Kalshi Faces Supreme Court Battle as Inflation Volatility Fuels Prediction Market Hedging Demand

Gate News message, April 20 — Prediction market platforms Kalshi and Polymarket are heading toward a Supreme Court legal showdown as inflation surges and market turbulence accelerates, potentially reshaping how traders hedge economic and policy risks. On April 10, the Bureau of Labor Statistics reported inflation rose 3.3% over the past 12 months, with the Cleveland Federal Reserve’s forecasting tool pushing its April estimate even higher to 3.58%, potentially preventing Federal Reserve interest rate cuts or triggering hikes instead.

Meanwhile, stock markets reached all-time highs last week, as the S&P 500 (U.S. benchmark equity index) and Nasdaq Composite (U.S. technology-focused index) climbed to record levels, though the surge may be short-lived due to inflation pressures. Platforms like Kalshi and Polymarket allow users to trade contracts on real-world outcomes—from CPI (Consumer Price Index) readings and Federal Reserve rate decisions to election results and geopolitical events.

However, the legality of these platforms remains contested. Sports bets accounted for almost 85% of all wagers on Kalshi, generating $25 million in fees from March Madness betting alone in a single four-day period. This has drawn sharp pushback from state governments and Native American tribes, who argue Kalshi is running an illegal gambling operation. Courts in at least three states have sided with that view, while others have ruled in Kalshi’s favor, finding that its sports contracts fall under a category of financial instruments permitted by federal law—technically classified as “event contracts,” a type of swap under federal law.

If conflicting court rulings emerge, the case could reach the Supreme Court as early as next year. Legal experts note that Kalshi must navigate the Supreme Court’s 2018 Murphy v. NCAA decision, which stripped federal government sole authority over sports betting, and the 2024 Loper Bright ruling, which limited court deference to federal agencies. If the Supreme Court rules in favor of broader access to event contracts, prediction markets could become a legitimate complement to the $60 trillion commodities market, offering direct hedging tools for inflation risk, interest rates, and election-driven shocks.