# All about Lists in Tradetron
Author: Huzefa Kudrati
Author URL: https://tradetron.tech/blog/author/huzefa-kudrati
Published: 2020-04-17
Category: Technical
Category URL: https://tradetron.tech/blog/category/technical
Meta Title: All about Lists in Tradetron
Meta Description: Before we understand what are Lists / Multiple instruments, you need to first make your strategy and run on a single instrument.
Tags: guides, tutorials
Tag URLs: guides (https://tradetron.tech/blog/tag/guides), tutorials (https://tradetron.tech/blog/tag/tutorials)
URL: https://tradetron.tech/blog/lists-in-tradetron

Before we understand what are **Lists / Multiple instruments**, you need to first make your strategy and run on a single instrument.

​ [Click here](https://tradetron.tech/blog/bollinger-bands-based-startegy-guide-clfakuex0185081kql76ctwjt3) to first make a simple Bollinger based mean reversion strategy

Assuming now, that you have your entry condition ready and tested on Tradetron for a single instrument, and you want the same condition to check multiple instruments and take positions in those instruments accordingly

Here is where the **List** option helps you

**List** is nothing but a collection of instruments which you create beforehand and then assign it to your condition for checking, just like you would to a single instrument

**Note:**

You can only make a list pertaining to the same exchange type. A collection of cash instruments can be clubbed, A collection of future instruments can be clubbed, etc.

You cannot create a list of cash and futures together.

How do you create and use them?

When you create your strategy, next to your set number, you will see three dots

Click the three dots to open a menu wherein you can click **+ADD** to create a new list

![01](https://prod.superblogcdn.com/site_cuid_clef5mzfn214481lk4138lvno3/images/first0-1678938804374-compressed.png)

Once clicked, the system will take you to a new window, which I called List builder

![listbuilder](https://prod.superblogcdn.com/site_cuid_clef5mzfn214481lk4138lvno3/images/ksnip20200422-224203-1678938805045-compressed.png)

![createdlist](https://prod.superblogcdn.com/site_cuid_clef5mzfn214481lk4138lvno3/images/screenshot2020-04-22percent20tradetronpercent20-percent20editpercent20strategypercent281percent290-1678938805716-compressed.png)

**Name:** This section is where you name your collection / list

**Exchange:** Select the exchange, once selected, you cannot change it for the list

**Underlying:** Once the exchange is selected, this dropdown will be populated with corresponding instruments

**Add button:** When you select an instrument in the underlying, you will have to click Add to add that instrument in the collection

**Save:** Once all the instruments are added, you can click **Save button** to save your list

**Note:**

1\. The list you create is local to your account, which means, once created, it will only be visible to inside your account.

2\. Do not add the same instrument more than once in the list as it will trigger the system to take a position in the same instrument twice when the condition is satisfied

Once the list is created, you will have to select it from the drop-down

![listselected](https://prod.superblogcdn.com/site_cuid_clef5mzfn214481lk4138lvno3/images/043-1678938806409-compressed.png)

**Note:**

**1\.** The selected list will be available on to the corresponding Set

2\. If you create another set (Which checks trades for the opposite direction) you will have select the list in Set 2 as well

![positionbuilder](https://prod.superblogcdn.com/site_cuid_clef5mzfn214481lk4138lvno3/images/positionpercent20builder-1678938807104-compressed.png)

Now inside the positioning builder, you can select your newly created list

![positionkeyword](https://prod.superblogcdn.com/site_cuid_clef5mzfn214481lk4138lvno3/images/positionpercent20keyword-1678938807777-compressed.png)

The operation of the list is very similar to selecting a single instrument

The system will first pick up one instrument from the list, check the condition If satisfied take the position

Then move on to the next instrument from the list

![workflow](https://prod.superblogcdn.com/site_cuid_clef5mzfn214481lk4138lvno3/images/slide10-1678938808416-compressed.jpg)

## Position builder

If you have selected your list, the positioning builder will automatically pick up your list for execution

![positionbuilder](https://prod.superblogcdn.com/site_cuid_clef5mzfn214481lk4138lvno3/images/screenshot2020-04-23percent20tradetronpercent20-percent20editpercent20strategy-1678938809086-compressed.png)

This is how a List of instruments is created and used.

If you have any queries, please write us at support@tradetron.tech


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