Market Orders & Slippage Protection

A Market Order is used when speed is more important than the exact price. It executes immediately at the best available price currently offered across all aggregated venues.

How to Place a Market Order:

1. Select Market & Outcome.

2. Set Order Type: Toggle the switch to "Market".

3. Enter Amount: Input the USD value you want to trade (e.g., $1,000).

4. Review the "Effective Price":

   • The interface will show you a weighted average price. For a large order, you might buy $500 from Polymarket at 55 cents and $500 from Kalshi at 56 cents. The effective price would be 55.5 cents.

5. Set Slippage Tolerance:

   • Definition: Slippage is the difference between the expected price and the executed price due to market movement during the transaction.

   • Recommendation: Set this to 0.5% for liquid markets and 1.0% for volatile markets. If the price moves beyond this threshold during execution, the transaction will revert to protect your funds.

6. Execute: Click "Buy Now".