# List of corporate groups and holding companies in Wisconsin

Tamtam tracks 60 corporate groups and holding companies headquartered in Wisconsin. This list ranks the 50 largest by number of employees on LinkedIn, led by Quad, Regal Rexnord and Associated Bank. Their median headcount is 758. Half of them were founded in 1954 or later. The most common headquarters are Milwaukee (10), Madison (6) and Brookfield (4).

This list highlights some of Wisconsin's largest corporate groups and holding companies. Many are established mid-sized to large firms, with a notable presence in manufacturing and financial services. Quad, for example, is a global marketing experience company, while Regal Rexnord manufactures sustainable solutions for airflow and motion control. Associated Bank provides comprehensive financial products, and Spectrum Brands produces pet care, pest control, and home cleaning products. Marshfield Clinic Health System offers extensive healthcare services across the region.

A clear pattern among these companies is their diverse operational focus, ranging from heavy industrial manufacturing to specialized financial and healthcare services. Several companies, such as Briggs & Stratton and Alliance Laundry Systems, were founded in the early 20th century, indicating a long-standing industrial base in the state.

🇺🇸 Wisconsin · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Quad](https://www.tamtam.ai/c/quad) (quad.com)<br>Global marketing experience company streamlining marketing complexities with state-of-the-art technology and data-driven solutions for brands to make direct consumer connections | Advertising Services | 🇺🇸 Sussex | 10,261 | 1971 |
| 2 | [Regal Rexnord](https://www.tamtam.ai/c/regal-rexnord) (maintenance.regalrexnord.com)<br>Global manufacturer of sustainable solutions for airflow, motion control, power transmission, and power generation in commercial, industrial, and residential settings Headquarters in Milwaukee, Wisconsin | Electric Power Transmission, Control, and Distribution | 🇺🇸 Milwaukee | 5,921 | 1955 |
| 3 | [Associated Bank](https://www.tamtam.ai/c/associated-bank) (associatedbank.com)<br>Provides comprehensive financial products and services through over 200 locations across Wisconsin, Illinois, Minnesota, and loan offices in several other states. | Financial Services | 🇺🇸 Green Bay | 5,089 | 1861 |
| 4 | [Marshfield Clinic Health System](https://www.tamtam.ai/c/marshfield-clinic-health-system) (marshfieldclinic.org)<br>Providing comprehensive healthcare services, research, education, and community partnerships across rural Wisconsin and Michigan's Upper Peninsula. | Hospitals and Health Care | 🇺🇸 Marshfield | 5,019 | 1916 |
| 5 | [Spectrum Brands, Inc](https://www.tamtam.ai/c/spectrum-brands-inc) (spectrumbrands.com)<br>Leading producer of pet care, pest control, home cleaning, grooming products, and small household appliances trusted worldwide. | Manufacturing | 🇺🇸 Middleton | 4,505 |  |
| 6 | [TDS®](https://www.tamtam.ai/c/tds-madison) (tdsinc.com)<br>Provides broadband internet, TV, phone services, wireless infrastructure leasing, and marketing solutions to urban, suburban, and rural U.S. communities. | Telecommunications | 🇺🇸 Madison | 3,980 | 1969 |
| 7 | [Briggs & Stratton](https://www.tamtam.ai/c/briggs-and-stratton) (briggsandstratton.com)<br>Design, manufacture, and market engines, lithium-ion batteries, generators, energy storage, and outdoor power equipment globally under multiple brand names. | Manufacturing | 🇺🇸 Milwaukee | 3,691 | 1908 |
| 8 | [Mercury Marine](https://www.tamtam.ai/c/mercury-marine) (mercurymarine.com)<br>designs, manufactures, distributes marine engines, parts, and accessories for recreational, commercial, and government boating applications worldwide | Manufacturing | 🇺🇸 Fond du Lac | 2,887 | 1939 |
| 9 | [Rehlko](https://www.tamtam.ai/c/rehlko) (rehlko.com)<br>providing global energy resilience solutions with innovative power systems and engines, supporting industrial and residential energy needs worldwide | Manufacturing | 🇺🇸 Milwaukee | 2,710 |  |
| 10 | [TruStage](https://www.tamtam.ai/c/trustage) (trustage.com)<br>Financially strong insurance, investment, and technology provider dedicated to helping people make confident financial decisions at every stage of life | Financial Services | 🇺🇸 Madison | 2,538 | 1935 |
| 11 | [REV Group, Inc](https://www.tamtam.ai/c/rev-group-inc) (revgroup.com)<br>Specialty vehicle designer and manufacturer, offering customized solutions for fire & emergency, commercial, and recreational applications to a diverse customer base in the United States | Motor Vehicle Manufacturing | 🇺🇸 Brookfield | 2,380 | 2010 |
| 12 | [Alliance Laundry Systems LLC](https://www.tamtam.ai/c/alliance-laundry-systems-llc) (alliancelaundry.com)<br>Manufacture and supply high-quality laundry machines and services worldwide, supporting diverse customers with innovative, efficient, and sustainable solutions. | Machinery Manufacturing | 🇺🇸 Ripon | 2,059 | 1908 |
| 13 | [CUNA Mutual Group](https://www.tamtam.ai/c/cuna-mutual-group) (cunamutual.com)<br>Financially strong insurance, investment, and financial services company focused on creating a more equitable financial system through community engagement and products | Financial Services | 🇺🇸 Madison | 1,816 | 1934 |
| 14 | [SMC Ltd](https://www.tamtam.ai/c/smc-ltd) (smcltd.com)<br>Offers global contract manufacturing and molding services for medical devices, diagnostics, and pharmaceutical industries, including design, engineering, and assembly. | Medical Equipment Manufacturing | 🇺🇸 Somerset | 1,783 | 1988 |
| 15 | [Shorewest](https://www.tamtam.ai/c/shorewest) (shorewest.com)<br>Family-owned company in Wisconsin since 1946, dedicated to helping families buy and sell homes Top workplace with 25 sales offices statewide | Real Estate | 🇺🇸 Brookfield | 1,399 | 1946 |
| 16 | [Badger Meter](https://www.tamtam.ai/c/badger-meter) (badgermeter.com)<br>Global provider of smart water solutions, encompassing flow measurement, water quality, and pressure monitoring. Offers data and analytics to optimize operations and ensure sustainable water use. | Utilities | 🇺🇸 Milwaukee | 1,378 |  |
| 17 | [Safway Group](https://www.tamtam.ai/c/safway-group) (safwaygroup.com)<br>Industry-leading provider of high-performance multiservice solutions worldwide, specializing in access, scaffolding, insulation, fireproofing, and coatings for various industries | Construction | 🇺🇸 Waukesha | 1,339 | 1936 |
| 18 | [Johnson Financial Group](https://www.tamtam.ai/c/johnson-financial-group) (johnsonfinancialgroup.com)<br>Provides banking, wealth management, mortgage, leasing, and advisory services with strong community values and private family ownership. | Financial Services | 🇺🇸 Racine | 1,333 | 1970 |
| 19 | [U.S. Venture, Inc.](https://www.tamtam.ai/c/u-s-venture-inc) (usventure.com)<br>A leader in distributing energy products, lubricants, tires, and parts, focusing on sustainability and community support, driving business success | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Appleton | 1,160 | 1951 |
| 20 | [QPS Employment Group](https://www.tamtam.ai/c/qps-employment-group) (qpsemployment.com)<br>A staffing agency specializing in IT, accounting, finance, and HR positions for the manufacturing industry with a focus on customer service and employee satisfaction | Staffing and Recruiting | 🇺🇸 Brookfield | 1,123 | 1985 |
| 21 | [AriensCo](https://www.tamtam.ai/c/ariensco) (ariensco.com)<br>A leading manufacturer of outdoor power equipment since 1933, designing and assembling products with world-class Lean manufacturing standards for consumers and commercial sectors | Machinery Manufacturing | 🇺🇸 Brillion | 930 | 1933 |
| 22 | [Bemis Manufacturing Company](https://www.tamtam.ai/c/bemis-manufacturing-company) (bemismfg.com)<br>Manufacturing custom plastic products including toilet seats, healthcare components, and precision parts for consumer, commercial, medical, and industrial markets worldwide. | Plastics Manufacturing | 🇺🇸 Sheboygan Falls | 919 | 1901 |
| 23 | [Husco](https://www.tamtam.ai/c/husco) (husco.com)<br>Family-owned company with 75 years of experience designing hydraulic and electro-mechanical control systems for Automotive and Off-Highway equipment Globally recognized for innovation and employee excellence | Industrial Machinery Manufacturing | 🇺🇸 Waukesha | 896 | 1985 |
| 24 | [Hydrite](https://www.tamtam.ai/c/hydrite) (hydrite.com)<br>Innovative independent provider of chemicals and services, focused on food safety, water treatment, manufacturing efficiency, and crop health, with strong community engagement | Chemical Manufacturing | 🇺🇸 Brookfield | 813 | 1929 |
| 25 | [BW Papersystems](https://www.tamtam.ai/c/bw-papersystems) (bwpapersystems.com)<br>A global leader in paper processing industries, offering innovative technologies and products through a combination of 10 strong brands worldwide | Machinery Manufacturing | 🇺🇸 Phillips | 758 | 2014 |
| 26 | [Inpro](https://www.tamtam.ai/c/inpro) (inprocorp.com)<br>Manufacturing and servicing door and wall protection, washroom systems, expansion joints, window treatments, elevator interiors, and architectural signage worldwide. | Wholesale Building Materials | 🇺🇸 Muskego | 750 | 1979 |
| 27 | [Ellsworth Adhesives](https://www.tamtam.ai/c/ellsworth-adhesives) (ellsworth.com)<br>Global distributor of specialty chemicals and equipment, offering adhesives, sealants, coatings, tapes, soldering products, and dispensing equipment for industrial assembly processes | Chemical Manufacturing | 🇺🇸 Germantown | 739 | 1974 |
| 28 | [Fairbanks Morse Defense](https://www.tamtam.ai/c/fairbanks-morse-defense) (fairbanksmorsedefense.com)<br>FMD provides reliable power systems, parts, and aftermarket services to naval defense customers, extending asset life and maximizing efficiency | Machinery Manufacturing | 🇺🇸 Beloit | 695 | 1872 |
| 29 | [Midwest Communications, Inc.](https://www.tamtam.ai/c/midwest-communications-inc) (mwcradio.com)<br>Family-owned multimedia company operating 81 radio stations and 75 brands in various states, providing diverse content to audiences in the Midwest | Broadcast Media Production and Distribution | 🇺🇸 Wausau | 654 | 1958 |
| 30 | [ACS Group](https://www.tamtam.ai/c/acs-group) (acscorporate.com)<br>The ACS Group provides a wide range of auxiliary products for the plastics processing industry, offering comprehensive solutions and superior technical support | Machinery Manufacturing | 🇺🇸 New Berlin | 598 | 1916 |
| 31 | [County Materials Corporation](https://www.tamtam.ai/c/county-materials-corporation) (countymaterials.com)<br>A leading manufacturer of concrete construction and landscape products, providing trusted solutions for infrastructure, transportation, commercial, agricultural, municipal, and residential projects | Wholesale Building Materials | 🇺🇸 Marathon | 592 | 1946 |
| 32 | [Oneida Nation](https://www.tamtam.ai/c/oneida-nation) (oneida-nsn.gov)<br>The company focuses on providing services related to tribal government, health, environment protection, parks, tourism, gaming, hospitality, and golf | Government Administration | 🇺🇸 Oneida | 571 | 1822 |
| 33 | [M3 Insurance](https://www.tamtam.ai/c/m3-insurance) (m3ins.com)<br>A leading insurance broker and risk management firm in America, providing world-class resources for managing risk, purchasing insurance, and offering employee benefits | Insurance | 🇺🇸 Madison | 567 | 1968 |
| 34 | [Pieper Electric, Inc.](https://www.tamtam.ai/c/pieper-electric-inc) (pieperpower.com)<br>A leading electrical contractor with a focus on safety, quality, and community stewardship, offering a wide range of services and committed to ethical growth and development | Construction | 🇺🇸 New Berlin | 547 | 1947 |
| 35 | [Kaplan Professional](https://www.tamtam.ai/c/kaplan-professional) (kaplan.com)<br>A global leader in for-profit education and career advancement services, empowering individuals to reach their career goals through personalized solutions | Education Administration Programs | 🇺🇸 La Crosse | 500 |  |
| 36 | [Enerpac](https://www.tamtam.ai/c/enerpac) (enerpac.com)<br>A global provider of advanced industrial tools and services prioritizing safety, productivity, and customer experience with technically superior solutions | Machinery Manufacturing | 🇺🇸 Milwaukee | 492 | 1910 |
| 37 | [First Business Bank](https://www.tamtam.ai/c/first-business-bank) (firstbusiness.bank)<br>A company offering business banking, private wealth management, bank consulting services, and total rewards for employees, committed to supporting communities | Financial Services | 🇺🇸 Madison | 485 | 1990 |
| 38 | [The Mark Travel Corporation](https://www.tamtam.ai/c/the-mark-travel-corporation) (appleleisuregroup.com)<br>ALG is a leading North American travel and hospitality group offering vacation packages, luxury resorts, destination management services, loyalty programs, and technology solutions | Travel Arrangements | 🇺🇸 Milwaukee | 481 | 1974 |
| 39 | [Twin Disc](https://www.tamtam.ai/c/twin-disc) (twindisc.com)<br>With over a century of experience, this company engineers and manufactures power transmission products for a wide range of industries, managing and controlling horsepower for various applications | Machinery Manufacturing | 🇺🇸 Milwaukee | 454 | 1918 |
| 40 | [Charter Manufacturing](https://www.tamtam.ai/c/charter-manufacturing) (chartermfg.com)<br>A family-owned group of metals manufacturing businesses, founded in 1936, known for continuous improvement, entrepreneurial spirit, and employee success stories | Manufacturing | 🇺🇸 Mequon | 401 | 1936 |
| 41 | [Journal Broadcast Group (division of Journal Communications)](https://www.tamtam.ai/c/journal-broadcast-group-division-of-journal-communications) (journalcommunications.com)<br>A diversified media company with operations in television, radio, publishing, and digital media, owning multiple stations and publications in various states | Broadcast Media Production and Distribution | 🇺🇸 Milwaukee | 400 | 1882 |
| 42 | [Amla Commerce (Creator of Artifi and Znode)](https://www.tamtam.ai/c/amla-commerce-creator-of-artifi-and-znode) (amla.io)<br>Amla Commerce develops sustainable ecommerce platforms with advanced features for mid-market and enterprise-level companies in various industries | Software Development | 🇺🇸 Milwaukee | 375 | 2018 |
| 43 | [GO Riteway Transportation Group](https://www.tamtam.ai/c/go-riteway-transportation-group) (goriteway.com)<br>Transportation solutions provider offering a range of vehicles for various occasions and long-term partnerships with institutions, companies, schools, and airport services | Ground Passenger Transportation | 🇺🇸 Oak Creek | 365 | 1957 |
| 44 | [Dairy Farming](https://www.tamtam.ai/c/dairy-farming)<br>A dairy marketing cooperative owned by nearly 15,000 farmers, specializing in diversified dairy product manufacturing | Dairy Product Manufacturing | 🇺🇸 Janesville | 360 |  |
| 45 | [Wis-Pak, Inc.](https://www.tamtam.ai/c/wis-pak-inc) (wis-pak.com)<br>A cooperative in the soft drink industry, with 35 shareholders owning 65 Pepsi-Cola franchises across multiple states and expanding through acquisitions | Food and Beverage Services | 🇺🇸 Watertown | 346 | 1969 |
| 46 | [Bloom Companies, LLC](https://www.tamtam.ai/c/bloom-companies-llc) (bloomcos.com)<br>The company provides sustainable design and construction engineering solutions to government, municipal, industrial, and commercial clients with cost-effective design and superior service | Civil Engineering | 🇺🇸 Milwaukee | 333 | 1998 |
| 47 | [URUS Group](https://www.tamtam.ai/c/urus-group) (urus.org)<br>A global agricultural holding company connecting leading organizations to provide cutting-edge genetics, reproductive services, dairy management, and products for sustainable herds | Farming | 🇺🇸 Madison | 313 | 2018 |
| 48 | [OESC (Oneida ESC Group)](https://www.tamtam.ai/c/oesc-oneida-esc-group) (oescgroup.com)<br>A family of companies delivering engineering, science, and construction services worldwide, maximizing customer-focused project delivery through synergy and diverse resources | Facilities Services | 🇺🇸 Milwaukee | 312 | 2016 |
| 49 | [Steele Solutions, Inc](https://www.tamtam.ai/c/steele-solutions-inc) (steelesolutions.com)<br>A leader in North America for designing and manufacturing work platforms, custom chutes, and security lockers for warehouse automation projects | Manufacturing | 🇺🇸 South Milwaukee | 278 | 1996 |
| 50 | [Volm Companies Inc.](https://www.tamtam.ai/c/volm-companies-inc) (volmcompanies.com)<br>A leading supplier of packaging equipment and materials for the fresh produce industry, offering customized solutions and personalized customer service | Packaging and Containers Manufacturing | 🇺🇸 Antigo | 272 | 1954 |

## 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.

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Source: https://www.tamtam.ai/l/holding-companies-wisconsin