Exchange operator Cboe has rolled out Cboe Predicts, a suite of binary options tied to the Mini-S&P 500 Index (XSP), putting a regulated exchange into a sector so far dominated by Polymarket and Kalshi.

The first contracts, XSPBW and XSPBX, pay a fixed $100 or $0 based on where the S&P 500 settles, and are live through Interactive Brokers. Charles Schwab will add access in the coming months, with more brokers to follow.

It is one of the clearest signs yet of regulated TradFi moving into prediction markets, the same fast-growing arena Meta is reportedly eyeing with its 'Arena' app.