The free IEX API is built on a proven, high-performance system, and drives the applications we use to run our Exchange.

Start using data in seconds with our simple and powerful API. No account required.

Performance

3.5 million

messages per second peak

262 TB

data transfered per month

Reliability

99.981%

web uptime

100%

database uptime

RegSCI compliant

Our system is regulated for the highest level of integrity, resiliancy, and security.

Google Cloud

The performance, scale, and reliability of Google's technology runs our API.

Data loss protection

We developed and patented multiple ways to ensure data integrity.

Database

1.1 trillion

database records (and growing)

600,000

queries per second peak

72 TB

database size (and growing)

300 GB

data added per day

Redis caching

180 K

average operations per second

10.51 B

operations per day

Active-Active

We use two active-active clusters with geographic availability to protect against regional failures.

Availability

Active-Active

Patented. We actively run multiple copies of every server to ensure high availability.

Redundant

We run in 5 datacenters with multiple DNS providers.

Auto-Scaling

We scale our servers on-demand based on custom metrics.