Financial Data API for 2021

adamdeanwozney profile image 🇦​ 🇩​ 🇦​ 🇲​ 🇼​ 🇴​ 🇿​ 🇳​ 🇪​ 🇾​ ・1 min read

I may work for IEX Cloud, but I gotta say, IEX Cloud offers some pretty great features.

Curated financial data

Institutional grade data, including real-time and historical stock prices, fundamentals, forex, crypto and more - all in one API. Full U.S. market coverage, 95,000+ securities.

Flexible, scalable pricing

Get open access to a range of datasets with one subscription. No need to lock into long-term contracts with a high upfront payment.

Get started quickly

Access datasets in minutes with one easy-to-use API, so you can focus on building!

Designed for developers

Use your preferred implementation method to integrate seamlessly with other tools in your workflow.

Hit me up if you'd like to learn more!


Editor guide

I use the Yahoo! Finance WebSocket data streamer for realtime data.


Have you ever checked out IEX Cloud?

btw - I dig the master chief profile picture.


You can find the Master Chief sticker GIF on GIPHY!


And, I haven't checked the IEX cloud. So may you please elaborate?

Sure, it's basically an API with tools that enable developers to build financial apps – with ease. The platform gives access to financial data and services at low cost or no cost.

You can start for free here >> iexcloud.io/cloud-login#/register

You'll learn a lot more here >> iexcloud.io/support/

Hope that helps. :)

Yahoo! Finance Streamer is free!

Are you sure? Yahoo! Finance data is trusted by many investors worldwide.

And you won't find any documentation or anything like that for Yahoo! Finance Streamer WebSocket. You would literally have to inspect the webpage and go to the networks tab and see what its doing. I was successfully able to get the data I wanted.

I hear you. I found a great article by Greg Bland on this subject. I like his conclusions at the end. Check it out and let me know your thoughts.


Are you kidding me? I reversed engineer the protocol buffer file myself. I know how to use the WebSocket! I have been doing this for last 2.8 years. I even demonstrated how to consume the WebSocket Stream with JavaScript/TypeScript as it was only Python packages were available.