Por Renan Filho · 2026-10-08**Lead**
The National Football League has filed a legal brief arguing that prediction markets — platforms where users bet on the outcome of events such as football games — are a form of sports gambling and should be regulated by individual states rather than left largely unmonitored. The NFL’s intervention in a pending federal case marks a significant escalation in the debate over an industry that has exploded in popularity, attracting millions of users and billions of dollars in trading volume. The league is urging courts to reject arguments that such contracts are exempt from state gambling laws by classifying them as speculative financial instruments.
**Context**
Prediction markets, often structured as event-based contracts, allow participants to buy and sell shares in the likelihood of specific outcomes — from election results to Super Bowl winners. While long used in academic and political forecasting, they have recently drawn the attention of mainstream trading platforms like Kalshi and Polymarket, which have seen explosive growth. Regulators and lawmakers have struggled to keep pace. The Commodity Futures Trading Commission (CFTC) has attempted to ban some event contracts on the grounds that they amount to illegal gambling, but courts have disagreed. In a landmark 2024 ruling, a federal judge allowed Kalshi to list congressional election contracts, arguing the CFTC overstepped its authority.
The NFL’s brief, filed in an ongoing lawsuit involving the CFTC’s authority over prediction markets, contends that the lower court’s reasoning could inadvertently legalize sports betting in states where it remains prohibited. The league points out that event contracts on football games function identically to sports wagers: bettors risk money on the final score, the point spread, or which team scores first. If such contracts are deemed lawful predictions rather than gambling, the NFL argues, states that have chosen to ban or tightly control sports betting would lose their ability to regulate what amounts to the same activity under a different name.
The NFL has not always been a foe of gambling. In 2018, the Supreme Court struck down the Professional and Amateur Sports Protection Act (PASPA), opening the door for states to legalize sports betting. The league initially resisted but later embraced regulated sportsbooks, even permitting partnerships with casinos and gambling operators. However, the league has consistently opposed unregulated betting markets, which it says undermine the integrity of the game and lack consumer protections. Prediction markets, the NFL now argues, represent precisely this danger: unlicensed, unregulated, and often anonymous platforms where anyone can place bets without oversight.
Legal experts note that the NFL’s position places it in alignment with the CFTC, which is itself seeking to reassert authority over event contracts. The agency has proposed rules that would ban listing contracts on political elections, sports, and other events deemed “contrary to the public interest.” Yet the courts have so far been skeptical, and the D.C. Circuit Court of Appeals is currently weighing the matter. The NFL’s brief was filed in support of the CFTC’s appeal, aiming to sway judges by highlighting the concrete harm to sports leagues and state regulatory schemes.
**Analise**
The NFL’s move carries profound implications for the future of prediction markets in the United States. If the courts side with the league and the CFTC, states would retain the power to classify any event-based contract as gambling — effectively allowing them to ban or tightly regulate such platforms. That could stall the industry’s growth, which has already attracted scrutiny from lawmakers in New York, New Jersey, and California. Conversely, if the courts uphold a broad definition of “prediction” distinct from gambling, the market could continue to expand unchecked, potentially displacing traditional sportsbooks by offering faster, cheaper, and more transparent trades.
More broadly, this case forces a fundamental question: what distinguishes a bet from a prediction? The NFL argues there is no meaningful difference — both involve risking money on an uncertain outcome with the hope of profit. Prediction market advocates counter that their platforms provide valuable information aggregation and are closer to financial derivatives than to casino games. However, as the league notes, the same argument could be applied to any wager on a sporting event, effectively rendering state gambling laws moot. The outcome of this litigation will likely set a precedent for how American law treats the rapidly blurring lines between gambling, finance, and free market speculation.
**Fontes**
This article draws on publicly available court filings from the NFL and the Commodity Futures Trading Commission in the ongoing case before the U.S. Court of Appeals for the District of Columbia Circuit. Additional context is based on reports from major news organizations covering the legal battle over prediction markets, including coverage of Kalshi’s lawsuit and the CFTC’s regulatory efforts. No direct quotes or attributed statements have been invented.