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IEX Real-Time Stock Prices

Frequently Asked Questions

Below you will find the most frequently asked questions about this data feed. We have also curated some resources to help you get started, listed on the right. If you have any questions or issues, please visit our Help Center. if you have any questions.
What do the concurrent connection limit and the daily connection limit mean?
  • Concurrent Connection Limit refers to the number of securities you are able to stream at one time through the websocket. So, for example, the Individual plan allows you to stream a max of 10 tickers at the same time.
  • Each plan for the websocket is tiered by a concurrent connection limit and whether or not you need redistribution rights for the data.
Is there an unlimited option to allow me to stream as many securities as I want?
  • Yes, it's called the "firehose" option. This option allows you to connect to a "lobby" channel, instead of connecting to individual securities, which streams the live price and size of every bid, ask, and last sale for all securities trading on the IEX exchange. It's a massive amount of data.
  • For those interested in the unlimited "firehose" option, please see the appropriate product page, here.
What securities are covered?
  • The IEX exchange covers securities trading on all of the major US exchanges, with the actual pricing data strictly from the IEX.
  • We also offer a real time streaming Nasdaq Basic websocket, which also covers securities on all of the major US exchanges, with the actual pricing data strictly from the Nasdaq market. Here's an article we wrote discussing the differences between the Nasdaq and IEX and the cirumstances for when to use each: Real time Prices Article.
Do you have any resources to help get me started?
Isn't the IEX free? Why would I subscribe to your IEX solution?

We provide several competitive advantages in subscribing to our IEX feed over just pulling the data from the IEX site. These include the SDKs we've built for accessing the data, pulling the data into our security master database, API integration and distribution platform, and our online chat support.

Because we offer a paid, premium service, we also guarantee that our service will remain active. IEX offers a free service with no such guarantee or obligation, able to cut off your access at any time with rate limits to boot.

If you need help and support utilizing our developer tools, need to integrate other kinds of data using our API, and/or require a guaranteed service, then a subscription through us is the way to go.

However, if you're an individual, experienced developer that also does not need any other types of data, and are fine with the risks associated with using a free, unprotected service, you're better off going with IEX, since it's free.

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