> ## Documentation Index
> Fetch the complete documentation index at: https://docs.qfex.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Order Entry

> Supported Order Types and TIFs

## Order Types

### Market Orders

* Execute immediately at the best available price.
* Provide **certainty of execution** but not certainty of price.
* Cannot include **Good-Till-Cancelled (GTC)** instructions.

### Limit Orders

* Specify both **quantity** and **price limit** (max for buy, min for sell).
* If not filled immediately, rest in the order book at the specified price.

### Add Liquidity Only (ALO) Orders

* Execute **only if they add liquidity**.
* If an ALO order would immediately match with an existing order, it is **cancelled** instead.

Any of the above types can optionally specify a `take_profit` and `stop_loss` price.
This stages *Stop Order(s)* at the exchange:

### Stop Orders

* Must be either `take_profit` or `stop_loss`.
* Convert to a Market Order when the Mark Price reaches the specified price.
* Act only to decrease position at the time of execution; otherwise, the order could be rejected, or other stop orders cancelled.

## Time In Force

### Fill-or-Kill (FOK)

* Must execute **entirely and immediately**, or be cancelled.
* Suitable for **large block trades** or hedging strategies.

### Immediate-or-Cancel (IOC)

* Executes any **immediately available portion**, cancelling the rest.
* Reduces risk of resting orders in volatile markets.

### Good-Till-Cancelled (GTC)

* Remains active until executed or manually cancelled.
* Applies only to **limit** and **ALO** orders (not market orders).
* Persists across sessions.

### Instruction Availability Table

| Order Type        | FOK | IOC | GTC |
| ----------------- | --- | --- | --- |
| **Market Orders** | ❌   | ✅   | ❌   |
| **Limit Orders**  | ✅   | ✅   | ✅   |
| **ALO Orders**    | ❌   | ❌   | ✅   |
| **Stop Orders**   | ❌   | ✅   | ❌   |