# Companies with in-house R&D headquartered in New York State

Tamtam tracks 419 companies with in-house R&D headquartered in New York State. This list ranks the 100 largest by number of employees on LinkedIn, led by IBM, PepsiCo and Pfizer. Their median headcount is 7,423. Half of them were founded in 1968 or later. The most common headquarters are New York (58), Bronx (4) and Rochester (4).

These large New York State companies conduct in-house research and development. The list features major players across diverse sectors. IBM focuses on technology, infrastructure, software, and consulting, while PepsiCo is a global food and beverage innovator. Pfizer is a biopharmaceutical company developing therapies, and American Express is a globally integrated payments company. Goldman Sachs provides capital markets services and asset management, and Mastercard is a global technology company in payments.

A notable pattern is the strong presence of financial services firms, with several headquartered in New York City, including Goldman Sachs, American Express, BNY, and BlackRock. The list also shows a significant concentration of healthcare organizations like Northwell Health, Mount Sinai Health System, and NYU Langone Health, all contributing to medical research and patient care.

🇺🇸 New York State · 100 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [IBM](https://www.tamtam.ai/c/ibm) (ibm.com)<br>It focuses on collaboration among technologists, developers, and engineers to improve technology, infrastructure, software, and consulting for better solutions. | IT Services and IT Consulting | 🇺🇸 Armonk | 335,625 |  |
| 2 | [PepsiCo](https://www.tamtam.ai/c/pepsico) (pepsico.com)<br>A global company championing innovation, creating deep connections with iconic brands, and empowering employees to make a global impact for a better world | Food and Beverage Services | 🇺🇸 Purchase | 140,098 |  |
| 3 | [Pfizer](https://www.tamtam.ai/c/pfizer) (pfizer.com)<br>A leading biopharmaceutical company focused on research and innovation to develop therapies that improve and extend the lives of patients worldwide | Pharmaceutical Manufacturing | 🇺🇸 New York | 102,598 |  |
| 4 | [American Express](https://www.tamtam.ai/c/american-express) (americanexpress.com)<br>A globally integrated payments company supporting customers' financial confidence, promoting commerce, and providing experiences that enrich lives and drive business success | Financial Services | 🇺🇸 New York | 94,909 |  |
| 5 | [Goldman Sachs](https://www.tamtam.ai/c/goldman-sachs) (goldmansachs.com)<br>Global financial institution providing expert capital markets services, investment banking, and asset management for clients through partnership, integrity, and world-class operational excellence. | Financial Services | 🇺🇸 New York | 76,000 |  |
| 6 | [WNS](https://www.tamtam.ai/c/wns) (wns.com)<br>Global provider of digital-led business transformation, combining industry knowledge, technology, analytics, and process expertise to deliver innovative solutions. | Business Consulting and Services | 🇺🇸 New York | 61,367 | 1996 |
| 7 | [The Estée Lauder Companies Inc.](https://www.tamtam.ai/c/the-estee-lauder-companies-inc) (elcompanies.com)<br>A global leader in skincare, makeup, fragrance, and hair care, offering luxury brands sold in 150+ countries, with a diverse product portfolio | Personal Care Product Manufacturing | 🇺🇸 New York | 60,000 |  |
| 8 | [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 |
| 9 | [BNY](https://www.tamtam.ai/c/bny) (bny.com)<br>Global financial platforms provider managing investment assets and custody services for top banks, governments, pension plans, and major corporations to accelerate growth. | Financial Services | 🇺🇸 New York | 55,654 | 1784 |
| 10 | [Mastercard](https://www.tamtam.ai/c/mastercard) (mastercard.com)<br>Global technology company in payments industry connecting and powering inclusive digital economy through safe, simple, smart transactions benefiting individuals, institutions, and businesses worldwide | IT Services and IT Consulting | 🇺🇸 Purchase | 49,687 |  |
| 11 | [Compass](https://www.tamtam.ai/c/compass-new-york) (compass.com)<br>Real estate technology company with a platform supporting the buying and selling process, delivering exceptional experiences for agents and clients | Real Estate | 🇺🇸 New York | 35,116 | 2012 |
| 12 | [BlackRock](https://www.tamtam.ai/c/blackrock) (blackrock.com)<br>Global asset manager and technology provider helping people invest through diverse market access and expert financial insights across more than forty countries. | Financial Services | 🇺🇸 New York | 34,599 | 1988 |
| 13 | [Colgate-Palmolive](https://www.tamtam.ai/c/colgate-palmolive) (colgatepalmolive.com)<br>Develops, produces, distributes, and sells essential health & hygiene products and pet nutrition offerings, with a focus on sustainability and community wellbeing. | Manufacturing | 🇺🇸 New York | 30,816 |  |
| 14 | [Mount Sinai Health System](https://www.tamtam.ai/c/mount-sinai-health-system) (mountsinai.org)<br>Provides distinguished care, conducts transformative research, and advances biomedical education through hospitals, a medical school, and extensive ambulatory network. | Hospitals and Health Care | 🇺🇸 New York | 30,202 | 2013 |
| 15 | [NYU Langone Health](https://www.tamtam.ai/c/nyu-langone-health) (jobs.nyulangone.org)<br>World-class academic medical center with top-ranked patient care, education, and research programs, serving diverse communities with excellence and inclusive values | Hospitals and Health Care | 🇺🇸 New York | 29,840 |  |
| 16 | [Nielsen](https://www.tamtam.ai/c/nielsen) (nielsen.com)<br>Global leader in audience insights, data, and analytics shaping media and content by understanding behaviors across all platforms, empowering clients with actionable intelligence | Software Development | 🇺🇸 New York | 29,147 |  |
| 17 | [Bloomberg](https://www.tamtam.ai/c/bloomberg) (bloomberg.com)<br>Global provider of real-time financial data, market information, and news, leveraging technology and analysis to support financial decision-making worldwide. | Financial Services | 🇺🇸 New York | 26,832 | 1981 |
| 18 | [Columbia University](https://www.tamtam.ai/c/columbia-university) (columbia.edu)<br>A renowned leader in higher education, Columbia attracts top minds to drive academic inquiry, make groundbreaking discoveries, and serve society globally | Higher Education | 🇺🇸 New York | 23,565 | 1754 |
| 19 | [Corning Incorporated](https://www.tamtam.ai/c/corning-incorporated) (corning.com)<br>Development of advanced glass, ceramics, and optical products for communications, electronics, automotive, life sciences, and display technologies. | Glass, Ceramics and Concrete Manufacturing | 🇺🇸 Corning | 22,260 |  |
| 20 | [Infor](https://www.tamtam.ai/c/infor) (infor.com)<br>A global leader in business cloud software, Infor specializes in developing industry-specific solutions for various sectors, offering mission-critical enterprise applications across the world | Software Development | 🇺🇸 New York | 22,222 | 2002 |
| 21 | [PVH Corp.](https://www.tamtam.ai/c/pvh-corp) (pvh.com)<br>Focused on transforming Calvin Klein and TOMMY HILFIGER into top lifestyle brands, striving to elevate PVH as a leading brand group | Retail Apparel and Fashion | 🇺🇸 New York | 22,000 | 1881 |
| 22 | [Ralph Lauren](https://www.tamtam.ai/c/ralph-lauren) (corporate.ralphlauren.com)<br>Global leader in luxury lifestyle products across apparel, footwear, accessories, home, fragrances, and hospitality, inspiring timeless style and authenticity for over 50 years | Retail Apparel and Fashion | 🇺🇸 New York | 21,641 | 1967 |
| 23 | [Memorial Sloan Kettering Cancer Center](https://www.tamtam.ai/c/memorial-sloan-kettering-cancer-center) (mskcc.org)<br>Specialized teams provide personalized cancer care, conduct innovative research, and train future scientists and clinicians worldwide. | Hospitals and Health Care | 🇺🇸 New York | 19,653 | 1884 |
| 24 | [Broadridge](https://www.tamtam.ai/c/broadridge) (broadridge.com)<br>Provide technology and operations platforms supporting financial services, processing communications, enabling trading, and enhancing investor experiences worldwide. | Financial Services | 🇺🇸 New York | 17,674 |  |
| 25 | [Hospital for Special Surgery](https://www.tamtam.ai/c/hospital-for-special-surgery) (hss.edu)<br>Academic medical center specializing in orthopedics and rheumatology with top national rankings, low complication rates, and multiple regional facilities. | Hospitals and Health Care | 🇺🇸 New York | 17,614 | 1863 |
| 26 | [GE Power](https://www.tamtam.ai/c/ge-power) (gepower.com)<br>A global energy leader offering technology, solutions, and services spanning the energy value chain, serving customers in over 150 countries | Renewable Energy Semiconductor Manufacturing | 🇺🇸 Schenectady | 17,248 |  |
| 27 | [Regeneron](https://www.tamtam.ai/c/regeneron) (regeneron.com)<br>Develops and commercializes life-transforming medicines for serious diseases, establishing new approaches in science, manufacturing, and health. Building a future in biopharmaceuticals. | Biotechnology Research | 🇺🇸 Tarrytown | 16,874 |  |
| 28 | [L3 Technologies](https://www.tamtam.ai/c/l3-technologies) (l3harris.com)<br>Develops advanced defense technologies and commercial solutions in pilot training, aviation security, night vision, weapons, maritime systems and space for worldwide deployment. | Defense and Space Manufacturing | 🇺🇸 New York | 15,734 |  |
| 29 | [IFF](https://www.tamtam.ai/c/iff) (iff.com)<br>Industry leader in food, beverage, health, and biosciences creating essential solutions globally with a diverse team of thinkers and cutting-edge technology | Chemical Manufacturing | 🇺🇸 New York | 15,308 |  |
| 30 | [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 |  |
| 31 | [Gap](https://www.tamtam.ai/c/gap) (gapinc.com)<br>Iconic global retailer specializing in denim and elevated American style clothing across fourteen hundred stores worldwide with a focus on community and diversity. | Retail | 🇺🇸 New York | 15,202 |  |
| 32 | [Synechron](https://www.tamtam.ai/c/synechron) (synechron.com)<br>Innovative consulting firm leveraging digital technology to deliver leading solutions in AI, digital, cloud, data, and software engineering for financial services and technology industries globally | Technology, Information and Internet | 🇺🇸 New York | 14,671 | 2001 |
| 33 | [Tiffany & Co.](https://www.tamtam.ai/c/tiffany-and-co) (tiffany.com)<br>Luxury jewelry and accessories company founded in 1837, known for innovative design, fine craftsmanship, and global cultural influence Operates worldwide | Retail Luxury Goods and Jewelry | 🇺🇸 New York | 14,000 | 1837 |
| 34 | [GlobalFoundries](https://www.tamtam.ai/c/globalfoundries) (gf.com)<br>Semiconductor manufacturer offering innovative process technology solutions, design, development, and fabrication services with global presence and diverse workforce | Semiconductor Manufacturing | 🇺🇸 Malta | 13,861 | 2009 |
| 35 | [Clinique](https://www.tamtam.ai/c/clinique) (clinique.com)<br>A leading skincare and makeup brand founded by dermatologists, offering clinically proven, allergy-tested solutions for remarkable skin results worldwide | Personal Care Product Manufacturing | 🇺🇸 New York | 11,697 | 1968 |
| 36 | [Montefiore Health System](https://www.tamtam.ai/c/montefiore-health-system) (montefiore.org)<br>Premier academic health system providing specialized medical education, innovative research, advanced technology, and coordinated care for diverse populations. | Hospitals and Health Care | 🇺🇸 Bronx | 11,619 |  |
| 37 | [University of Rochester](https://www.tamtam.ai/c/university-of-rochester) (rochester.edu)<br>Private research institution providing undergraduate and graduate degrees across seven schools while operating a major health system and NCAA athletics program. | Higher Education | 🇺🇸 Rochester | 11,592 | 1850 |
| 38 | [Moody's Analytics](https://www.tamtam.ai/c/moody-s-analytics) (moodys.com)<br>Financial intelligence and analytical tools provider empowering clients to make better decisions through expertise in risk, information resources, and innovative technology solutions | Financial Services | 🇺🇸 New York | 11,588 |  |
| 39 | [Datadog](https://www.tamtam.ai/c/datadog) (datadoghq.com)<br>Provider of essential monitoring platform for cloud applications, consolidating data from various sources to ensure optimal performance and user experience for DevOps teams | Software Development | 🇺🇸 New York | 10,888 | 2010 |
| 40 | [Weill Cornell Medicine](https://www.tamtam.ai/c/weill-cornell-medicine) (careers.weill.cornell.edu)<br>A leading medical institution in NYC, conducting cutting-edge research, providing top-notch patient care, and educating future physicians and scientists worldwide | Hospitals and Health Care | 🇺🇸 New York | 10,471 | 1898 |
| 41 | [Revlon](https://www.tamtam.ai/c/revlon) (revlon.com)<br>A global beauty company known for high-quality cosmetics, hair care, and fragrances sold in 150 countries through various retail channels | Personal Care Product Manufacturing | 🇺🇸 New York | 8,874 |  |
| 42 | [Nasdaq](https://www.tamtam.ai/c/nasdaq) (nasdaq.com)<br>This company aims to advance economic progress by powering economies, creating equitable opportunities, and contributing to a sustainable world | Financial Services | 🇺🇸 New York | 8,532 |  |
| 43 | [University of Rochester Medicine](https://www.tamtam.ai/c/university-of-rochester-medicine) (urmc.rochester.edu)<br>Academic medical center providing advanced patient care, conducting disease research, and educating future healthcare professionals including doctors, dentists, and nurses. | Hospitals and Health Care | 🇺🇸 Rochester | 8,483 |  |
| 44 | [Eastman Kodak Company](https://www.tamtam.ai/c/eastman-kodak-company) (kodak.com)<br>Leading global manufacturer specializing in commercial printing, advanced materials, and chemicals with extensive patents and research history. | Manufacturing | 🇺🇸 Rochester | 8,449 | 1892 |
| 45 | [MSCI Inc.](https://www.tamtam.ai/c/msci-inc) (msci.com)<br>Provider of research, data, and technology solutions enabling investors to analyze risk, return, and build effective portfolios globally. | Financial Services | 🇺🇸 New York | 8,085 |  |
| 46 | [MathWorks](https://www.tamtam.ai/c/mathworks) (mathworks.com)<br>Develops mathematical computing software like MATLAB and Simulink for engineers and scientists to accelerate discovery, innovation, and development, also used for teaching and research. | Software Development | 🇺🇸 Natick | 8,041 | 1984 |
| 47 | [MongoDB](https://www.tamtam.ai/c/mongodb) (mongodb.com)<br>A developer data platform empowering innovation through software and data solutions for modern applications, with a global customer base Visit mongodbcom | Software Development | 🇺🇸 New York | 8,013 | 2007 |
| 48 | [Columbia University Irving Medical Center](https://www.tamtam.ai/c/columbia-university-irving-medical-center) (cuimc.columbia.edu)<br>A leading clinical, research, and educational institution providing patient care, medical education, and public health services in northern Manhattan | Hospitals and Health Care | 🇺🇸 New York | 7,913 | 1767 |
| 49 | [Moog Inc.](https://www.tamtam.ai/c/moog-inc) (moog.com)<br>Innovative company working on cutting-edge technical projects with a strong focus on trust, teamwork, problem-solving, and valuing individuals | Aviation and Aerospace Component Manufacturing | 🇺🇸 East Aurora | 7,759 | 1951 |
| 50 | [Icahn School of Medicine at Mount Sinai](https://www.tamtam.ai/c/icahn-school-of-medicine-at-mount-sinai) (icahn.mssm.edu)<br>A leading medical school and research institution dedicated to training, research, and patient care to advance biomedical discoveries and improve outcomes | Hospitals and Health Care | 🇺🇸 New York | 7,423 | 1963 |
| 51 | [Binghamton University](https://www.tamtam.ai/c/binghamton-university) (binghamton.edu)<br>A top public university in the Northeast offering broad education, vibrant research programs, financial accessibility, diverse student body, and unique academic opportunities | Higher Education | 🇺🇸 Binghamton | 7,412 | 1946 |
| 52 | [Fractal](https://www.tamtam.ai/c/fractal) (fractal.ai)<br>Provides AI-powered decision-making tools and analytics services, supporting revenue growth, healthcare AI, and foundational AI research globally. | Business Consulting and Services | 🇺🇸 New York | 7,024 | 2000 |
| 53 | [Stony Brook Medicine](https://www.tamtam.ai/c/stony-brook-medicine) (stonybrookmedicine.edu)<br>A leading academic medical center with health sciences schools, research, and clinical care teams delivering innovative ideas in healthcare to patients worldwide | Hospitals and Health Care | 🇺🇸 Stony Brook | 5,786 |  |
| 54 | [DataArt](https://www.tamtam.ai/c/dataart) (dataart.com)<br>Global software engineering firm specializing in data-driven, cloud-native solutions, with a focus on professional growth, diversity, and employee autonomy | IT Services and IT Consulting | 🇺🇸 New York | 5,451 | 1997 |
| 55 | [Akums Drugs& Pharmaceuticals Ltd](https://www.tamtam.ai/c/akums-drugs-and-pharmaceuticals-ltd) (akums.in)<br>Leading pharmaceutical contract development and manufacturing for diverse formulations, including oral solids, liquids, injectables, personal care, and animal healthcare solutions. | Pharmaceutical Manufacturing | 🇺🇸 Delhi | 5,173 | 2004 |
| 56 | [Pall Corporation](https://www.tamtam.ai/c/pall-corporation) (pall.com)<br>Filtration, separation, and purification solutions for health, safety, environment, improving product quality, protecting assets, minimizing emissions, and advancing technology. | Manufacturing | 🇺🇸 Port Washington | 5,067 | 1946 |
| 57 | [Westchester Medical Center Health Network](https://www.tamtam.ai/c/westchester-medical-center-health-network) (wmchealth.org)<br>Provider of advanced medical care in NY's Hudson Valley, offering Level I trauma care, organ transplants, and neurovascular procedures to 35 million residents | Hospitals and Health Care | 🇺🇸 Valhalla | 4,961 | 1917 |
| 58 | [Verifone](https://www.tamtam.ai/c/verifone) (verifone.com)<br>Innovative payments architects shaping powerful commerce experiences globally with a future-first approach, digital focus, and industry leadership #CommerceExperts #ProvenLeader #NewBrand | Financial Services | 🇺🇸 New York | 4,702 | 1981 |
| 59 | [Standard Industries](https://www.tamtam.ai/c/standard-industries) (standardindustries.com)<br>A global industrial company with diverse holdings, technologies, and investments in building solutions, performance materials, logistics, real estate, and solar technology | Manufacturing | 🇺🇸 New York | 4,528 | 1886 |
| 60 | [Sprinklr](https://www.tamtam.ai/c/sprinklr) (sprinklr.com)<br>AI-native platform for unified customer experience management across social media, marketing, advertising, and contact center operations to provide consistent, real-time enterprise insights. | Software Development | 🇺🇸 New York | 4,424 | 2009 |
| 61 | [Momentive](https://www.tamtam.ai/c/momentive) (momentive.com)<br>A global company creating high-performance silicones and specialties to improve quality of life, drive innovation, and promote sustainability worldwide | Chemical Manufacturing | 🇺🇸 Niskayuna | 4,399 |  |
| 62 | [Verint](https://www.tamtam.ai/c/verint) (verint.com)<br>The company helps brands build lasting customer relationships by connecting work, data, and experiences to deliver differentiated experiences at scale | Software Development | 🇺🇸 Melville | 4,354 | 1994 |
| 63 | [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 |
| 64 | [Rensselaer Polytechnic Institute](https://www.tamtam.ai/c/rensselaer-polytechnic-institute) (rpi.edu)<br>A pioneering technological research university focused on advancing scientific and technological innovation, educating future leaders, and addressing global challenges for over 195 years | Higher Education | 🇺🇸 Troy | 4,257 | 1824 |
| 65 | [Wildlife Conservation Society](https://www.tamtam.ai/c/wildlife-conservation-society) (wcs.org)<br>Global wildlife conservation organization protecting wilderness, oceans, and wildlife through science, on-the-ground conservation efforts, education, and partnerships in 60 countries | Non-profit Organizations | 🇺🇸 Bronx | 4,131 | 1895 |
| 66 | [Celonis](https://www.tamtam.ai/c/celonis) (celonis.com)<br>It provides a platform for visualizing and optimizing business processes using existing data, benefiting companies and the environment. | Software Development | 🇺🇸 New York | 4,012 | 2011 |
| 67 | [Carestream](https://www.tamtam.ai/c/carestream) (carestream.com)<br>Provides digital X-ray products, X-ray film for medical, non-destructive testing markets, alongside product, technical, service support globally, holding 1,000+ patents. | Medical Equipment Manufacturing | 🇺🇸 Rochester | 3,895 | 2007 |
| 68 | [Entrust](https://www.tamtam.ai/c/entrust-minneapolis) (entrust.com)<br>Provides identity-centric security solutions, protecting people, devices, data. Fights fraud, cyber threats, secures identity lifecycle, ensures transaction confidence. Global presence, 150 countries. | Software Development | 🇺🇸 Minneapolis | 3,755 |  |
| 69 | [Long Island University](https://www.tamtam.ai/c/long-island-university) (liu.edu)<br>Provides access to diverse higher education programs, including pharmacy, global studies, and online courses, with a focus on academic excellence and community service | Higher Education | 🇺🇸 Brookville | 3,707 | 1926 |
| 70 | [The D. E. Shaw Group](https://www.tamtam.ai/c/the-d-e-shaw-group) (deshaw.com)<br>Global investment management firm combining quantitative tools and fundamental analysis to find returns across public and private markets through systematic and discretionary strategies. | Financial Services | 🇺🇸 New York | 3,518 | 1988 |
| 71 | [Steve Madden](https://www.tamtam.ai/c/steve-madden) (stevemadden.com)<br>Global fashion industry leader known for iconic footwear designs, including licensed and private label brands, with emphasis on retail, wholesale, licensing, and international business | Retail | 🇺🇸 Long Island City | 3,419 | 1990 |
| 72 | [Curia](https://www.tamtam.ai/c/curia) (curiaglobal.com)<br>Develops and manufactures biologics and small molecules, spanning discovery to commercialization, with regulatory and analytical support to accelerate life-changing therapeutics. | Pharmaceutical Manufacturing | 🇺🇸 Albany | 3,398 |  |
| 73 | [Production Resource Group](https://www.tamtam.ai/c/production-resource-group) (prg.com)<br>Global entertainment services provider delivering specialized technology, engineering, and creative solutions for theater, film, television, broadcast, concert touring, and corporate events worldwide. | Entertainment Providers | 🇺🇸 New Windsor | 3,392 |  |
| 74 | [Brookhaven National Laboratory](https://www.tamtam.ai/c/brookhaven-national-laboratory) (bnl.gov)<br>This company delivers transformative technology and discovery science to address various challenges in energy, environment, and nuclear fields through innovative research | Research Services | 🇺🇸 Upton | 3,317 | 1947 |
| 75 | [Federal Reserve Bank of New York](https://www.tamtam.ai/c/federal-reserve-bank-of-new-york) (newyorkfed.org)<br>Implementation of monetary policy, supervision of financial institutions, international operations, and financial services within the Second Federal Reserve District. | Financial Services | 🇺🇸 New York | 3,239 | 1914 |
| 76 | [Payoneer](https://www.tamtam.ai/c/payoneer) (payoneer.com)<br>Global partner for digital commerce, providing technology and connections for businesses worldwide to thrive in the new global economy | Financial Services | 🇺🇸 New York | 3,221 | 2005 |
| 77 | [Wiz](https://www.tamtam.ai/c/wiz-new-york) (wiz.io)<br>Identifies, removes critical risks across AWS, Azure, GCP, OCI, Alibaba Cloud, and Kubernetes for building faster and more securely. | Computer and Network Security | 🇺🇸 New York | 3,147 | 2020 |
| 78 | [HOK](https://www.tamtam.ai/c/hok) (hok.com)<br>A global firm offering design, architecture, engineering, and planning services to create sustainable and innovative solutions for clients and communities | Architecture and Planning | 🇺🇸 New York | 3,080 | 1955 |
| 79 | [Zeta Global](https://www.tamtam.ai/c/zeta-global) (zetaglobal.com)<br>Zeta is a cloud-based marketing technology company that helps brands acquire, retain, and grow customers through sophisticated AI-driven marketing solutions across various channels | Software Development | 🇺🇸 New York | 3,034 | 2007 |
| 80 | [Diligent](https://www.tamtam.ai/c/diligent) (diligent.com)<br>Provides AI-powered governance, risk, and compliance SaaS solutions through a consolidated platform for practitioners and board members to manage enterprise risk. | Software Development | 🇺🇸 New York | 3,022 |  |
| 81 | [Adelphi University](https://www.tamtam.ai/c/adelphi-university) (adelphi.edu)<br>A highly awarded doctoral research university in New York, offering personalized higher learning with a focus on liberal arts, sciences, and professional training | Higher Education | 🇺🇸 Garden City | 2,951 | 1896 |
| 82 | [New York Institute of Technology](https://www.tamtam.ai/c/new-york-institute-of-technology) (nyit.edu)<br>A nonprofit university offering undergraduate, graduate, and professional programs in various disciplines, with campuses worldwide and a network of alumni | Higher Education | 🇺🇸 New York | 2,946 | 1955 |
| 83 | [Peloton Interactive](https://www.tamtam.ai/c/peloton-interactive) (onepeloton.com)<br>Connected fitness company offering equipment, software, live and on-demand classes, apparel, and corporate wellness solutions for global members. | Wellness and Fitness Services | 🇺🇸 New York | 2,917 | 2011 |
| 84 | [MONTEFIORE MEDICAL CENTER](https://www.tamtam.ai/c/montefiore-medical-center) (cham.org)<br>A hospital & health care company located in Bronx, New York, providing medical services and care to individuals in the community | Hospitals and Health Care | 🇺🇸 Bronx | 2,905 |  |
| 85 | [NYU Winthrop Hospital](https://www.tamtam.ai/c/nyu-winthrop-hospital) (nyulangone.org)<br>A hospital merged with NYU Langone Health, offering updated company information, news, and job openings on their LinkedIn page | Hospitals and Health Care | 🇺🇸 Mineola | 2,880 | 1896 |
| 86 | [Albert Einstein College of Medicine](https://www.tamtam.ai/c/albert-einstein-college-of-medicine) (einsteinmed.edu)<br>Offers medical and graduate biomedical degrees, located in New York City, and is a not-for-profit, private, nonsectarian institution. | Education | 🇺🇸 Bronx | 2,873 | 1953 |
| 87 | [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 |
| 88 | [Arcesium](https://www.tamtam.ai/c/arcesium) (arcesium.com)<br>A leading fintech company providing advanced data, operations, and analytics platform for financial institutions, optimizing investment lifecycle with industry-specific capabilities | Software Development | 🇺🇸 New York | 2,704 | 2015 |
| 89 | [Leviton](https://www.tamtam.ai/c/leviton) (leviton.com)<br>A global leader in electrical devices, lighting solutions, networking, security, home automation, and data infrastructure products for residential, commercial, and industrial needs | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Melville | 2,593 | 1906 |
| 90 | [Yext](https://www.tamtam.ai/c/yext) (yext.com)<br>Leading brand visibility platform offering integrated tools and data-driven insights to manage search, social, and website discovery across global and local levels. | Software Development | 🇺🇸 New York | 2,536 | 2006 |
| 91 | [Two Sigma](https://www.tamtam.ai/c/two-sigma) (twosigma.com)<br>Quantitative investment management firm using artificial intelligence, data science, and rigorous research to capitalize on market opportunities and deliver alpha for clients. | Financial Services | 🇺🇸 New York | 2,414 | 2001 |
| 92 | [NYU Langone Hospital—Brooklyn](https://www.tamtam.ai/c/nyu-langone-hospital-brooklyn) (nyulangone.org)<br>NYU Langone Hospital – Brooklyn is now part of NYU Langone Health Stay updated on company information, news, and job openings | Hospitals and Health Care | 🇺🇸 Brooklyn | 2,367 | 1883 |
| 93 | [United States Military Academy at West Point](https://www.tamtam.ai/c/united-states-military-academy-at-west-point) (westpoint.edu)<br>A higher education institution based in NY, United States focused on training future military leaders at West Point Academy | Higher Education | 🇺🇸 West Point | 2,342 |  |
| 94 | [Braze](https://www.tamtam.ai/c/braze) (braze.com)<br>Cloud-based customer engagement platform for real-time data collection, cross-channel messaging, journey orchestration, and AI-powered experimentation to build lasting relationships and foster growth. | Software Development | 🇺🇸 New York | 2,308 | 2011 |
| 95 | [Squarespace](https://www.tamtam.ai/c/squarespace) (squarespace.com)<br>A design-driven platform empowering entrepreneurs worldwide to build online brands and businesses through websites, domains, ecommerce, and marketing tools | Software Development | 🇺🇸 New York | 2,206 | 2003 |
| 96 | [Squarepoint](https://www.tamtam.ai/c/squarepoint) (squarepoint-capital.com)<br>Develops quantitative investment strategies and automated trading systems leveraging data and technology to achieve high quality returns globally. | Financial Services | 🇺🇸 New York | 2,188 | 2014 |
| 97 | [PAR Technology](https://www.tamtam.ai/c/par-technology) (partech.com)<br>Provides foodservice technology solutions including point-of-sale, digital ordering, loyalty, back-office, payments, and hardware to streamline operations and enhance guest experiences. | Software Development | 🇺🇸 New Hartford | 2,154 | 1968 |
| 98 | [Bassett Healthcare Network](https://www.tamtam.ai/c/bassett-healthcare-network) (bassett.org)<br>An integrated health care system serving a rural region in upstate New York with hospitals, nursing facilities, health centers, and partners | Hospitals and Health Care | 🇺🇸 Cooperstown | 2,088 | 1922 |
| 99 | [Patheon](https://www.tamtam.ai/c/patheon) (patheon.com)<br>Provides industry-leading pharma services for drug development, clinical trials, and commercial manufacturing, partnering with pharmaceutical, biotech, and life science companies globally. | Pharmaceutical Manufacturing | 🇺🇸 Waltham | 2,072 |  |
| 100 | [Via](https://www.tamtam.ai/c/via-new-york) (ridewithvia.com)<br>The company specializes in developing innovative software for various organizations to improve their transportation systems and offer new digital services worldwide | Software Development | 🇺🇸 New York | 2,051 | 2012 |

## 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 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)
- [Financial Services companies in New York State](https://www.tamtam.ai/l/financial-services-companies-new-york-state) (1,076)
- [SaaS companies in New York State](https://www.tamtam.ai/l/saas-companies-new-york-state) (1,060)
- [Professional services firms in New York State](https://www.tamtam.ai/l/professional-services-firms-new-york-state) (955)
- [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)
- [Subscription businesses in New York State](https://www.tamtam.ai/l/subscription-businesses-new-york-state) (485)
- [Consulting firms in New York State](https://www.tamtam.ai/l/consulting-firms-new-york-state) (474)
- [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)
- [Marketing and communications agencies in New York State](https://www.tamtam.ai/l/marketing-agencies-new-york-state) (449)
- [Hospitals and Health Care companies in New York State](https://www.tamtam.ai/l/hospitals-and-health-care-companies-new-york-state) (408)
- [Venture Capital and Private Equity Principals companies in New York State](https://www.tamtam.ai/l/venture-capital-and-private-equity-principals-companies-new-york-state) (398)
- [Manufacturers in New York State](https://www.tamtam.ai/l/manufacturers-new-york-state) (398)

## The same list elsewhere in United States

- [Companies with in-house R&D in the United States](https://www.tamtam.ai/l/r-and-d-companies-united-states) (6,796)
- [Companies with in-house R&D in California](https://www.tamtam.ai/l/r-and-d-companies-california) (1,276)
- [Companies with in-house R&D in Texas](https://www.tamtam.ai/l/r-and-d-companies-texas) (442)
- [Companies with in-house R&D in Massachusetts](https://www.tamtam.ai/l/r-and-d-companies-massachusetts) (396)
- [Companies with in-house R&D in Illinois](https://www.tamtam.ai/l/r-and-d-companies-illinois) (322)
- [Companies with in-house R&D in Michigan](https://www.tamtam.ai/l/r-and-d-companies-michigan) (287)
- [Companies with in-house R&D in Ohio](https://www.tamtam.ai/l/r-and-d-companies-ohio) (277)
- [Companies with in-house R&D in Pennsylvania](https://www.tamtam.ai/l/r-and-d-companies-pennsylvania) (255)
- [Companies with in-house R&D in New Jersey](https://www.tamtam.ai/l/r-and-d-companies-new-jersey) (224)
- [Companies with in-house R&D in Florida](https://www.tamtam.ai/l/r-and-d-companies-florida) (221)
- [Companies with in-house R&D in Alabama](https://www.tamtam.ai/l/r-and-d-companies-alabama) (214)
- [Companies with in-house R&D in Georgia](https://www.tamtam.ai/l/r-and-d-companies-georgia) (173)
- [Companies with in-house R&D in Virginia](https://www.tamtam.ai/l/r-and-d-companies-virginia) (166)
- [Companies with in-house R&D in North Carolina](https://www.tamtam.ai/l/r-and-d-companies-north-carolina) (158)
- [Companies with in-house R&D in Wisconsin](https://www.tamtam.ai/l/r-and-d-companies-wisconsin) (154)
- [Companies with in-house R&D in Minnesota](https://www.tamtam.ai/l/r-and-d-companies-minnesota) (146)
- [Companies with in-house R&D in Washington State](https://www.tamtam.ai/l/r-and-d-companies-washington-state) (140)
- [Companies with in-house R&D in Colorado](https://www.tamtam.ai/l/r-and-d-companies-colorado) (113)
- [Companies with in-house R&D in Maryland](https://www.tamtam.ai/l/r-and-d-companies-maryland) (107)
- [Companies with in-house R&D in Indiana](https://www.tamtam.ai/l/r-and-d-companies-indiana) (104)
- [Companies with in-house R&D in New York](https://www.tamtam.ai/l/r-and-d-companies-new-york) (223)
- [Companies with in-house R&D in San Francisco](https://www.tamtam.ai/l/r-and-d-companies-san-francisco) (147)
- [Companies with in-house R&D in Houston](https://www.tamtam.ai/l/r-and-d-companies-houston) (129)
- [Companies with in-house R&D in San Jose](https://www.tamtam.ai/l/r-and-d-companies-san-jose) (103)

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Source: https://www.tamtam.ai/l/r-and-d-companies-new-york-state