# Corporate groups and holding companies headquartered in Indiana

Tamtam tracks 54 corporate groups and holding companies headquartered in Indiana. This list ranks the 50 largest by number of employees on LinkedIn, led by Anthem, Inc., OPENLANE and MasterBrand, Inc.. Their median headcount is 869. Half of them were founded in 1967 or later. The most common headquarters are Indianapolis (18), Elkhart (5) and South Bend (3).

These are the largest corporate groups and holding companies in Indiana. The list includes a diverse mix of sectors, from manufacturing and financial services to healthcare and logistics. Notable companies include Elevance Health, formerly Anthem, Inc., a major player in hospitals and health care, and OPENLANE, which redefines the used car industry through digital marketplaces. Other significant firms are MasterBrand, Inc., offering cabinet solutions, and Republic Airways, a regional airline.

Indianapolis emerges as a central hub, hosting the headquarters of many of these large organizations, including OneAmerica Financial, Delta Faucet Company, and The Heritage Group. The companies on this list generally represent established, mid-sized to large enterprises, with founding dates spanning from the late 19th century to the early 2000s, indicating a history of sustained business activity in the state.

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

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Anthem, Inc.](https://www.tamtam.ai/c/anthem-inc) (elevancehealth.com)<br>A company formerly known as Anthem, Inc has rebranded as Elevance Health Follow them on their new LinkedIn page | Hospitals and Health Care | 🇺🇸 Indianapolis | 19,648 |  |
| 2 | [OPENLANE](https://www.tamtam.ai/c/openlane) (corporate.openlane.com)<br>Innovative team redefining the used car industry through digital marketplaces, making wholesale easy for OEMs, dealers, and financial institutions | Internet Marketplace Platforms | 🇺🇸 Carmel | 5,320 |  |
| 3 | [MasterBrand, Inc.](https://www.tamtam.ai/c/masterbrand-inc) (masterbrand.com)<br>This company helps people create comfortable homes through innovative cabinet solutions, fostering a culture of diversity, inclusion, and continuous improvement | Wholesale Building Materials | 🇺🇸 Jasper | 4,686 |  |
| 4 | [Republic Airways](https://www.tamtam.ai/c/republic-airways) (rjet.com)<br>A regional airline providing safe, reliable flights for major carriers with a fleet of Embraer jets and multiple bases across the US | Airlines and Aviation | 🇺🇸 Indianapolis | 4,334 | 1974 |
| 5 | [Alpha Chi Omega Fraternity, Inc.](https://www.tamtam.ai/c/alpha-chi-omega-fraternity-inc) (alphachiomega.org)<br>An organization for women promoting leadership, sisterhood, and philanthropy through various entities dedicated to empowering strong, impactful women | Non-profit Organizations | 🇺🇸 Indianapolis | 3,504 |  |
| 6 | [Forest River, Inc.®](https://www.tamtam.ai/c/forest-river-inc) (forestriverinc.com)<br>American manufacturer of recreational vehicles, cargo trailers, utility trailers, pontoon boats, and buses | Motor Vehicle Manufacturing | 🇺🇸 Elkhart | 3,342 |  |
| 7 | [OneAmerica Financial](https://www.tamtam.ai/c/oneamerica-financial) (oneamerica.com)<br>OneAmerica Financial is a national financial services provider with a people-first approach, offering solutions for long-term stability and growth | Financial Services | 🇺🇸 Indianapolis | 2,084 | 1877 |
| 8 | [Delta Faucet Company](https://www.tamtam.ai/c/delta-faucet-company) (deltafaucetcompany.com)<br>A leading manufacturer of residential and commercial faucets, focusing on innovation, collaboration, and employee development to create a positive culture | Manufacturing | 🇺🇸 Indianapolis | 1,961 |  |
| 9 | [Eight Eleven Group](https://www.tamtam.ai/c/eight-eleven-group) (eightelevengroup.com)<br>Eight Eleven Group provides IT, engineering, healthcare, and business support services nationwide, focusing on creating great experiences for clients, consultants, and employees | Staffing and Recruiting | 🇺🇸 Indianapolis | 1,877 | 2000 |
| 10 | [F.C. Tucker Company](https://www.tamtam.ai/c/f-c-tucker-company) (talktotucker.com)<br>Largest independent real estate firm in Indiana with $32 billion in sales, offering a full range of real estate services and a long-standing history of success | Real Estate | 🇺🇸 Indianapolis | 1,774 | 1918 |
| 11 | [The Heritage Group](https://www.tamtam.ai/c/the-heritage-group) (thgrp.com)<br>A family-owned company with diverse businesses in construction, materials, environmental services, and chemicals, focusing on innovation, research, and sustainability | Holding Companies | 🇺🇸 Indianapolis | 1,422 | 1930 |
| 12 | [Calumet](https://www.tamtam.ai/c/calumet) (calumet.com)<br>Manufacturing specialty ingredients for everyday products like lipstick, crayons, and jet fuel with a focus on agility and customer needs. | Oil and Gas | 🇺🇸 Indianapolis | 1,265 | 1916 |
| 13 | [Peoplelink Group](https://www.tamtam.ai/c/peoplelink-group) (peoplelinkgroup.com)<br>A staffing group based in South Bend, IN, providing contract staff to companies nationwide Mission to link business and people, with customer-centric values | Staffing and Recruiting | 🇺🇸 South Bend | 1,205 | 1987 |
| 14 | [Steel Warehouse](https://www.tamtam.ai/c/steel-warehouse) (steelwarehouse.com)<br>This company specializes in steel processing, utilizing powerful machinery and experienced engineers to provide customers with high-quality and cost-effective materials | Primary Metal Manufacturing | 🇺🇸 South Bend | 1,177 | 1947 |
| 15 | [Koch Enterprises](https://www.tamtam.ai/c/koch-enterprises) (kochenterprises.com)<br>A family-owned conglomerate with seven subsidiary businesses operating in manufacturing, distribution, construction, and IT sectors, focusing on team member development and community involvement | Motor Vehicle Manufacturing | 🇺🇸 Evansville | 1,136 | 1873 |
| 16 | [Patrick Industries, Inc.](https://www.tamtam.ai/c/patrick-industries-inc) (patrickind.com)<br>A leading component solutions provider for RV, Marine, Powersports, and Housing markets, empowering manufacturers and outdoor enthusiasts with quality products and innovation | Wholesale Building Materials | 🇺🇸 Elkhart | 1,114 | 1959 |
| 17 | [MacAllister Machinery Co., Inc.](https://www.tamtam.ai/c/macallister-machinery-co-inc) (macallister.com)<br>Leading dealership in Indiana and Michigan, offering new, used, and rebuilt equipment from Caterpillar and other manufacturers, with a focus on customer and employee satisfaction | Machinery Manufacturing | 🇺🇸 Indianapolis | 1,107 | 1945 |
| 18 | [AM General LLC](https://www.tamtam.ai/c/am-general-llc) (amgeneral.com)<br>Specialized vehicle design, engineering, manufacturing, and support for commercial and military clients Also produces diesel engines and automatic transmissions Strong focus on workforce diversity and equal opportunity | Defense and Space Manufacturing | 🇺🇸 South Bend | 1,104 | 1971 |
| 19 | [Community Healthcare System](https://www.tamtam.ai/c/community-healthcare-system) (comhs.org)<br>A not-for-profit organization in Northwest Indiana focuses on enhancing health and quality of life through hospitals, community projects, and charitable endeavors | Hospitals and Health Care | 🇺🇸 Munster | 1,038 |  |
| 20 | [Group 1001](https://www.tamtam.ai/c/group-1001) (group1001.com)<br>A collective empowering companies with insurance, annuities, online investing, technology, innovation, and strategic partnerships to drive positive growth and success | Insurance | 🇺🇸 Zionsville | 1,036 | 2013 |
| 21 | [Shambaugh & Son, L.P.](https://www.tamtam.ai/c/shambaugh-and-son-l-p) (shambaugh.com)<br>An industry-leading specialty contractor offering design/build services for construction projects, spanning mechanical, electrical, and process systems with high quality workmanship | Construction | 🇺🇸 Fort Wayne | 998 |  |
| 22 | [IMMI](https://www.tamtam.ai/c/immi) (imminet.com)<br>A global leader in designing and manufacturing advanced safety systems for various sectors, dedicated to bringing safety innovations worldwide | Motor Vehicle Manufacturing | 🇺🇸 Westfield | 994 | 1961 |
| 23 | [KSM (Katz, Sapper & Miller)](https://www.tamtam.ai/c/ksm-katz-sapper-and-miller) (ksmcpa.com)<br>A nationally recognized firm offering advisory, tax, and audit services, leveraging technology and diverse perspectives to help clients thrive and innovate | Accounting | 🇺🇸 Indianapolis | 915 | 1942 |
| 24 | [OFS](https://www.tamtam.ai/c/ofs-huntingburg) (ofs.com)<br>Global leader in socially responsible furniture and logistics solutions, committed to sustainability, craftsmanship, and customer satisfaction through empathy, teamwork, and stewardship | Furniture and Home Furnishings Manufacturing | 🇺🇸 Huntingburg | 876 | 1937 |
| 25 | [AgReliant Genetics, LLC](https://www.tamtam.ai/c/agreliant-genetics-llc) (gdmseeds.com)<br>A leading seed company based in Westfield, Indiana, offering unique genetics and high-performing hybrids through its brands AgriGold, LG Seeds, and PRIDE Seeds Committed to workforce health and community well-being | Biotechnology Research | 🇺🇸 Westfield | 869 |  |
| 26 | [Pacers Sports & Entertainment](https://www.tamtam.ai/c/pacers-sports-and-entertainment) (nba.com)<br>Pacers Sports & Entertainment delivers quality entertainment and unparalleled service through the Indiana Pacers, Indiana Fever, Pacers Gaming, and more | Spectator Sports | 🇺🇸 Indianapolis | 835 | 1967 |
| 27 | [Red Gold](https://www.tamtam.ai/c/red-gold) (redgoldtomatoes.com)<br>Family-owned company producing premium canned tomatoes, sauces, and juices through sustainable partnerships with regional farms and multiple distribution channels. | Food and Beverage Manufacturing | 🇺🇸 Elwood | 835 | 1942 |
| 28 | [Schurz Communications](https://www.tamtam.ai/c/schurz-communications) (schurz.com)<br>A technology company focused on information sharing and global connections, with a mission to seek and share truth for positive impact | Technology, Information and Internet | 🇺🇸 Mishawaka | 833 | 1872 |
| 29 | [Tippmann Group / Interstate Warehousing / Tippmann Construction](https://www.tamtam.ai/c/tippmann-group-interstate-warehousing-tippmann-construction) (tippmanngroup.com)<br>Specializing in cold storage construction and management, the company offers innovative freezing solutions and operates multiple state-of-the-art distribution facilities across the US | Warehousing and Storage | 🇺🇸 Fort Wayne | 746 | 1968 |
| 30 | [Celadon Group Inc.](https://www.tamtam.ai/c/celadon-group-inc) (celadontrucking.com)<br>A leading transportation and logistics company offering a wide range of services across North America with a focus on reliability and employee care | Truck Transportation | 🇺🇸 Indianapolis | 704 | 1985 |
| 31 | [Welch Packaging](https://www.tamtam.ai/c/welch-packaging) (welchpkg.com)<br>A family-owned network of custom corrugated manufacturers serving the Midwest, specializing in industrial and retail packaging, assembly, and fulfillment services | Packaging and Containers Manufacturing | 🇺🇸 Elkhart | 690 | 1985 |
| 32 | [Indianapolis Motor Speedway](https://www.tamtam.ai/c/indianapolis-motor-speedway) (workforcenow.adp.com)<br>A subsidiary of Penske Corporation, specializing in owning and managing major sporting events such as the Indianapolis 500 and the NTT INDYCAR SERIES Promotes diversity and inclusion | Spectator Sports | 🇺🇸 Indianapolis | 553 | 1909 |
| 33 | [Nix Companies, Inc.](https://www.tamtam.ai/c/nix-companies-inc) (nixcompanies.com)<br>A family holding company specializing in service-oriented businesses, real estate, and support services, including metal fabrication, machining, coatings, and finishings for industries | Construction | 🇺🇸 Poseyville | 548 | 1902 |
| 34 | [Industrial Physics](https://www.tamtam.ai/c/industrial-physics) (industrialphysics.com)<br>Industrial Physics provides world-class tests and inspections for manufacturers, ensuring the integrity of packaging, products, and materials across various industries globally | Machinery Manufacturing | 🇺🇸 New Albany | 538 |  |
| 35 | [BFS](https://www.tamtam.ai/c/bfs) (bfscompanies.com)<br>A fuel and convenience store chain operating in four states, dedicated to meeting community needs and building strong customer relationships | Food and Beverage Services | 🇺🇸 Morgantown | 471 |  |
| 36 | [Sterling Group](https://www.tamtam.ai/c/sterling-group) (thesterlinggrp.com)<br>Real estate investment firm specializing in multifamily housing and self-storage facilities Family-owned with development, construction, property management, and investment services | Real Estate | 🇺🇸 Mishawaka | 458 | 1976 |
| 37 | [Shiel Sexton](https://www.tamtam.ai/c/shiel-sexton) (shielsexton.com)<br>An employee-owned construction company focused on innovation, expertise, and customer experience, offering a range of services including interiors construction and facility maintenance | Construction | 🇺🇸 Indianapolis | 446 | 1962 |
| 38 | [ADQ](https://www.tamtam.ai/c/adq) (adq.ae)<br>Active sovereign investor focused on critical infrastructure, global supply chains, and growth of business platforms across diverse economic sectors. | Investment Management | 🇺🇸 Abu Dhabi | 431 | 2018 |
| 39 | [Executive Management Services, Inc.](https://www.tamtam.ai/c/executive-management-services-inc) (emsinc.com)<br>Privately owned facility services corporation with expertise in cleaning industry, offering high standards, cutting edge technology, and dedication to customer service | Facilities Services | 🇺🇸 Greenfield | 416 | 1989 |
| 40 | [LEER Group](https://www.tamtam.ai/c/leer-group) (leer.com)<br>North America's largest manufacturer of fiberglass and aluminum truck caps and tonneau covers, offering recreational and commercial products through various brands | Motor Vehicle Manufacturing | 🇺🇸 Elkhart | 403 |  |
| 41 | [OneAmerica Financial Partners, Inc.](https://www.tamtam.ai/c/oneamerica-financial-partners-inc) (oneamerica.com)<br>A US financial services organization offering individual and group life insurance, retirement plans, annuities, and employee benefits nationwide excluding New York | Financial Services | 🇺🇸 Indianapolis | 357 | 1877 |
| 42 | [The National Bank of Indianapolis](https://www.tamtam.ai/c/the-national-bank-of-indianapolis) (nbofi.com)<br>A locally-owned bank in Indianapolis offering banking services, wealth management, and superior customer service to professionals, businesses, and nonprofits | Banking | 🇺🇸 Indianapolis | 341 | 1993 |
| 43 | [Draper, Inc.](https://www.tamtam.ai/c/draper-inc) (draperinc.com)<br>This company manufactures projection screens, AV equipment, window shades, solar control solutions, gymnasium equipment, and custom AV solutions with a focus on sustainability | Architecture and Planning | 🇺🇸 Spiceland | 330 | 1902 |
| 44 | [Genesis Products](https://www.tamtam.ai/c/genesis-products) (linktr.ee)<br>Leading supplier of laminated panels and wood components for various industries including RV, Hospitality, Furniture, and more Manufacturer of interior doors and store fixtures | Wholesale Building Materials | 🇺🇸 Elkhart | 328 | 2002 |
| 45 | [Traylor Industrial Group](https://www.tamtam.ai/c/traylor-industrial-group) (traylorconstructiongroup.com)<br>Traylor Industrial Group offers diverse capabilities and expertise through collaboration and joint ventures to provide turnkey services and expand their geographic footprint | Construction | 🇺🇸 Evansville | 325 | 2020 |
| 46 | [DWA Healthcare Communications Group](https://www.tamtam.ai/c/dwa-healthcare-communications-group) (linktr.ee)<br>A leader in developing and distributing innovative medical education strategies for the pharmaceutical, diagnostic, and biotechnology industries, promoting scientific exchange among healthcare professionals | Advertising Services | 🇺🇸 Carmel | 324 | 1994 |
| 47 | [Infrastructure and Energy Alternatives, Inc. (IEA), a MasTec Company](https://www.tamtam.ai/c/infrastructure-and-energy-alternatives-inc-iea-a-mastec-company) (mastec.com)<br>A leader in energy and infrastructure construction, offering end-to-end services from design to construction with a focus on partnerships and client satisfaction | Construction | 🇺🇸 Indianapolis | 313 |  |
| 48 | [The Garrett Companies](https://www.tamtam.ai/c/the-garrett-companies) (thegarrettco.com)<br>A full-service multifamily development, construction, and management firm focused on nationwide projects with a mission of building value and providing superior returns | Real Estate | 🇺🇸 Greenwood | 312 | 2014 |
| 49 | [LINC Systems](https://www.tamtam.ai/c/linc-systems) (lincsystems.com)<br>A fastener distributor focused on providing exceptional customer service, employing experienced professionals, and emphasizing core values of loyalty, character development, and efficiency | Wholesale | 🇺🇸 Westfield | 304 | 1995 |
| 50 | [Gardens Alive](https://www.tamtam.ai/c/gardens-alive) (careers.gardensalive.com)<br>A leading distributor of home gardening solutions and environmentally responsible products, offering a variety of plant varieties, seeds, bulbs, and more | Consumer Goods | 🇺🇸 Lawrenceburg | 303 | 1984 |

## 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-indiana