How prices and fills work in the simulated environment, and how to dispute a fill you think was wrong.
Each instrument's mark is a reference price from live Hyperliquid data, with outlier filters. More venues will be blended in once agreements are signed, so pricing keeps running if one feed fails.
| Rule | What it means |
|---|---|
| Slippage | Market orders walk the reference venues' order-book depth. |
| Size | Large orders fill at worse prices as depth is consumed; a liquidity cap applies. |
| Fees and funding | Trading fees and funding payments are applied and count toward profit and loss. |
Fee and funding rates are set out on the markets page.
Every order and fill is stored and can be replayed against reference data. If you think a fill was wrong, submit a dispute within 7 days from your dashboard. See the outage, dispute, and inactivity policy.
The risk engine recomputes equity on every tick and closes positions quickly once a breach is detected, so losses cannot run past your floor.
All trading is simulated. A simulated fill can differ from the price, time, or size a real market would have given.
