegal gambling.”

Notably, the city’s complaint against Kalshi included Robinhood, Webull and Coinbase as partners with the prediction market platform. All companies were accused of deceptive practices by marketing sports contracts as something that can ”lawfully be purchased and traded in Maryland.”

The legal action against prediction market companies was the latest conflict between US state and federal authorities, and many experts expect it to end with an appeal to the Supreme Court. The US Commodity Futures Trading Commission (CFTC), under Chair Michael Selig, and companies have argued that event contracts on prediction markets amount to “swaps” within its purview, while both Baltimore lawsuits and other state-level authorities dispute that claim.

“City-specific action runs counter to the CFTC’s established framework for regulating prediction markets,“ a Polymarket spokesperson told Cointelegraph in response to the lawsuit. “As courts have recognized, prediction markets on CFTC-registered exchanges are governed by federal law, not a patchwork of state and local rules.”

Related: Judge stays CFTC’s case against US soldier over prediction market bets

Related Questions

QWhat is the main legal allegation against Kalshi and Polymarket by the City of Baltimore?

AThe City of Baltimore alleges that Kalshi and Polymarket operated illegal, unlicensed sports-betting platforms and misled users about the legality and regulatory status of their products, arguing that their event contracts constitute unlawful wagers under state laws.

QWhich companies were named as partners of Kalshi in the city's complaint?

AThe city's complaint against Kalshi named Robinhood, Webull, and Coinbase as partners with the prediction market platform.

QWhat core regulatory argument do prediction market companies and the CFTC make in their defense?

APrediction market companies and the CFTC argue that event contracts on these platforms amount to 'swaps,' which fall under federal regulatory purview and the CFTC's established framework, not state or local gambling laws.

QAccording to Mayor Brendan Scott, what motivates the city's legal action against these companies?

AMayor Brendan Scott stated that the city will not let multibillion-dollar companies put profits over people and harm communities through illegal gambling, implying the action is to protect the public from unlicensed gambling operations.

QWhat broader legal conflict does the article suggest this case is a part of?

AThe article suggests this case is part of the latest conflict between US state/federal authorities over the classification and regulation of prediction markets, with many experts expecting it could ultimately be appealed to the Supreme Court.

Related Reads

Shenzhen Chip 'Little Giant' Restarts IPO, with Lei Jun, Huawei, and BOE Holding Shares

"Cloud Valley Technology, a Shenzhen-based 'little giant' specializing in AMOLED display driver chip design, has restarted its process for an A-share IPO by filing for listing tutoring with the Shenzhen Securities Regulatory Bureau on September 10th, with GF Securities as the tutoring institution. Established in May 2012 and listed on the Hong Kong Stock Exchange in May 2025, the company is a leader in its field. According to its prospectus, founder Gu Jing serves as Chairman and CEO. Major investors include Xiaomi's Yangtze River Fund and Tianjin Jinmi (controlled by Lei Jun), Huawei's Hubble Technology, BOE Technology, and Qualcomm China. Despite continuous revenue growth from 5.51 billion yuan in 2022 to 11.06 billion yuan in 2025, Cloud Valley has yet to achieve profitability, reporting net losses in the same period. R&D expenses have remained substantial, reaching 2.66 billion yuan in 2025. The company specializes in two product lines: AMOLED display driver chips primarily for smartphones, and Micro-OLED display backplanes/drivers for AR/VR devices. Frost & Sullivan data positions the company as the world's fifth-largest and China's largest supplier of AMOLED display driver chips by 2024 sales volume. It also holds a significant 40.7% market share in the global Micro-OLED display backplane/driver market. Notably, it was the first Chinese mainland company to supply AMOLED driver chips to major consumer electronics brands and has cumulatively sold over ten million chips to downstream brand customers. This marks Cloud Valley's second attempt for an A-share listing after withdrawing an application for the STAR Market in 2023."

marsbit8h ago

Shenzhen Chip 'Little Giant' Restarts IPO, with Lei Jun, Huawei, and BOE Holding Shares

marsbit8h ago

Trading

Spot
活动图片