Insights

Established Market Presence As the oldest and largest independent futures brokerage in the U.S., R.J. O'Brien has extensive relationships with high-profile clients and a longstanding reputation, presenting opportunities to offer advanced trading technology and compliance solutions to enhance their operational efficiency.

Growth via Acquisition The recent acquisition by StoneX Group for approximately $900 million indicates a significant expansion phase, creating openings for integration services, after-market analytics solutions, and strategic consulting to support seamless transition and future scalability.

Technological Modernization With a sophisticated tech stack that includes platforms like Kendo UI, Bootstrap, and Windows Server, there is a strong potential to upsell innovative fintech solutions, cybersecurity enhancements, and data management tools to support their global order entry and clearing operations.

Global Expansion Strategy Recent leadership promotions and new website launches across EMEA suggest a focus on international market growth, offering opportunities to engage with regional compliance, localized trading platforms, and cross-border financial services tailored to their expanding global footprint.

Industry Leadership & Loyalty As a family-owned firm with deep industry roots and a focus on client-focused services rather than proprietary trading, R.J. O'Brien values trusted partnerships, making it an ideal candidate for customized service offerings in compliance consulting, risk management, and client relationship management solutions.

R.J. O'Brien Tech Stack

R.J. O'Brien uses 8 technology products and services including oEmbed, Font Awesome, Windows Server, and more. Explore R.J. O'Brien's tech stack below.

  • oEmbed
    Dev Tools
  • Font Awesome
    Font Scripts
  • Windows Server
    Operating Systems
  • X-XSS-Protection
    Security
  • Kendo UI
    UI Frameworks
  • Bootstrap
    UI Frameworks
  • Yii
    Web Frameworks
  • Microsoft IIS
    Web Servers

Media & News

R.J. O'Brien's Email Address Formats

R.J. O'Brien uses at least 1 format(s):
R.J. O'Brien Email FormatsExamplePercentage
FLast@rjobrien.comJDoe@rjobrien.com
95%
FirstL@rjobrien.comJohnD@rjobrien.com
3%
FirstLast@rjobrien.comJohnDoe@rjobrien.com
1%
First@rjobrien.comJohn@rjobrien.com
1%

Frequently Asked Questions

Where is R.J. O'Brien's headquarters located?

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R.J. O'Brien's main headquarters is located at 222 South Riverside Plaza Suite 1200 Chicago, Illinois 60606 United States. The company has employees across 3 continents, including North AmericaEuropeAsia.

What is R.J. O'Brien's phone number?

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You can contact R.J. O'Brien's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is R.J. O'Brien's official website and social media links?

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R.J. O'Brien's official website is rjobrien.com and has social profiles on LinkedInCrunchbase.

What is R.J. O'Brien's SIC code NAICS code?

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R.J. O'Brien's SIC code is 6211 - Security Brokers, Dealers, and Flotation Companies NAICS code is 52 - Finance and Insurance.

How many employees does R.J. O'Brien have currently?

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As of May 2026, R.J. O'Brien has approximately 507 employees across 3 continents, including North AmericaEuropeAsia. Key team members include Chief Operating Officer Emea At R. J. O'brien: G. L.Chief Operating Officer, London: N. R.Vice President Fixed Income Group: C. M.. Explore R.J. O'Brien's employee directory with LeadIQ.

What industry does R.J. O'Brien belong to?

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R.J. O'Brien operates in the Financial Services industry.

What technology does R.J. O'Brien use?

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R.J. O'Brien's tech stack includes oEmbedFont AwesomeWindows ServerX-XSS-ProtectionKendo UIBootstrapYiiMicrosoft IIS.

What is R.J. O'Brien's email format?

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R.J. O'Brien's email format typically follows the pattern of FLast@rjobrien.com. Find more R.J. O'Brien email formats with LeadIQ.

When was R.J. O'Brien founded?

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R.J. O'Brien was founded in 1914.

R.J. O'Brien

Financial ServicesIllinois, United States501-1000 Employees

R.J. O'Brien & Associates LLC is the oldest and largest independent futures brokerage and clearing firm in the United States. 

A futures commission merchant (FCM), RJO is a full clearing member of: the CME Group (founding member of the Chicago Mercantile Exchange) and all its markets; IntercontinentalExchange (ICE); NYSE Liffe U.S.; and the CBOE Futures Exchange (CFE). RJO offers the latest in order entry technology coupled with 24-hour execution and clearing on every futures exchange worldwide. Clearing more than 100,000 client accounts, the firm provides a full range of services to the industry’s largest global network of introducing brokers (IBs) and to commercial, institutional, international and individuals clients. These include more than 400 IBs and many of the world's largest financial, industrial and agricultural institutions. We do not engage in proprietary trading; all of our business focuses on our valued clients.

Founded in 1914, RJO is one of the last 'boutique' futures firms in the industry. It is a privately held business majority owned by the O'Brien family of Chicago. The O'Briens have been instrumental in the development of the futures industry and remain committed to the continued growth of the company and our leadership within the industry.

Futures trading involves the substantial risk of loss and is not suitable for all investors. Past performance is not indicative of future results.

Section iconCompany Overview

Headquarters
222 South Riverside Plaza Suite 1200 Chicago, Illinois 60606 United States
Phone number
SIC Code
6211 - Security Brokers, Dealers, and Flotation Companies
NAICS Code
52 - Finance and Insurance
Founded
1914
Employees
501-1000

Section iconFunding & Financials

  • $500M$1B

    R.J. O'Brien's revenue is estimated to be in the range of $500M$1B

Section iconFunding & Financials

  • $500M$1B

    R.J. O'Brien's revenue is estimated to be in the range of $500M$1B

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