---
title: Impulse Score Rule
description: "  [![](https://portfolioboss.com/wp-content/uploads/2019/10/Impulse-Score-Rule-000.png)](https://portfolioboss.com/wp-content/uploads/2019/10/Impulse-Score-Rule-000.png)   This rule ranks your instruments based on their *percentage gain* during the past certain period. For example, if you're looking for instruments that have the *highest* percentage gain in the past 5 days, then set this rule…"
url: "https://portfolioboss.com/documentation/impulse-score-rule/"
updated: "2022-08-27"
category: "Chapter 7 - Filters & Rules"
---

# Impulse Score Rule

 

[![](https://portfolioboss.com/wp-content/uploads/2019/10/Impulse-Score-Rule-000.png)](https://portfolioboss.com/wp-content/uploads/2019/10/Impulse-Score-Rule-000.png)

 

This rule ranks your instruments based on their *percentage gain* during the past certain period.

For example, if you're looking for instruments that have the *highest* percentage gain in the past 5 days, then set this rule as the "highest" impulse score in the past "5 days".

 

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**1.**  The first parameter, "Lowest/Highest", defines whether you want to look for instruments that have the lowest or highest impulse score.

 

[![](https://portfolioboss.com/wp-content/uploads/2019/10/Impulse-Score-Rule-1st-Parameter.png)](https://portfolioboss.com/wp-content/uploads/2019/10/Impulse-Score-Rule-1st-Parameter.png)

 

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**2.**  The second parameter, "x days (or months)", defines the period to calculate the impulse score. That is, the percentage gain is calculated from the beginning of this period until today.

 

[![](https://portfolioboss.com/wp-content/uploads/2019/10/Impulse-Score-Rule-2nd-Parameter.png)](https://portfolioboss.com/wp-content/uploads/2019/10/Impulse-Score-Rule-2nd-Parameter.png)

 

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#### Notes:

 

- It is best to employ this rule in different flavors, for example the first rule looks at the *lowest* impulse score during the past 5 days, while the second rule looks for the *highest* impulse score during the past 6 months. 

 

[![](https://portfolioboss.com/wp-content/uploads/2019/10/Double-Impulse-Rules.png)](https://portfolioboss.com/wp-content/uploads/2019/10/Double-Impulse-Rules.png)

 

That way, you're essentially looking for instruments that are experiencing a dip during a generally upward trend, so hopefully once you enter that Position (at such a discount) it will rebound to your profit.

 

- Regarding the "Offset" and "Weight" parameters, please refer to the guide about [Ranking Panel](https://portfolioboss.com/documentation/ranking-panel-guide/#offsetweight).