# Index Construction

**What is index construction?**

Index construction refers to the process of selecting and weighting a group of securities to create an index that represents a particular market or sector.

The process of index construction in finance is critical for investors, as it provides a benchmark against which to measure the performance of their investments.<br>

What is custom indexing?

Custom indexing in finance refers to the process of [creating an index that is tailored to a specific client's investment objectives or preferences. ](https://indexone.io/customindexing)

This approach allows investors to create an index that reflects their specific views on market trends or their investment strategy.<br>

Here are the articles in this section:

{% content-ref url="index-construction/universe-weighting-and-specifications" %}
[universe-weighting-and-specifications](https://indexone.gitbook.io/docs/product-guides/index-construction/universe-weighting-and-specifications)
{% endcontent-ref %}

{% content-ref url="index-construction/drag-functionality" %}
[drag-functionality](https://indexone.gitbook.io/docs/product-guides/index-construction/drag-functionality)
{% endcontent-ref %}

{% content-ref url="index-construction/index-universe" %}
[index-universe](https://indexone.gitbook.io/docs/product-guides/index-construction/index-universe)
{% endcontent-ref %}

{% content-ref url="index-construction/how-to-build-an-index" %}
[how-to-build-an-index](https://indexone.gitbook.io/docs/product-guides/index-construction/how-to-build-an-index)
{% endcontent-ref %}

{% content-ref url="index-construction/how-to-use-custom-code-to-build-an-index" %}
[how-to-use-custom-code-to-build-an-index](https://indexone.gitbook.io/docs/product-guides/index-construction/how-to-use-custom-code-to-build-an-index)
{% endcontent-ref %}


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