Placing Orders
How to place trades on Doji.
How to Place an Order
Pick a Side
Select Yes (green) or No (red).
Choose Order Type
Use the dropdown to select Market, Limit, Split, or Merge.
Set Price and Amount
For limit orders, enter the price you're willing to pay per share (prices range from $0.01 to $0.99). Enter how many shares you want or how much USDC to spend — Doji calculates the other value for you.
Submit
Click Trade to submit your order.
Order Types
The order form has four modes:
- Market — Executes immediately at the best available price. Uses either FOK or FAK depending on your Settings.
- Limit — Rests on the orderbook at your chosen price until filled or cancelled.
- Split — Convert pUSD into a matched pair of Yes and No tokens.
- Merge — Convert equal Yes and No tokens back into pUSD.
Market Order Execution
Market orders use one of two execution modes (configurable in Settings):
- FAK (Fill-And-Kill) — Fills as much as possible right away, then cancels the rest. Good when you want partial fills.
- FOK (Fill-Or-Kill) — Must fill completely and immediately, or the entire order is cancelled. No partial fills.
Limit Order Expiration
Limit orders default to GTC (Good-Til-Cancelled) — they stay on the orderbook until filled or cancelled. You can set an expiration using the presets:
- GTC — No expiration (default).
- 5m — Expires in 5 minutes.
- 1h — Expires in 1 hour.
- Custom — Pick a specific date and time.
Setting an expiration effectively makes it a GTD (Good-Til-Date) order.
Post-Only
Limit orders can be marked post-only. A post-only order only rests on the book — if it would fill immediately, it's rejected. This guarantees you're always the maker (zero fees).
Market orders on Polymarket are limit orders priced to fill immediately. The Market/Limit distinction in the order form controls whether Doji sets the price for you (market) or you set it yourself (limit).
Displayed Price
The price shown on a market is the midpoint between the best bid and best ask. If the spread is wider than $0.10, the last traded price is shown instead. You won't necessarily trade at the displayed price — you pay the ask when buying or receive the bid when selling.
Limits
- Tick size — Minimum price increment, usually $0.01 or $0.001.
- Minimum order — 5 shares for limit orders, $1 for market buy orders.