> For the complete documentation index, see [llms.txt](https://docs.tread.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tread.fi/other-trading-modes/multi-spread-basis-portfolio-trading/directional-bias.md).

# Directional Bias

Directional bias control allows you to influence the timing and distribution of your buy and sell orders based on your market outlook.

**How Directional Bias Works**

* **Range**: -1 to +1 (neutral at 0)
* **Positive Bias (+1)**: Favors long positions by front-loading buy orders and back-loading sell orders
* **Negative Bias (-1)**: Favors short positions by front-loading sell orders and back-loading buy orders
* **Neutral (0)**: Equal timing distribution for both buy and sell orders

**Additional Notes on Directional Bias**

* **Alpha Tilt Adjustment**: Directional bias maps linearly to alpha tilt adjustments (±1 → ±0.2 alpha tilt)
* **Buy Orders**: Positive bias adds positive alpha tilt (front-loads), negative bias adds negative alpha tilt (back-loads)
* **Sell Orders**: Positive bias adds negative alpha tilt (back-loads), negative bias adds positive alpha tilt (front-loads)
* **Risk Management**: Extreme bias values (±1) require up to 20% additional margin to account for increased directional exposure

**Use Cases**

* **Bullish Outlook**: Set positive bias to capture upward price movements more aggressively
* **Bearish Outlook**: Set negative bias to benefit from downward price movements
* **Market Neutral**: Keep at 0 for balanced market making without directional exposure


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.tread.fi/other-trading-modes/multi-spread-basis-portfolio-trading/directional-bias.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.