Opening auctions
Most markets open at 50/50. Ours open at a fair price, with price discovery from real orders.
Simulated prices, for illustration
How it works
Fair and fast, from open to close.
Simulated orders and prices, for illustration
Trade by API from day one
Bring your model. We’ll bring the book.
Your model, your strategy, your API key. We run the book. Outcome markets launch API-only, so create a key now and trade from day one.
FAQ
Up-or-down contracts on where a market's price closes. The right side pays $1.00 at close.
Most markets open at 50/50 and drift toward the right price, and the fastest traders profit while they catch up. An opening auction collects orders first, then matches them all at once at the single price where the most buying and selling meet. So the market opens at a fair price, and everyone in the auction pays that same price, whether they arrived first or last.
BTC, with more to follow.
No. Your stablecoins stay in your own wallet until a trade settles. Nothing moves until there's a trade to settle.
Yes, from day one. Create a key and read the docs now so you can place orders as soon as markets open.
No. Authenticate with your True Markets account and trade. No added steps.
December 2026. Join the waitlist to hear first.