| # | Company | Employees |
|---|---|---|
| 1 |
Fidelity Investmentsfidelity.com
Financial well-being through diversified market-leading services for individuals, families, employers, wealth management firms, and institutions using trillions in administered and discretionary assets. |
84,668 |
| 2 |
State Streetstatestreet.com
Global financial leader providing comprehensive investment services, institutional asset management, multi-asset trading, and digital solutions to enhance portfolio performance and decision making. |
46,913 |
| 3 |
Liberty Mutual Insurancelibertymutualgroup.com
Global leader in property and casualty insurance dedicated to fostering career growth, social responsibility, sustainability, diversity, and innovative solutions for customers worldwide |
37,734 |
| 4 |
Santander USsantanderus.com
Provides auto, retail, commercial, and investment banking services alongside wealth management for millions of customers across various US hubs and global markets. |
13,806 |
| 5 |
MassMutualmassmutual.com
Providing mutual life insurance and financial security services focused on community support, shared dependence, and long-term happiness. |
13,000 |
| 6 |
John Hancockjohnhancock.com
Providing life insurance, financial planning, and community support services focused on helping customers achieve healthier, longer, and better lives. |
5,048 |
| 7 |
Blue Cross Blue Shield of Massachusettsbluecrossma.org
Provides health insurance coverage to over 3 million members, focusing on community wellness, inclusivity, and employee development in Massachusetts. |
4,070 |
| 8 |
Wellington Managementwellington.com
Independent investment management firm serving diverse clients worldwide with comprehensive capabilities across global equity, fixed income, alternatives, and private markets. |
3,609 |
| 9 |
MFS Investment Managementmfs.com
Global investment manager offering active management, disciplined investing, risk management, serving financial advisors, intermediaries, and institutional clients worldwide. |
2,971 |
| 10 |
Eastern Bankeasternbank.com
Provides banking, wealth management, and investment solutions for consumers and businesses across eastern Massachusetts, New Hampshire, Rhode Island, and Connecticut. |
2,498 |
| 11 |
Columbia Threadneedle Investmentscolumbiathreadneedle.com
Global investment firm offering diverse expertise, sustainable investment decisions, and continuous improvement to manage over $637 billion for a better future |
2,453 |
| 12 |
State Street Investment Managementstatestreet.com
Delivers global investment solutions, managing diverse institutional assets through indexing and ETFs while providing cost-effective strategies for intermediaries and investors across sixty countries. |
2,348 |
| 13 |
Bain Capitalbaincapital.com
Global investment firm managing assets across private equity, credit, public equity, venture capital, and real estate to create impact for diverse stakeholders. |
2,294 |
| 14 |
Plymouth Rock Assuranceplymouthrock.com
Leading Northeast auto and home insurance provider offering unique customer services and career opportunities with a strong, committed team. |
2,263 |
| 15 |
Devoted Healthdevoted.com
Dedicated to improving health and well-being for seniors through personalized care, advanced technology, and partnerships with top healthcare providers |
2,197 |
| 16 |
Rockland Trustrocklandtrust.com
A Massachusetts-based full-service commercial bank offering banking, investment, and insurance services to businesses and individuals through various branches and centers |
2,059 |
| 17 |
Natixis Investment Managersnatixis.com
Multi-affiliate asset management firm providing diverse investment solutions, active management expertise, and sustainable ESG strategies to global clients for long-term financial goals. |
1,990 |
| 18 |
Berkshire Hathaway Specialty Insurancebhspecialty.com
Providing tailored specialty insurance solutions and claims services with strong financial backing, focusing on customer flexibility and satisfaction. |
1,933 |
| 19 |
Risk Strategies Companyus.bbrown.com
Providing custom insurance solutions, consulting, and wealth management with a strategic, holistic approach to protect clients' valuable assets. |
1,921 |
| 20 |
Cambridge Associatescambridgeassociates.com
Global investment firm providing tailored portfolio management and advisory services to institutional clients aiming for outperformance and impact. |
1,886 |
| 21 |
Comparion Insurance Agencycomparioninsurance.com
This company offers flexible insurance solutions from Liberty Mutual and other providers through knowledgeable agents who assist customers in finding the right coverage |
1,883 |
| 22 |
Commonwealth Care Alliancecommonwealthcarealliance.org
Mission-driven healthcare organization providing integrated, person-centered care and innovative health plans for individuals with significant needs in Massachusetts. |
1,503 |
| 23 |
HarbourVest Partnersharbourvest.com
An independent global private markets firm with over 40 years of experience managing $117 billion in assets, offering diverse investment opportunities worldwide |
1,443 |
| 24 |
DentaQuestdentaquest.com
A purpose-driven health care company dedicated to improving oral health through Preventistryยฎ, managing benefits for millions and expanding direct patient care in underserved areas |
1,406 |
| 25 |
Digital Federal Credit Uniondcu.org
A top-20 credit union with over one million members offering innovative technology, focusing on member experience excellence and promoting financial success |
1,317 |
| 26 |
Homesite Insurancego.homesite.com
Offering home, renter, life, small business, condo, and flood insurance with a focus on direct online customer experience. |
1,259 |
| 27 |
Tufts Health Plantuftshealthplan.com
A health plan company dedicated to guiding and empowering individuals to lead healthier lives |
1,259 |
| 28 | 1,239 | |
| 29 |
Loomis, Sayles & Companyloomissayles.com
Investment management firm providing institutional and mutual fund clients worldwide with research-driven, risk-aware, value-focused portfolio solutions across asset classes. |
1,097 |
| 30 |
Berkshireberkshireresidentialinvestments.com
A people-focused investment management company specializing in US residential real estate, managing $275 billion in assets for global institutional clients |
1,083 |
| 31 |
Santander USsantanderus.com
Diversified financial business providing retail banking, commercial loans, consumer finance, private wealth management, and investment banking services across the United States for millions. |
1,040 |
| 32 |
Arbella Insurance Grouparbella.com
Affordable car, home, and business insurance services in Massachusetts, Connecticut, New Hampshire, and Rhode Island with community focus. |
1,030 |
| 33 | 1,022 | |
| 34 |
Putnam Investmentsputnam.com
Global asset management firm providing diversified equity-only investment strategies to clients and investors worldwide as a subsidiary of Franklin Templeton since 1937. |
977 |
| 35 |
Amundi Pioneeramundi.com
A financial services company recently rebranded as Amundi US, providing investment management solutions Follow them at their new home |
958 |
| 36 |
The Cooperative Bank of Cape Codthecooperativebankofcapecod.com
A community bank on Cape Cod since 1921, prioritizing customer-centric service, earning recognition as Best Bank to Work For in 2020 |
951 |
| 37 |
Berkshire Bankberkshirebank.com
A relationship-driven bank providing financial expertise in New England and New York, offering tailored banking solutions through various divisions |
936 |
| 38 |
WellSense Health Planwellsense.org
A nonprofit health plan in Massachusetts & New Hampshire providing Medicare, Medicaid, and Individual & Family plans focused on member needs |
926 |
| 39 |
Gordon Brothersgordonbrothers.com
A trusted partner since 1903, providing expertise, operational experience, and capital for valuations, dispositions, operations, and investments worldwide |
922 |
| 40 |
RMR Grouprmrgroup.com
A leading US alternative asset management company specializing in commercial real estate with over $41 billion in assets under management |
872 |
| 41 |
BNY Mellon | Eagle Investment Systemsbnymellon.com
Specializing in data and analytics solutions, we leverage technology to deliver client-centric solutions for financial institutions |
737 |
| 42 |
NACA - Neighborhood Assistance Corporation of Americanaca.com
A non-profit organization advocating for economic justice through home ownership, offering affordable mortgage options and assistance with loan modifications |
710 |
| 43 |
Salem Five Banksalemfive.com
A long-standing financial institution offering sophisticated retail and commercial banking products and services through innovative technology to simplify customers' lives |
708 |
| 44 |
Lawleylawleyinsurance.com
A regional insurance firm specializing in property, casualty, and personal insurance, as well as employee benefits and risk management consulting with multiple office locations |
662 |
| 45 |
HealthNow New York Inc.highmark.com
A leading health care company in upstate New York, providing access to quality health care, innovative solutions, and improving outcomes through partnerships |
637 |
| 46 |
Safety Insurancesafetyinsurance.com
A property and casualty insurance company prioritizing service and safety for customers through a wide range of insurance products |
610 |
| 47 |
Coveryscoverys.com
A company specializing in medical professional liability insurance, data analytics, and risk mitigation resources to help healthcare providers improve outcomes and focus on patients |
603 |
| 48 |
Amundi USamundi.com
A global asset manager offering investment solutions in fixed-income, equity, and multi-asset, with a focus on responsible investing and client partnerships worldwide |
598 |
| 49 |
Summit Partnerssummitpartners.com
Global investment firm focusing on growth equity, fixed income, and public equity across technology, healthcare, and diverse growth sectors. |
588 |
| 50 |
Middlesex Savings Bankmiddlesexbank.com
A $6 billion mutual bank founded in 1835, committed to serving the community with fair banking products, exceptional service, and support for local businesses |
586 |
| 51 | 566 | |
| 52 |
Eaton Vanceeatonvance.com
Provides disciplined, long-term investment management and wealth solutions through diverse strategies, serving clients worldwide with innovation and exemplary service. |
546 |
| 53 |
Arrowstreet Capital, Limited Partnershiparrowstreetcapital.com
An independent quantitative investment firm based in Boston, specializing in systematic investment processes utilizing research, technology, and collaboration to deliver sustainable performance |
541 |
| 54 |
Mass General Brigham Health Planmassgeneralbrighamhealthplan.org
A health plan company focused on members' needs, provider connectivity, and continuous improvement with a partnership with Mass General Brigham |
475 |
| 55 |
Acadian Asset Managementacadian-asset.com
Global investment manager applying fundamental insights and systematic approach to find attractive opportunities across various strategies, using data-driven techniques for decision-making |
456 |
| 56 |
Lendbuzzlendbuzz.com
An AI auto finance platform using alternative data and machine-learning to provide fair credit access for car purchases to underserved consumers and support dealership growth |
389 |
| 57 |
The Andover Companiesandovercompanies.com
Mutual insurance company providing personal and commercial property coverage, committed to protecting policyholders and supporting local independent agents. |
371 |
| 58 |
Sentinel Groupsentinelgroup.com
Employee benefits provider streamlining the process for businesses and employees, making it easy for both parties to navigate and understand |
362 |
| 59 |
Northern Banknbtc.com
A leading New England bank offering comprehensive banking solutions, community investment, and top-rated performance for businesses and individuals |
313 |
| 60 |
Berkshire Partnersberkshirepartners.com
Specialist investor focusing on U.S. middle-market companies across services, healthcare, industrials, and technology sectors with growth partnerships. |
288 |
| 61 |
Capital Management Services, LPcms-collect.com
A nationally recognized leader in accounts receivable management services, specializing in recovery for top credit card issuers and banks |
277 |
| 62 |
SCSscsfinancial.com
An investment and wealth management firm based in Boston, serving families, family offices, and institutional investors, managing approximately $30 billion in assets |
269 |
| 63 |
Income Research + Managementincomeresearch.com
Privately owned independent firm providing fixed income investment management through security selection and risk management for institutional and private clients via boutique service. |
241 |
| 64 |
Geode Capital Managementgeodecapital.com
Boston based investment firm managing over one trillion dollars through systematic core beta exposures across equity and niche asset classes for global clients. |
237 |
| 65 |
Moors & Cabotmoorscabot.com
Established in 1890, the company provides financial services including retail and institutional sales of stocks and bonds, wealth management, and investment tools |
219 |
| 66 |
Charlesbank Capital Partnerscharlesbank.com
Middle-market private investment firm specializing in management-led buyouts, growth capital, opportunistic credit, and technology investments with flexible structures. |
213 |
| 67 |
THL Partnersthl.com
Boston-based private equity firm investing in middle-market growth companies in Financial Technology & Services, Healthcare, and Technology & Business Solutions Expertise in generating superior returns |
204 |
| 68 |
Dedham Savingsdedhamsavings.com
A community-focused financial institution offering a wide range of banking services and support for individuals, families, and businesses |
199 |
| 69 |
Wellfleetwellfleetinsurance.com
A provider of customer-centric accident and health insurance products, offering quality service and protection against risk throughout all stages of life |
197 |
| 70 |
GW&K Investment Managementgwkinvest.com
A Boston-based investment management firm founded in 1974, offering active equity and fixed income solutions through fundamental research and consistent investment strategies |
197 |
| 71 |
Bracebridge Capital, LLCbracebridgecapital.com
A leading hedge fund manager with $12 billion in assets under management, specializing in global fixed income strategies for institutional investors |
181 |
| 72 |
Norfolk & Dedham Insurancendgroup.com
A group of mutual insurance companies offering protection for homes, autos, and businesses through a network of independent agents since 1825 |
167 |
| 73 |
KJH Financial Serviceskjhfinancialservices.com
Financial services company helping clients achieve their life goals through comprehensive planning while managing financial uncertainty Start planning today to secure your future |
134 |
| 74 |
eSecLendingeseclending.com
Independent securities lending agent providing tailored solutions for higher returns, transparency, and alignment of interests compared to traditional programs Focus on best execution and price transparency |
129 |
| 75 |
Great Hill Partnersgreathillpartners.com
Private equity firm investing $100M-$750M in high-growth software, financial services, healthcare, consumer, and business services companies. |
118 |
| 76 |
Mellon Capitalmellon.com
A specialist multi-asset investment management firm dedicated to serving sophisticated investors, offering a range of capabilities under the brand Mellon |
116 |
| 77 |
First Citizens'โ Federal Credit Unionfirstcitizens.org
A premier financial institution in southeastern Massachusetts, offering personalized services and innovative products to enhance members' financial status and stability |
115 |
| 78 |
Valens Researchvalens-research.com
Global investment services firm with specialized research boutiques in equities and credit, prioritizing philanthropy, community well-being, and corporate social responsibility |
114 |
| 79 |
Disability Management Services, Inc.disabilitymanagementservices.com
Specializing in disability product management, this third-party administrator and consulting firm offers efficient and customized solutions to leading insurers and reinsurers |
102 |
| 80 |
Breckinridge Capital Advisorsbreckinridge.com
Provides high-quality investment management services to high-net-worth individuals and large institutions through financial advisors and consultants. |
95 |
| 81 |
HighVista Strategieshighvistastrategies.com
Employee-owned alternative asset manager in Boston since 2004, managing $10 billion globally Specializing in structurally inefficient markets for high-conviction investment opportunities |
95 |
| 82 |
Eventide Asset Managementeventideinvestments.com
A pioneering asset management firm focused on values-based investing through a biblical worldview, seeking to advance the global common good |
90 |
| 83 |
Constitution Capital Partnersconcp.com
A leading alternative asset manager in private equity and credit, specializing in disciplined, value-oriented investments with a strong track record |
88 |
| 84 |
Grimes & Companygrimesco.com
A Registered Investment Advisor offering portfolio and wealth management services with a highly experienced team and a focus on disciplined asset management and strong performance |
86 |
| 85 |
Bolton Global Capitalboltonglobal.com
A global wealth management firm providing independent financial services to clients worldwide, managing over $12 billion in assets through affiliated advisors |
84 |
| 86 |
Trillium Asset Managementtrilliuminvest.com
Provides ESG-focused investment strategies and services, integrating values with active ownership to deliver long-term value and positive social impact. |
80 |
| 87 |
SJL Insurance Servicessjlins.co.uk
UK-based commercial insurance broker offering high-quality services to national and international clients, with expertise in specialist products for various market groups |
79 |
| 88 |
Massachusetts Property Insurance Underwriting Associationmpiua.com
A residual market insurance association in Massachusetts providing fair access to insurance for high-risk properties through shared losses among member companies |
75 |
| 89 |
Energi Insurance Services, Inc.emaxxgroup.com
Specialized insurance and risk management solutions provider serving targeted sectors in the US & Canada with traditional and captive insurance programs |
70 |
| 90 |
Sullivan Insurance Groupsullivangroup.com
Insurance and risk management services provider for individuals and small to mid-sized businesses, offering tailored coverage options and expert counsel since 1957 |
69 |
| 91 |
Signator Investors, Inc.signatorinvestors.com
A leader in financial services industry, empowering independent financial professionals nationwide with innovative business models and unique growth opportunities |
68 |
| 92 |
Northeast Retirement Servicesnrstpa.com
Institutional services provider specializing in transfer agency, trust accounting, fund solutions, and fiduciary services with $14 trillion in assets under administration |
68 |
| 93 |
Welch & Forbes LLCwelchforbes.com
A full-service wealth management firm with over 180 years of experience, offering customized financial solutions, investment management, trust services, and personalized planning |
65 |
| 94 |
The Boston Company Asset Managementmellon.com
A multi-asset asset management firm based in Boston, now operating as Mellon, providing investment services and capabilities through Mellon Investments Corporation |
61 |
| 95 |
Corcoran & Havlin Insurance Groupchinsurance.com
An experienced insurance group providing commercial, personal, and employee benefits coverage with a focus on customized solutions and outstanding customer service |
58 |
| 96 |
Monument Groupmonumentgroup.com
A global full-service capital advisory firm specializing in raising funds for alternative investments, offering capital formation and liquidity solutions |
57 |
| 97 |
CCR Wealth Managementccrwealth.com
A wealth management firm offering personalized financial planning solutions, portfolio management, insurance strategies, and investment management to individuals, corporations, and institutions |
54 |
| 98 |
Boston Common Asset Managementbostoncommonasset.com
Active global equity investor focused on sustainable investing, women-led, employee-owned, and leader in shareholder engagement since 2003. |
54 |
| 99 |
IGP - International Group Programigpinfo.com
IGP is a global network of life insurance companies offering employee benefits solutions worldwide with a focus on quality service |
52 |
| 100 |
Longfellow Investment Managementlongfellowim.com
Employee-owned investment management firm specializing in domestic fixed income, equity, and alternative strategies Focus on minimizing portfolio volatility for attractive long-term returns |
52 |
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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 Oct 24, 2026.
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The same list elsewhere in United States
- Financial services firms in the United States 5,016
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