IEX Cloud

API

Realtime & Historical Financial Market Data API

Overview

IEX Cloud offers RESTful endpoints for realtime stock quotes, historical price charts, market indices, crypto assets, company news, earnings reports, and financial statements. Responses are in JSON format. Key endpoints include /stock/{symbol}/quote (realtime prices), /stock/{symbol}/chart/{range} (historical data), /market/index/{symbol} (indices like S&P 500), and /crypto/{symbol}/quote (crypto metrics). Ideal for building financial dashboards, algorithmic trading tools, portfolio trackers, or integrating market data into fintech apps.

Example Integration (JavaScript)

script.js JS


fetch('https://iexcloud.io/docs/api/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON Responses
Realtime Market Data
Historical Price Charts
Multi-Asset Coverage (Stocks, Crypto, Indices)
Company Fundamentals (Earnings, News)

Frequently Asked Questions

? Is IEX Cloud free to use?

Yes, IEX Cloud offers a free tier with limited access (e.g., 500k monthly messages, delayed data for some assets). Paid plans unlock higher limits, realtime data, and advanced features.

? Does IEX Cloud require an API Key?

Yes, all requests need an API key, obtainable by signing up for an IEX Cloud account.

? What is the response format for IEX Cloud API requests?

All responses are in JSON format, compatible with most programming languages and applications.

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Tool Info

Pricing Freemium

Category Finance

Platform Public API

Pros

⊕ Comprehensive Data Coverage
⊕ Reliable Realtime & Historical Feeds
⊕ Scalable Freemium Pricing
⊕ Intuitive Endpoints
⊕ Extensive Documentation

Cons

⊖ Rate Limits on Free Tier
⊖ Advanced Features Require Paid Plans
⊖ Limited Data Depth in Basic Tiers
⊖ No XML Support