This selection of large subscription businesses in Chicago shows a diverse economic landscape. Health Care Service Corporation provides health coverage, Exelon is a utility company, and Morningstar offers investment insights. Other notable firms include Cision, a media intelligence provider, and Applied Systems, which develops cloud software for the insurance industry. These companies represent a mix of established enterprises and technology-focused firms.
A clear pattern among these companies is their strong presence in professional services and software development. Many are headquartered in Chicago, indicating a concentration of major corporate operations within the city. The list includes several non-profit professional associations, such as the American Bar Association and the American Marketing Association, alongside significant SaaS providers like Sprout Social, which offers social media management software.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Health Care Service Corporationhcsc.com
Provides health coverage for employers, individuals, and families, including Medicare and Medicaid plans, plus related health care products and services. |
21,090 | |||
| 2 |
Exelonexeloncorp.com
A leading utility company providing reliable and affordable energy to over 10 million customers in urban areas across multiple states, with a commitment to sustainability and community support |
20,291 | |||
| 3 |
Morningstarmorningstar.com
Independent investment insights, data, and research for various global markets including managed products, private capital, debt securities, and comprehensive asset management services. |
12,028 | |||
| 4 |
American Bar Associationamericanbar.org
largest voluntary association of lawyers and legal professionals in the world, focused on advancing the legal profession. |
4,327 | |||
| 5 |
Cisioncision.com
A global leader in media intelligence and communication solutions, equipping professionals with tools to excel in today's data-driven world |
3,839 | |||
| 6 |
Applied Systemswww1.appliedsystems.com
A leading provider of innovative cloud software for the insurance industry, driving transformation through digitization, automation, and new partnerships |
2,813 | |||
| 7 |
Home Chefhomechef.com
Innovative meal kit company fostering autonomy, creativity, and growth for employees Award-winning team focused on customer satisfaction and fun work environment |
2,766 | |||
| 8 |
American Marketing Associationama.org
Provides marketing and sales professionals with industry insights, professional certification, academic journals, training, and conferences through a global community. |
2,669 | |||
| 9 |
CCC Intelligent Solutionscccis.com
Cloud platform delivering AI-driven solutions connecting insurers, repairers, automakers, and suppliers for optimized insurance and claims experiences. |
2,417 | |||
| 10 |
Relativityrelativity.com
A software company offering RelativityOne, a SaaS product for data organization, truth discovery, and action during litigation and investigations in various sectors globally |
1,856 | |||
| 11 |
Sprout Social, Inc.sproutsocial.com
Global leader providing social media management, publishing, engagement, customer care, advocacy, and AI-powered business intelligence software to over thirty thousand brands worldwide. |
1,771 | |||
| 12 |
American College of Surgeonsfacs.org
Dedicated to improving surgical patient care worldwide with membership opportunities, quality programs, surgical registries, and education to enhance outcomes |
1,644 | |||
| 13 |
American Dental Associationada.org
Advocates for dentists, dental science, public oral health. Provides resources for professionals, researches, and champions public health initiatives. |
1,599 | |||
| 14 |
Literalitera.com
It specializes in legal technology, offering AI-driven solutions for document management, due diligence, and collaboration for legal teams globally. |
1,535 | |||
| 15 | 1,509 | ||||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Spherasphera.com
Sphera provides ESG performance and risk management software, data, and consulting services for EHS&S, operational risk, product stewardship, and SCRM |
1,448 | |||
| 17 |
Trading Technologiestradingtechnologies.com
Provider of SaaS trading platform connecting global exchanges, offering tools for execution, risk management, analytics, and post-trade services. |
1,428 | |||
| 18 |
iManageimanage.com
The company provides an intelligent, cloud-enabled knowledge work platform using AI to uncover and activate organizational content for informed decisions and collaboration |
1,276 | |||
| 19 |
PreSales Collectivepresalescollective.com
The company aims to elevate the role of PreSales globally by providing resources, knowledge, networking, and mentorship for career development in PreSales |
1,202 | |||
| 20 |
West Unified Communications Serviceswestuc.com
This company develops cloud-based technology for enterprise collaboration, offering solutions like conferencing, team collaboration, and cloud contact center services |
1,068 | |||
| 21 |
Daniels Healthdanielshealth.com
A global leader in healthcare innovation, providing safer solutions for medical waste management, with a focus on sustainability and staff safety |
1,064 | |||
| 22 |
Big Ten Networklinktr.ee
An internationally distributed network covering the Big Ten Conference, providing 24/7 coverage of over 2,300 events for fans and alumni nationwide |
1,060 | |||
| 23 |
SITEsiteglobal.com
Global organization supporting incentive travel industry, connecting travel to business results with professional development, certification, and business connections for members worldwide |
1,049 | |||
| 24 |
XSport Fitnessxsportfitness.com
A rapidly expanding fitness chain offering top-of-the-line equipment, personal training, educational programs, dietary supplements, and fitness apparel at various locations |
1,046 | |||
| 25 |
Origami Riskorigamirisk.com
Innovative provider of integrated risk, compliance, safety, healthcare, and P&C insurance SaaS solutions for various industries worldwide |
1,011 | |||
| 26 |
Modern Healthcaremodernhealthcare.com
Leading source of healthcare news, providing in-depth analysis and insights on industry events, trends, and research through various platforms for healthcare executives |
893 | |||
| 27 |
ActiveCampaignactivecampaign.com
Customer experience automation platform offering pre-built automations, CRM, email marketing, and integrations for personalized multi-channel customer engagement. |
840 | |||
| 28 |
Chicago Tribune Media Groupchicagotribune.com
Provides diverse media and marketing solutions reaching millions monthly through newspapers, digital platforms, and niche regional publications in Chicago area. |
825 | |||
| 29 |
project44project44.com
Transforms fragmented logistics management into unified intelligence, bringing certainty to global supply chain operations with intelligent transportation, end-to-end visibility, yard management and last mile solutions. |
809 | |||
| 30 |
Keeper Security, Inc.keepersecurity.com
Provides a unified, cloud-native cybersecurity platform protecting users, devices, and infrastructure from cyber attacks with zero-knowledge and zero-trust security. |
772 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
More company lists in Chicago
- The largest companies in Chicago 1,860
- Multinational companies in Chicago 366
- Financial services firms in Chicago 212
- Professional services firms in Chicago 196
- Financial Services companies in Chicago 185
- Education providers in Chicago 138
- SaaS companies in Chicago 132
- Consulting firms in Chicago 127
- IT Services and IT Consulting companies in Chicago 115
- IT services companies in Chicago 114
- Venture capital and private equity firms in Chicago 106
- AI companies in Chicago 100
- Hospitals and Health Care companies in Chicago 99
- Software Development companies in Chicago 97
- Manufacturers in Chicago 97
- Companies with in-house R&D in Chicago 93
- Healthcare providers in Chicago 86
- Retail chains in Chicago 84
- Companies with a mobile app in Chicago 75
- Critical infrastructure operators in Chicago 74
- Publicly traded companies in Chicago 71
- Real Estate companies in Chicago 67
- Non-profit Organizations companies in Chicago 66
- Corporate groups and holding companies in Chicago 64
The same list elsewhere in United States
- Subscription businesses in the United States 3,923
- Subscription businesses in California 940
- Subscription businesses in New York State 485
- Subscription businesses in Texas 310
- Subscription businesses in Florida 202
- Subscription businesses in Massachusetts 183
- Subscription businesses in Illinois 160
- Subscription businesses in Virginia 114
- Subscription businesses in Colorado 108
- Subscription businesses in Alabama 104
- Subscription businesses in Georgia 103
- Subscription businesses in Pennsylvania 90
- Subscription businesses in Utah 89
- Subscription businesses in Washington State 86
- Subscription businesses in New Jersey 85
- Subscription businesses in Arizona 74
- Subscription businesses in North Carolina 62
- Subscription businesses in New York 422
- Subscription businesses in San Francisco 323
- Subscription businesses in Austin 112
- Subscription businesses in Boston 87
- Subscription businesses in Atlanta 66
- Subscription businesses in Washington 63
- Subscription businesses in Los Angeles 60