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On CHOK, users trade with market orders: the order fills right away against the best available prices.
Limit orders (orders that wait on the book at your price) are not available to users right now.

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Buy

  1. Open a market and choose an outcome, for example Yes.
  2. Enter the amount of chUSD to spend.
  3. Check the estimated shares and average price, then confirm.
The order fills against the best asks first, then the next best, until your amount is used. Minimum: a buy must be worth at least 1 chUSD.

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Sell

  1. Open a market where you hold shares and choose Sell.
  2. Enter the number of shares to sell.
  3. Confirm.
Sells have no minimum.

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Slippage protection

A market order includes a worst acceptable price. By default, it allows 1.5% past the worst price in your quote. If the book moves past it before your order arrives, the part that can’t fill at that price isn’t filled. If that worst acceptable price is 0.10 or more away from the current best price, the app warns you before you confirm.

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Fill rules

You can choose how a market order handles a partial fill in Settings → Market order type:

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Prices and ticks

  • Prices are between the tick size and 1 − tick size, for example 0.01 to 0.99.
  • See Prices & Orderbook for tick sizes.

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When you can’t trade

An order is rejected if:
  • You haven’t verified your phone
  • The market is closed, paused or resolved
  • Trading is paused for the whole platform, for example between seasons
  • Your chUSD balance (to buy) or share balance (to sell) is too low
See Error Messages for the exact messages.