AxionQuant delivers market data, company fundamentals, financial statements, and alternative datasets through a fast, reliable REST API.

Get up and running in minutes with simple endpoints, predictable responses, and comprehensive coverage across equities, earnings, fundamentals, ownership data, and more. Focus on building your product, not cleaning data.

Developer quickstart

Make your first API request in minutes. Learn the basics of the AxionQuant platform.

Get started Create API key

const { Axion } = require('@axionquant/sdk');
const API_KEY = 'axn_123';
const client = new Axion(API_KEY);

const prices = await client.stocks.prices('AAPL', {
  frame: 'daily',
  from: '2025-12-01',
  to: '2025-12-19'
});
console.log(prices);

CLIENT LIBRARIES

$pip install axionquant-sdk

axionquant-sdk

OpenAPI Specification

Machine-readable schema for every endpoint - import into Postman, Insomnia, or paste into any LLM.

Open

https://axionquant.com/openapi.json

llms.txt

Machine-readable docs for LLMs - copy the link and paste it into any LLM to generate perfect code from open-ended prompts.

https://axionquant.com/llms.txt?v=2

Authentication

All API requests require authentication using your API key. You can obtain your API key from the Dashboard

 https://api.axionquant.com

API Key Usage

Include your API key in one of the following ways:

x-api-key: YOUR_API_KEY

HTTP Header (Recommended)

Authorization: Bearer YOUR_API_KEY

Authorization Header

?apiKey=YOUR_API_KEY

Query Parameter

Authentication Examples

JavaScript (Fetch API)

async function fetchStockData(ticker) {
  const response = await fetch(`https://api.axionquant.com/stocks/${ticker}`, {
  headers: { 'x-api-key': 'your-api-key-here' }
});
return await response.json();
}

Python (Requests)

import requests
def get_stock_data(ticker, api_key):
url = f"https://api.axionquant.com/stocks/{ticker}"
params = {"apiKey": api_key}
return requests.get(url, params=params).json()

Bash (cURL)

curl -X GET "https://api.axionquant.com/stocks/AAPL"
-H "Authorization: Bearer YOUR_API_KEY"

Setting Up Your Environment

Create an API key

Create an API key in the dashboard here, which you'll use to authenticate all requests to the API.

Store the key as a managed secret and pass it via an environment variable or your app's config.

.env

AXION_API_KEY=<your_api_key_here>

Install the SDK

Install the official SDK for your language. We'll also use it to load your API key from an environment variable.

pip install axionquant-sdk python-dotenv

Authenticate fetch requests

All API requests require your API key. Include it in one of the following ways - we recommend using the x-api-key header.

Never expose your API key in client-side code. Always make requests from a backend server or use environment variables.

// HTTP Header (Recommended)
const response = await fetch('https://api.axionquant.com/stocks/AAPL', {
  headers: {
    'x-api-key': process.env.AXION_API_KEY
  }
});

// Authorization Bearer
const response = await fetch('https://api.axionquant.com/stocks/AAPL', {
  headers: {
    'Authorization': `Bearer ${process.env.AXION_API_KEY}`
  }
});

Make your first SDK request

Retrieve real-time price data for any stock ticker. This endpoint is available on all plans.

const { Axion } = require('@axionquant/sdk');

const client = new Axion(process.env.AXION_API_KEY);
const ticker = await client.stocks.ticker('AAPL');
console.log(ticker);

Run the code

node example.js

You should see a response like this:

{
  "symbol": "AAPL",
  "price": 175.34,
  "change": 1.25,
  "changePercent": 0.72,
  "volume": 45678900,
  "marketCap": 2750000000000,
  "timestamp": "2024-01-15T14:30:00Z"
}

Next steps

Market Data

Real-time and historical prices, quotes, equities, ETFs, indices, and market metrics.

Alternative Data

ESG metrics, sentiment signals, supply chain intelligence, and other non-traditional datasets.

Fundamentals

Financial statements, earnings, revenue, balance sheets, cash flow, and company metrics.

Macros & Signals

Economic indicators, macroeconomic data, quantitative signals, and market regime analytics.

ETFs API

The ETFs API provides comprehensive data on Exchange-Traded Funds including fund information, sector weights, geographic exposure, holdings, and fund-of-funds exposure analysis. This data is essential for ETF research, portfolio construction, and investment analysis.

GET/etfs/:ticker/holdings

Retrieves the current top holdings of an ETF with detailed position information including shares held, market value, and percentage weights. Critical for analyzing concentration risk and understanding the ETF's underlying exposures.

Path Parameters

Parameter	Type	Required	Description
ticker	string	Required	ETF ticker symbol (e.g., "SPY", "QQQ", "VTI")

Examples:

https://api.axionquant.com/etfs/QQQ/holdings

https://api.axionquant.com/etfs/SPY/holdings

Response Fields

ticker string

Holding company ticker

name string

Holding company name

weight string

Formatted weight percentage

shares number

Number of shares held

marketValue number

Total market value in USD

rawWeight number

Raw weight as decimal (0.0-1.0)

Top Holdings

Request

Sample code

1from axion import Axion
2client = Axion(api_key='axn_123')
3
4holdings = client.etfs.holdings('SPY')
5print(holdings)

Response

[
  {
    "ticker": "NVDA",
    "name": "NVIDIA Corporation",
    "weight": "7.17%",
    "shares": 305156465,
    "marketValue": 44519276678.85,
    "rawWeight": 0.0716544211188534
  },
  {
    "ticker": "AAPL",
    "name": "Apple Inc.",
    "weight": "6.95%",
    "shares": 188603226,
    "marketValue": 43190138754,
    "rawWeight": 0.0695151543630329
  },
  {
    "ticker": "MSFT",
    "name": "Microsoft Corporation",
    "weight": "6.17%",
    "shares": 92204348,
    "marketValue": 38309984550.52,
    "rawWeight": 0.0616604754349895
  }
]

GET/etfs/:ticker/holdings/all

Retrieves the complete list of all holdings for an ETF with weight percentages and the last updated date. Unlike the top holdings endpoint, this provides the full portfolio composition including smaller positions.

Path Parameters

Parameter	Type	Required	Description
ticker	string	Required	ETF ticker symbol (e.g., "SPY", "QQQ", "VTI")

Examples:

https://api.axionquant.com/etfs/QQQ/holdings/all

https://api.axionquant.com/etfs/SPY/holdings/all

Response Fields

name string

Holding company name

ticker string

Holding company ticker

weight string

Formatted weight percentage

rawWeight number

Raw weight as decimal (0.0-1.0)

since string

Date the holding data was last updated

All Holdings

Request

Sample code

1from axion import Axion
2client = Axion(api_key='axn_123')
3
4holdings = client.etfs.holdings_all('SPY')
5print(holdings)

Response

[
  {
    "name": "NVIDIA Corporation",
    "ticker": "NVDA",
    "weight": "7.17%",
    "rawWeight": 0.0716544211188534,
    "since": "2024-03-15"
  },
  {
    "name": "Apple Inc.",
    "ticker": "AAPL",
    "weight": "6.95%",
    "rawWeight": 0.0695151543630329,
    "since": "2024-03-15"
  },
  {
    "name": "Microsoft Corporation",
    "ticker": "MSFT",
    "weight": "6.17%",
    "rawWeight": 0.0616604754349895,
    "since": "2024-03-15"
  }
]

Introduction

Developer quickstart

Authentication

API Key Usage

Authentication Examples

Setting Up Your Environment

Create an API key

Install the SDK

Authenticate fetch requests

Make your first SDK request

Run the code

Next steps

ETFs API

Path Parameters

Examples:

Response Fields

Top Holdings

Path Parameters

Examples:

Response Fields

All Holdings