Gain a broader picture of the market from a different kind of exchange
Cost-effective market data feeds from a growing pool of liquidity
Access a growing piece of the market
IEX exchange market share in U.S. equities*
**IEX displayed volume as a percent of on-exchange volume at NBBO
Speed Bump
A 350-microsecond, symmetric latency on incoming orders and messages before arriving at the exchange's matching engine. The delay gives the exchange time to take in market data from other venues—which is not delayed—and update prices before executing trades.
IEX Equities Signal
The IEX Signal also known as the Crumbling Quote Indicator, or CQI, is a mathematical formula that powers some of IEX’s signature equities order types and determines if a current price is likely about to change.
Real-time and Historical Data Feeds
A suite of real-time data feeds across equities and options, delivered directly from IEX or through a third-party data provider.
Estimate your IEX market data cost
A monthly estimate for IEX market data (not including connectivity fees).
Get Connected
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Become a Vendor
IEX values the important role Market Data and Connectivity vendors play in capital markets bringing critical infrastructure, data, tools and analytics to the full spectrum of participants across the ecosystem of trading and data.
Interested in becoming a Market Data and Connectivity vendor with IEX? Learn more below about what IEX has to offer.
The External Distribution Rebate program rewards distributors who bring new clients to IEX Market Data by letting you share directly in our growth:
Program terms and eligibility are subject to the External Distribution Rebate Program agreement and related market data terms and conditions.
IEX Pricing
Visit the IEX fee schedules for a full description of pricing. Vendors distributing to qualified new clients can earn a 75% rebate on market data revenue.
IEX Options market data is available free of charge through December 31, 2026, and offered at 50% off January 2027 through March 2027.