Comparison · updated July 2026
Interactive Brokers Forecast Contracts vs ProphetX
Interactive Brokers Forecast Contracts and ProphetX are two of the most discussed prediction market platforms in the US. Here's a side-by-side look at how they compare on the factors that actually matter for traders.
Interactive Brokers Forecast Contracts
CFTC-regulated event contracts inside the IBKR trading platform.
ProphetX
Peer-to-peer sports betting exchange.
Rating
Interactive Brokers Forecast Contracts
4.1
ProphetX
3.9
Best for
Interactive Brokers Forecast Contracts
Existing IBKR clients
ProphetX
Exchange-style sports bettors
Regulation
Interactive Brokers Forecast Contracts
CFTC-regulated
ProphetX
State-by-state
US availability
Interactive Brokers Forecast Contracts
Available
ProphetX
Available
Fees
Interactive Brokers Forecast Contracts
$0.02–$0.10 per contract
ProphetX
1–2% commission
Mobile
Interactive Brokers Forecast Contracts
Good
ProphetX
Good
Markets
Interactive Brokers Forecast Contracts
Economy, Financial events, Politics
ProphetX
Sports
Payment
Interactive Brokers Forecast Contracts
ProphetX
Founded
Interactive Brokers Forecast Contracts
ProphetX
Verdicts
Who wins, category by category
Best overall
Interactive Brokers Forecast Contracts
Higher composite rating across our methodology.
Best for beginners
Interactive Brokers Forecast Contracts
Cleaner onboarding and a more polished consumer experience.
Best for regulation
Interactive Brokers Forecast Contracts
Operates as a CFTC-designated contract market.
Best for liquidity
Interactive Brokers Forecast Contracts
Deepest order books on headline markets.
Best for market variety
Interactive Brokers Forecast Contracts
Wider catalogue of available event contracts.
Final take
Should you choose Interactive Brokers Forecast Contracts or ProphetX?
Interactive Brokers Forecast Contracts comes out narrowly ahead in our methodology, but both platforms have a clear lane. Choose Interactive Brokers Forecast Contracts for existing ibkr clients, and ProphetX for exchange-style sports bettors.