Kalshi has rolled out perpetual futures tied to its US 500 stock index, letting traders take leveraged long or short positions that never expire. The move marks the prediction market's latest push into stock market derivatives, a space already populated by crypto-native platforms.
What perpetual futures actually are
Perpetual futures are derivative contracts without a settlement date. Unlike traditional futures, which expire on a set calendar day, perps roll indefinitely. Traders post margin and pay or receive a funding rate that keeps the contract price anchored to the underlying index. On Kalshi, the underlying is the company's own US 500 stock index, a benchmark that tracks a broad basket of large US equities.
Because there's no expiry, users don't have to roll contracts forward. That's the main selling point. It also means leverage can compound quietly in the background — a feature that has made perps popular on offshore crypto exchanges and a persistent headache for regulators in the US.
Why Kalshi is moving into derivatives
Kalshi spent years fighting to offer event contracts on everything from elections to economic data, and it won a key legal battle against the CFTC in 2024. Since then, it has been steadily widening its product shelf. Stock index exposure is the logical next step: it's a high-volume, high-interest market, and Kalshi already has the regulatory plumbing to list derivatives under CFTC oversight.
The company hasn't disclosed volume targets or fee schedules for the new product. It also hasn't said whether the perpetuals will be available in all US states or restricted in any way.
The competitive backdrop
Kalshi isn't the first to offer perpetuals on a stock index. Offshore exchanges have listed similar products for years, though they operate outside US regulatory reach. What Kalshi brings is a domestic, regulated venue — the same pitch it used to win market share in prediction markets.
Traditional futures exchanges like CME Group already offer equity index futures, but those contracts expire. The perpetual model has largely been a crypto phenomenon until now. Kalshi's entry tests whether US traders want the same never-expiring structure for stock exposure, and whether the CFTC is comfortable with it.
What's still unknown
There's no word yet on leverage limits, margin requirements, or which hours the product will trade. Those details matter. Perpetual futures can amplify losses quickly, and US regulators have historically been wary of retail access to high-leverage derivatives. Kalshi's existing event contracts are fully collateralized — users can't lose more than they put in. Perps, by contrast, are typically margined. Whether Kalshi will require full collateral or allow leverage is the single biggest open question.
The company has also not said when trading will go live beyond the launch announcement. For now, the product exists. The rules around it are still being written.
