We are passionate about building technology that moves industries forward

Our story began with building a fairer stock exchange – here’s what came next

IEX Story

Four men standing in a room looking serious
2009

IEX’s co-founders Brad Katsuyama, Ronan Ryan, Rob Park and John Schwall meet at Royal Bank of Canada (RBC), where they shared a vision for a more transparent system that better protected investors.

Photo of group gathered when IEX is founded.
2012

IEX is founded, and begins work on its Alternative Trading System (ATS) which debuts one year later.

Cover of the book Flash Boys by Michael Lewis
2014

IEX’s origin story is chronicled in Michael Lewis’s New York Times Best Seller “Flash Boys.”

Illustration of Signal's mathematical formula
2014

IEX creates the Signal, a mathematical formula that powers numerous IEX order types. The Signal is designed to identify moments when a stock’s price is unstable and protect clients from adverse selection.

Illustrated chart of D-Peg in action
2014

Building off the Signal, IEX debuts D-Peg, a signature patented order type designed to protect dark orders from unstable prices.

2016

The SEC approves IEX’s application as an exchange. IEX Exchange is born with support from some of the world’s largest financial institutions, including Capital Group, Franklin Templeton Investments, OppenheimerFunds, MassMutual Ventures, Brandes Investment Partners, Betterment, and Norges Bank.

D-Limit icon
2020

IEX launches its D-Limit (Discretionary-Limit) order type. Designed to improve displayed trading for market participants, D-Limit leverages the Signal and is the only exchange order type of its kind designed to protect orders from adverse selection.

2021

IEX creates swXtch.io, game-changing cloud software that enables previously blocked workloads to move to the cloud – with no code changes.

IEX Signal v6 icon
2023

A significant iteration on the Signal – known as “Signal v6” – introduces a new rules-based model to the formula, bringing a new level of performance for orders on IEX Exchange.

Team Standards

What's it like to work at IEX? Our culture is best described by our Team Standards.

01
Think Big, Do Good
Create meaningful change
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Think Big, Do Good
We measure success by impact on the industries we serve and the communities we touch.
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02
Be Gritty
We roll our sleeves up and get it done
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Be Gritty
Resilience and perseverance are in our DNA. We meet challenges head-on.
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03
Win Together
Share success, never lose alone
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Win Together
We celebrate our wins as one, learn from our mistakes together, and move together as a team.
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04
Invent & Reinvent
We thrive in the face of change
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Invent & Reinvent
A growth mindset is foundational to who we are. IEX is a place for creativity and continual learning.
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IEX Group, Inc. Leadership

Brad Katsuyama
Brad Katsuyama

Founder, Chief Executive Officer

Ronan Ryan
Ronan Ryan

Co-Founder, Chief Operating Officer

Rob Park
Rob Park

Co-Founder, Chief Technology Officer

Bryan Harkins
Bryan Harkins

President

Craig Resnick
Craig Resnick

Chief Financial Officer

Andrea Ledford
Andrea Ledford

Chief People Officer

Rachel Barnett
Rachel Barnett

Chief Legal Officer

Marija Zivanovic-Smith
Marija Zivanovic-Smith

Chief Marketing & Communications Officer

Florian Seifferer
Florian Seifferer

Chief Strategy Officer

Our IEX journey

We're building game-changing technology that shapes the future.

Matt Weinberg

/ Head of Business Development, IEX Exchange

"At IEX Exchange we're focused on building products that drive superior execution performance. Working here, you're challenged to find opportunities and think bigger every day."

Matt Weinberg
Stan Feldman

/ COO, IEX Exchange

“We are a high-performance U.S. stock exchange with some of the world’s most innovative design and product offerings. Providing best-in-class performance to our clients in a transparent way is integral to how we work.”

Stan Feldman
Florian Seifferer

/ Chief Strategy Officer, IEX Group

“Driven by our pioneering spirit and unyielding commitment to innovation, IEX is at the forefront of making markets fairer, and is in a unique position to truly shape the future of digital finance.”

Florian Seifferer
Brent Yates

/ CEO, swXtch.io

“Our cloud networking technology makes what was previously impossible, possible; with the potential to transform how entire industries operate. We are designing the future.”

Brent Yates
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