Kalshi Owns 89% of the Prediction Market Pie While Regulators Argue Over Who Gets to Taste It

The U.S. prediction market is cooking, and a new Bank of America report suggests the kitchen is getting crowded—with regulators elbowing each other for counter space. Total weekly volume ticked up 4% week-over-week, because apparently, Americans can't resist betting on whether the economy will crash or if it will just mildly shuffle toward doom.

Kalshi, operating as a federally regulated exchange, flexed with a 6% volume bump. Crypto.com eked out modest gains like a student who did the bare minimum on a group project. Meanwhile, Polymarket—which was absolutely destroying it last quarter—watched volumes crater by 16%. Ouch.

The market share breakdown reads like a hostile corporate takeover: Kalshi now commands roughly 89% of all measured U.S. prediction market volume. Polymarket clings to 7%, and Crypto.com sits at a humble 4%, probably wondering if it should've packed lunch.

But this isn't just about who's winning the popularity contest. It's about regulatory moats—the kind of moat that doesn't involve knights but does involve a lot of lawyers. Kalshi operates under Commodity Futures Trading Commission (CFTC) oversight, classifying its contracts—whether tied to elections or sports—as derivatives. Polymarket runs on blockchain rails and has historically avoided the U.S. regulatory perimeter like a cat avoiding a bath, drawing global liquidity while facing domestic friction.

The regulatory trench warfare is intensifying. Nevada and Massachusetts have secured preliminary injunctions against Kalshi at the state level, proving that state regulators are very passionate about telling adults what they can and cannot bet on. New Jersey, however, lost an appeal limiting its ability to enforce gambling laws against the firm—because nothing says "tough on crime" like losing in court.

The CFTC isn't staying quiet. The agency has sued multiple states, arguing federal law supersedes state gambling rules. Leadership has drawn a clear line: sports betting is entertainment, while event contracts are financial tools for hedging risk. Translation: "We're not gambling, we're making sophisticated financial decisions with your rent money."

The outcome matters more than your ex's opinion on your life choices. A federal win lets platforms like Kalshi scale nationally under one framework. A loss pushes everything into a fragmented, state-by-state model—think online sports betting, but slower, messier, and with more lawyers.

Crypto firms aren't sitting this out like your Web3 Discord group sits on crypto Twitter takes. Polymarket remains one of the largest global platforms and continues to draw eyeballs during major events, where volumes can spike harder than Bitcoin on a ETF approval rumor. Meanwhile, Crypto.com and Coinbase (COIN) are testing prediction market products, signaling that centralized exchanges want a seat at the grown-up table.

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