# List of corporate groups and holding companies in New York State

Tamtam tracks 245 corporate groups and holding companies headquartered in New York State. This list ranks the 50 largest by number of employees on LinkedIn, led by Northwell Health, National Basketball Association (NBA) and WPP Media. Their median headcount is 6,095. The most common headquarters are New York (38).

These are large corporations with a significant presence in New York State, primarily headquartered in New York City. The companies span various sectors, including media, finance, and services. Examples include Northwell Health, the largest healthcare system in New York; the National Basketball Association (NBA), a global sports league; Moody's Corporation, a risk assessment firm; and Fox Corporation, a broadcast media producer.

A notable characteristic of this group is the concentration of media and advertising services companies, such as WPP Media, Fox Corporation, Stagwell, and Hearst Magazines, all based in New York City. This suggests a strong hub for creative and communication industries within the state.

🇺🇸 New York State · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Northwell Health](https://www.tamtam.ai/c/northwell-health) (northwell.edu)<br>Largest New York healthcare system with hospitals, outpatient facilities, research institutes, medical education, and extensive patient care services. | Hospitals and Health Care | 🇺🇸 Lake Success | 56,405 | 1997 |
| 2 | [National Basketball Association (NBA)](https://www.tamtam.ai/c/national-basketball-association-nba) (nba.com)<br>Global basketball leagues offering professional games, digital content, merchandise, social media engagement, and community programs promoting education and health. | Spectator Sports | 🇺🇸 New York | 29,069 |  |
| 3 | [WPP Media](https://www.tamtam.ai/c/wpp-media) (wppmedia.com)<br>Global media collective leveraging AI, platforms, people, and partners to create innovative solutions driving brand growth worldwide daily. | Advertising Services | 🇺🇸 New York | 28,457 |  |
| 4 | [PT PLN (Persero)](https://www.tamtam.ai/c/pt-pln-persero) (pln.co.id)<br>Sole provider of electricity in Indonesia, striving to improve service quality, with a long history and significant assets in the industry | Utilities | 🇺🇸 Jakarta Selatan | 26,545 | 1945 |
| 5 | [Paychex](https://www.tamtam.ai/c/paychex) (paychex.com)<br>Leading provider of HR, payroll, and benefits solutions for businesses in the US and Europe, serving over 740,000 clients and 22M worksite employees | Human Resources Services | 🇺🇸 Rochester | 18,530 | 1971 |
| 6 | [Moody's Corporation](https://www.tamtam.ai/c/moody-s-corporation) (moodys.com)<br>Global risk assessment firm providing data, analytics, and insights to empower organizations in making informed decisions and managing business risks worldwide | Financial Services | 🇺🇸 New York | 15,249 |  |
| 7 | [Delaware North](https://www.tamtam.ai/c/delaware-north) (delawarenorth.com)<br>Global leader providing hospitality services at sports venues, airports, parks, restaurants, hotels, and casinos, delivering high-quality guest experiences through enduring community partnerships. | Hospitality | 🇺🇸 Buffalo | 13,504 |  |
| 8 | [Marsh](https://www.tamtam.ai/c/marsh) (marsh.com)<br>provides risk management, strategy consulting, and people advisory services to clients worldwide across multiple specialized business units | Professional Services | 🇺🇸 New York | 12,940 |  |
| 9 | [Fox Corporation](https://www.tamtam.ai/c/fox-corporation) (foxcorporation.com)<br>Production and distribution of news, sports, and entertainment content through multiple leading media brands and platforms, including streaming services. | Broadcast Media Production and Distribution | 🇺🇸 New York | 12,051 |  |
| 10 | [Stagwell](https://www.tamtam.ai/c/stagwell) (stagwellglobal.com)<br>A challenger holding company specializing in transforming marketing strategies and practices | Advertising Services | 🇺🇸 New York | 10,825 |  |
| 11 | [Wonder](https://www.tamtam.ai/c/wonder) (wonder.com)<br>Providing quick delivery of diverse restaurant options to customers worldwide, ensuring convenient access to high-quality food | Food and Beverage Services | 🇺🇸 New York | 10,306 | 2018 |
| 12 | [Sony Music Entertainment](https://www.tamtam.ai/c/sony-music-entertainment) (sonymusic.com)<br>Global music company supporting artists, innovating in entertainment and technology, producing influential recordings, and expanding creative boundaries worldwide. | Musicians | 🇺🇸 New York | 10,202 |  |
| 13 | [Equinox](https://www.tamtam.ai/c/equinox) (equinox.com)<br>Collection of luxury fitness clubs, cycling studios, and hotels offering personal training, group classes, spa services, and apparel for high performance individuals. | Wellness and Fitness Services | 🇺🇸 New York | 9,944 | 1991 |
| 14 | [Hearst Magazines](https://www.tamtam.ai/c/hearst-magazines) (hearst.com)<br>Diversified media company with global reach, publishing 25 US brands and numerous print editions and websites worldwide, reaching millions of readers | Media Production | 🇺🇸 New York | 9,918 |  |
| 15 | [Etsy](https://www.tamtam.ai/c/etsy) (etsy.com)<br>Global marketplace connecting unique sellers with buyers worldwide, empowering entrepreneurs, creating jobs, and fostering creativity while keeping commerce human | Software Development | 🇺🇸 Brooklyn | 9,895 | 2005 |
| 16 | [Canon USA](https://www.tamtam.ai/c/canon-usa) (usa.canon.com)<br>A company uniting employees in contributing to humanity's prosperity and environmental protection through digital imaging solutions and commitment to the common good | Computers and Electronics Manufacturing | 🇺🇸 Melville | 9,585 |  |
| 17 | [Douglas Elliman Real Estate](https://www.tamtam.ai/c/douglas-elliman-real-estate) (elliman.com)<br>A leading residential brokerage company in the US, investing in property technology and providing real estate services in multiple states | Real Estate | 🇺🇸 New York | 9,575 | 1911 |
| 18 | [GroupM](https://www.tamtam.ai/c/groupm) (wppmedia.com)<br>A global media investment group shaping the future of advertising to be more effective, with expertise in data, entertainment, and investment solutions | Advertising Services | 🇺🇸 New York | 9,156 | 2003 |
| 19 | [Omnicom](https://www.tamtam.ai/c/omnicom-new-york) (omc.com)<br>Global marketing communications company offering integrated marketing services for 200+ brands worldwide, known for talent, creativity, and digital innovation | Advertising Services | 🇺🇸 New York | 8,062 |  |
| 20 | [Loews Corporation](https://www.tamtam.ai/c/loews-corporation) (loews.com)<br>Diversified company managing subsidiaries in insurance, pipelines, hotels, and packaging, providing strategic direction and corporate services to all. | Investment Management | 🇺🇸 New York | 8,020 |  |
| 21 | [Newmark](https://www.tamtam.ai/c/newmark) (nmrk.com)<br>Advisory and service provider for commercial real estate, serving institutional investors, corporations, owners, and occupiers worldwide with tailored solutions. | Real Estate | 🇺🇸 New York | 7,201 | 1929 |
| 22 | [Ziff Davis](https://www.tamtam.ai/c/ziff-davis) (ziffdavis.com)<br>Digital media and internet company with brands in technology, shopping, gaming, entertainment, health, connectivity, cybersecurity, and marketing technology. | Technology, Information and Media | 🇺🇸 New York | 6,688 |  |
| 23 | [STO Building Group](https://www.tamtam.ai/c/sto-building-group) (stobuildinggroup.com)<br>A family of top-tier builders who collaborate, innovate, and prioritize clients, offering a wide range of construction services with a focus on teamwork and empowerment | Construction | 🇺🇸 New York | 6,209 |  |
| 24 | [Warner Music Group](https://www.tamtam.ai/c/warner-music-group) (wmg.com)<br>A global entertainment company with a diverse portfolio including music labels, artists, songwriters, and a music publishing arm with extensive catalog | Entertainment Providers | 🇺🇸 New York | 6,102 |  |
| 25 | [Hearst](https://www.tamtam.ai/c/hearst) (hearst.com)<br>A diversified information, services, and media company with a global presence focused on informing audiences, improving lives, and leading with purpose and integrity | Media Production | 🇺🇸 New York | 6,095 | 1887 |
| 26 | [Viacom](https://www.tamtam.ai/c/viacom) (paramount.com)<br>Creation of global television, film, digital media, and live event experiences connecting diverse audiences through branded content and merchandise in many countries. | Entertainment Providers | 🇺🇸 New York | 6,047 |  |
| 27 | [Inizio](https://www.tamtam.ai/c/inizio) (inizio.com)<br>Providing tailored, innovative solutions for health and life sciences companies to optimize clinical development, commercialization, and maximize patient access. | Business Consulting and Services | 🇺🇸 New York | 5,706 |  |
| 28 | [Suntory Global Spirits](https://www.tamtam.ai/c/suntory-global-spirits) (suntoryglobalspirits.com)<br>Producer of premium whiskies, tequilas, gins, and ready-to-drink cocktails with global presence and strong sustainability commitments. | Beverage Manufacturing | 🇺🇸 New York | 5,577 |  |
| 29 | [Internova Travel Group](https://www.tamtam.ai/c/internova-travel-group) (internova.com)<br>A global travel services company with leading brands providing personalized expertise to leisure and corporate clients through a network of travel advisors worldwide | Hospitality | 🇺🇸 New York | 5,500 | 2008 |
| 30 | [AmTrust Financial Services, Inc.](https://www.tamtam.ai/c/amtrust-financial-services-inc) (amtrustfinancial.com)<br>Multinational insurance company specializing in workers’ compensation, small commercial, specialty risk, extended warranty, and middle-market property casualty insurance. | Insurance | 🇺🇸 New York | 4,973 | 1998 |
| 31 | [Diamond Baseball Holdings](https://www.tamtam.ai/c/diamond-baseball-holdings) (diamondbaseballholdings.com)<br>Founded in 2021, this company elevates fan experiences, creates dynamic brand engagements, and highlights the evolution of Minor League Baseball | Spectator Sports | 🇺🇸 New York | 4,419 |  |
| 32 | [1-800-FLOWERS.COM, INC.](https://www.tamtam.ai/c/1-800-flowers-com-inc) (1800flowersinc.com)<br>Leading gift and floral company offering diverse brands, loyalty programs, and digital experiences to inspire giving and build relationships. | Retail | 🇺🇸 Jericho | 4,391 | 1976 |
| 33 | [Moody's Ratings](https://www.tamtam.ai/c/moody-s-ratings) (moodys.com)<br>Provider of credit ratings, research, and risk analysis covering sovereign nations, corporate issuers, financial institutions, and structured finance globally. | Financial Services | 🇺🇸 New York | 4,388 |  |
| 34 | [HarperCollins Publishers](https://www.tamtam.ai/c/harpercollins-publishers) (harpercollins.com)<br>Global publisher producing thousands of annual titles across many languages and genres, managing extensive print and digital catalogs for award-winning international authors. | Book and Periodical Publishing | 🇺🇸 New York | 4,377 | 1817 |
| 35 | [FUJIFILM Americas](https://www.tamtam.ai/c/fujifilm-americas) (fujifilm.com)<br>A diverse group of affiliate companies focused on innovation in industries such as medical, electronics, chemicals, and photography to enhance global lives | Manufacturing | 🇺🇸 Valhalla | 4,327 | 1934 |
| 36 | [CUTCO Cutlery](https://www.tamtam.ai/c/cutco-cutlery) (cutco.com)<br>Cutco is a company dedicated to providing American-made kitchen solutions, including knives, with a lifetime guarantee and a focus on creating memories through food | Manufacturing | 🇺🇸 Olean | 3,597 | 1949 |
| 37 | [Atlas Air](https://www.tamtam.ai/c/atlas-air) (atlasairworldwide.com)<br>Leading provider of outsourced aircraft and aviation services, operating large fleets of Boeing freighter and passenger aircraft worldwide. | Airlines and Aviation | 🇺🇸 White Plains | 3,505 |  |
| 38 | [Fox News Media](https://www.tamtam.ai/c/fox-news-media) (foxnews.com)<br>Leading American news organization operating TV channels, digital platforms, audio services, and streaming services with a strong focus on cable news and business news | Broadcast Media Production and Distribution | 🇺🇸 New York | 3,365 |  |
| 39 | [Fareportal](https://www.tamtam.ai/c/fareportal) (fareportal.com)<br>Global travel technology company creating cutting-edge solutions for vacation seekers worldwide, with headquarters in NY and offices in multiple countries | Technology, Information and Internet | 🇺🇸 New York | 3,112 | 2002 |
| 40 | [United Health Services](https://www.tamtam.ai/c/united-health-services) (nyuhs.org)<br>A leading healthcare system in the Greater Binghamton region, providing comprehensive services to over 600,000 residents through hospitals, senior living, home care, and medical group | Hospitals and Health Care | 🇺🇸 Binghamton | 3,106 |  |
| 41 | [Discovery Inc](https://www.tamtam.ai/c/discovery-inc) (careers.wbd.com)<br>A media company focused on entertainment and information, evolving under the new name Warner Bros Discovery to bring more captivating content | Entertainment Providers | 🇺🇸 New York | 3,041 |  |
| 42 | [SANDOW](https://www.tamtam.ai/c/sandow) (sandow.com)<br>Innovative company in design, materials, and luxury industries transforming publishing with a diverse portfolio of design media and services brands | Design Services | 🇺🇸 New York | 2,978 |  |
| 43 | [Reimagined Parking](https://www.tamtam.ai/c/reimagined-parking) (reimaginedparking.com)<br>A leading parking solutions provider with a workforce of 8,000 managing 3,400 facilities across 500 cities, generating 34 million annual transactions | Facilities Services | 🇺🇸 New York | 2,957 |  |
| 44 | [SRC](https://www.tamtam.ai/c/src) (srcinc.com)<br>A not-for-profit R&D company tackling defense, environment, and intelligence challenges through innovative solutions, technology, and expertise since 1957 | Defense and Space Manufacturing | 🇺🇸 North Syracuse | 2,790 | 1957 |
| 45 | [Macmillan](https://www.tamtam.ai/c/macmillan) (us.macmillan.com)<br>A leading publishing company supporting authors, unlocking potential, and fostering diversity to connect audiences and make a lasting impact through storytelling | Book and Periodical Publishing | 🇺🇸 New York | 2,743 |  |
| 46 | [IAC](https://www.tamtam.ai/c/iac) (iac.com)<br>This company specializes in building, acquiring, and evolving new products and brands through curiosity, innovation, and financially-disciplined opportunism | Software Development | 🇺🇸 New York | 2,719 |  |
| 47 | [Centric Brands](https://www.tamtam.ai/c/centric-brands) (centricbrands.com)<br>Global collective designing, sourcing, and marketing apparel, accessories, beauty, and entertainment products for kids, men, and women through licensed and owned brands. | Retail Apparel and Fashion | 🇺🇸 New York | 2,621 |  |
| 48 | [Interpublic Group (IPG)](https://www.tamtam.ai/c/interpublic-group-ipg) (omc.com)<br>A values-based marketing solutions provider with globally recognized brands in advertising, communications, and data-driven creativity, generating over $10 billion in revenue | Advertising Services | 🇺🇸 New York | 2,620 |  |
| 49 | [R/GA](https://www.tamtam.ai/c/r-ga) (rga.com)<br>This company specializes in creating businesses and brands that are focused on promoting a more human-centered future through design | Advertising Services | 🇺🇸 New York | 2,393 |  |
| 50 | [BNY Investments](https://www.tamtam.ai/c/bny-investments) (bny.com)<br>Global asset management group offering specialized investment solutions and local expertise across various asset classes for diverse investors managing trillions in assets worldwide. | Investment Management | 🇺🇸 New York | 2,392 | 2001 |

## 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 12, 2026.

## More company lists in New York State

- [The largest companies in New York State](https://www.tamtam.ai/l/largest-companies-new-york-state) (12,432)
- [Multinational companies in New York State](https://www.tamtam.ai/l/multinational-companies-new-york-state) (2,216)
- [Financial services firms in New York State](https://www.tamtam.ai/l/financial-services-firms-new-york-state) (1,272)
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- [Real Estate companies in New York State](https://www.tamtam.ai/l/real-estate-companies-new-york-state) (789)
- [Venture capital and private equity firms in New York State](https://www.tamtam.ai/l/vc-and-private-equity-firms-new-york-state) (757)
- [Software Development companies in New York State](https://www.tamtam.ai/l/software-development-companies-new-york-state) (696)
- [Education providers in New York State](https://www.tamtam.ai/l/education-companies-new-york-state) (656)
- [AI companies in New York State](https://www.tamtam.ai/l/ai-companies-new-york-state) (585)
- [IT Services and IT Consulting companies in New York State](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-new-york-state) (570)
- [Retail chains in New York State](https://www.tamtam.ai/l/retail-chains-new-york-state) (559)
- [Healthcare providers in New York State](https://www.tamtam.ai/l/healthcare-providers-new-york-state) (494)
- [Companies with a mobile app in New York State](https://www.tamtam.ai/l/companies-with-mobile-app-new-york-state) (491)
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- [Advertising Services companies in New York State](https://www.tamtam.ai/l/advertising-services-companies-new-york-state) (473)
- [IT services companies in New York State](https://www.tamtam.ai/l/it-services-companies-new-york-state) (468)
- [Investment Management companies in New York State](https://www.tamtam.ai/l/investment-management-companies-new-york-state) (457)
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- [Hospitals and Health Care companies in New York State](https://www.tamtam.ai/l/hospitals-and-health-care-companies-new-york-state) (408)
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## The same list elsewhere in United States

- [Corporate groups and holding companies in the United States](https://www.tamtam.ai/l/holding-companies-united-states) (2,829)
- [Corporate groups and holding companies in California](https://www.tamtam.ai/l/holding-companies-california) (270)
- [Corporate groups and holding companies in Texas](https://www.tamtam.ai/l/holding-companies-texas) (238)
- [Corporate groups and holding companies in Florida](https://www.tamtam.ai/l/holding-companies-florida) (182)
- [Corporate groups and holding companies in Illinois](https://www.tamtam.ai/l/holding-companies-illinois) (154)
- [Corporate groups and holding companies in Pennsylvania](https://www.tamtam.ai/l/holding-companies-pennsylvania) (120)
- [Corporate groups and holding companies in Ohio](https://www.tamtam.ai/l/holding-companies-ohio) (104)
- [Corporate groups and holding companies in Georgia](https://www.tamtam.ai/l/holding-companies-georgia) (90)
- [Corporate groups and holding companies in Michigan](https://www.tamtam.ai/l/holding-companies-michigan) (90)
- [Corporate groups and holding companies in Alabama](https://www.tamtam.ai/l/holding-companies-alabama) (89)
- [Corporate groups and holding companies in Massachusetts](https://www.tamtam.ai/l/holding-companies-massachusetts) (87)
- [Corporate groups and holding companies in New Jersey](https://www.tamtam.ai/l/holding-companies-new-jersey) (79)
- [Corporate groups and holding companies in Virginia](https://www.tamtam.ai/l/holding-companies-virginia) (78)
- [Corporate groups and holding companies in North Carolina](https://www.tamtam.ai/l/holding-companies-north-carolina) (70)
- [Corporate groups and holding companies in Tennessee](https://www.tamtam.ai/l/holding-companies-tennessee) (60)
- [Corporate groups and holding companies in Wisconsin](https://www.tamtam.ai/l/holding-companies-wisconsin) (60)
- [Corporate groups and holding companies in Missouri](https://www.tamtam.ai/l/holding-companies-missouri) (59)
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- [Corporate groups and holding companies in Colorado](https://www.tamtam.ai/l/holding-companies-colorado) (52)
- [Corporate groups and holding companies in New York](https://www.tamtam.ai/l/holding-companies-new-york) (152)
- [Corporate groups and holding companies in Houston](https://www.tamtam.ai/l/holding-companies-houston) (74)
- [Corporate groups and holding companies in Chicago](https://www.tamtam.ai/l/holding-companies-chicago) (64)
- [Corporate groups and holding companies in Atlanta](https://www.tamtam.ai/l/holding-companies-atlanta) (47)

## The same list elsewhere

- [Corporate groups and holding companies in the world](https://www.tamtam.ai/l/holding-companies-in-the-world) (12,864)
- [Corporate groups and holding companies in North America](https://www.tamtam.ai/l/holding-companies-in-north-america) (3,311)

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Source: https://www.tamtam.ai/l/holding-companies-new-york-state