Top Illinois Financial Services Companies (424)

Block, Inc. is a global technology company with a focus on financial services. Made up of Square, Cash App, Afterpay, TIDAL, Bitkey, and Proto, Block, Inc. builds technology to increase access to the global economy. Each of our brands unlocks different aspects of the economy for more people. Square makes commerce and financial services accessible to sellers. Cash App is the...

Alliant is unlike any other financial institution — a digital credit union that wows our members. We’re boldly disrupting banking norms to do good for our members, employees and communities. With 90 years of history and more than $19 billion in assets, Alliant Credit Union is the largest credit union in Illinois and one of the largest in the U.S. Our industry-leading...

As the foundation for secure markets, OCC is a customer-driven organization that delivers world-class Risk Management, Clearing, and Settlement Services for a sophisticated mix of financial products that includes standard options, stock loans, and futures contracts.

IG North America is home to tastytrade, tastylive, tastyfx, and tastycrypto—a family of brands built to democratize trading and empower individual investors. Founded in Chicago by the creators of thinkorswim, acquired by London-based IG Group in 2021, we combine startup innovation with the backing of a global fintech leader with 50+ years of experience. From our headquarters in Chicago's Fulton...

Adyen (ADYEN:AMS) is the financial technology platform of choice for leading companies. By providing end-to-end payments capabilities, data-driven insights, and financial products in a single global solution, Adyen helps businesses achieve their ambitions faster. With offices around the world, Adyen works with the likes of Meta, Uber, H&M, eBay, and Microsoft.

Capco, a Wipro company, is a global management and technology consultancy specializing in driving transformation in the energy and financial services industries. Capco operates at the intersection of business and technology by combining innovative thinking with unrivalled industry knowledge to fast-track digital initiatives for banking and payments, capital markets, wealth and asset management, insurance, and the energy sector. Capco’s cutting...

TransUnion is a global information and insights company that makes trust possible by ensuring that each consumer is reliably and safely represented in the marketplace. We do this by having an accurate and comprehensive picture of each person. This picture is grounded in our legacy as a credit reporting agency which enables us to tap into both credit and public record...

MarketAxess is on a journey to digitally transform one of the world's largest financial markets, enabling the shift from analog, phone-based trading to a fully electronic marketplace. Why does this matter? Because our platform makes trading fixed-income more accessible, ultimately improving transparency, efficiency and competition in the marketplace. Changing the way an established industry transacts is no easy feat. There...

Geneva Trading LLC is a leading proprietary trading firm with a history of consistent success in the listed derivatives markets. Over the past 20 years, we’ve grown significant capital, developed proven technology, and maintained an appetite for diversified trading strategies. We foster innovation and look for people who can solve complex problems that drive immediate results. We've built a culture of...

CWAN was founded on a simple belief: investment professionals deserve modern technology that actually works for them. Not legacy systems that slow them down. Not fragmented data that creates confusion. But one comprehensive platform that gives you complete visibility and crystal-clear insights. The result? Investment management that works as seamlessly as your investment strategy. Since our founding in 2004, CWAN has been...

Apex Fintech Solutions provides the tools and services that enable hundreds of clients to launch, scale, and support digital investing for tens of millions of end investors. The company provides essential infrastructure and a comprehensive ecosystem of cloud-based products to enable and streamline trading, wealth management, cost basis, tax reporting, and, through its subsidiary Apex Clearing™, custody and clearing. For...

Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market’s...

Our mission is to move financial lives forward. We utilize data and technology to connect everyday Americans to financial solutions, empowering our customers to achieve their financial goals and build financial health. We are a data-driven platform at the intersection of technology and credit*, built to meet the financial needs of millions of middle-income Americans. We use data and machine learning...

NinjaHoldings was founded in 2017 by a team seeking to revolutionize the way everyday Americans interact with financial services. Through our CreditNinja and NinjaCard brands, we empower people overlooked by traditional financial institutions to take control of their finances via a full suite of digital banking and lending products, providing incentives and rewards along the way as we guide them...

Halo Investing is an award-winning technology platform that disrupts how protective investment solutions are used worldwide. Headquartered in Chicago, with employees worldwide, we’re on a mission to change the world by democratizing access to investment solutions that were previously unavailable to most investors. Our marketplace connects financial advisors and investors to protective investment products – including structured notes and annuities...

Bloom Credit helps companies launch lending products, report consumers' payments, and create innovative credit experiences. We do this by providing our clients with the data they need from all three credit bureaus, the expertise they are looking for to launch seamlessly, and the proprietary analytics to supplement credit insights - all delivered through Bloom’s developer-friendly API. Over 12 million US consumers...

Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square. After enabling anyone to take payments and never miss a sale, we saw sellers stymied by disparate, outmoded products and tools that wouldn’t work together. So we expanded into software and started building integrated, omnichannel solutions – to help sellers sell online, manage...

Clear Street’s mission is to give every sophisticated investor access to every asset, in every market, through a unified platform built for speed, transparency and scale. We give our clients the technology, tools, and service once reserved for the largest institutions, rebuilt with modern infrastructure. Our single, cloud-native, end-to-end capital markets platform powers investor growth today and is transforming how they...

NinjaTrader's engineering, product, and operations teams build for nearly 4 million futures traders worldwide. Real users, real markets, real confidence in the tech behind every trade. We've been at this since 2003 — launching our own brokerage in 2014 and our FCM in 2021 — and we know what scale looks like in this category. In 2025, NinjaTrader joined Kraken and...

As the world’s largest asset manager, BlackRock partners with investors around the globe to help them (and those on whose behalf they invest) plan for life’s most important goals – like retirement, home ownership and their children’s education. Our clients range from governments, foundations and other large institutions to those investing on behalf of individuals, including firefighters, nurses, teachers and...