---
title: "Effective Number of Assets"
method: POST
path: "/portfolios/analysis/effective-number-of-assets"
tags: ["Portfolio Analysis"]
---

# Effective Number of Assets

`POST /portfolios/analysis/effective-number-of-assets`

Compute the effective number of assets of a portfolio.

References
* [Steven Strongin, Beating Benchmarks — A Stockpicker's Reality: Part 2, Goldman Sachs, Nov. 30, 1999](https://www.gspublishing.com/content/research/en/reports/1999/11/30/09027316-5afb-11d7-855c-ef4fa3b4f04c.pdf)

## Request body

- object
  - `portfolios` object[], required
    - `assets` integer, required — The number of assets
    - `assetsWeights` number[], required — assetsWeights[i] is the weight of the i-th asset in the portfolio, in percentage

## Response `200`

OK

- object
  - `portfolios` object[], required
    - `portfolioEffectiveNumberOfAssets` number, required — The effective number of assets of the portfolio

---

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