Company lists · Data refreshed September 2026

Top 25 Investment firms based in Boston, United States

Name: Investment firms based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 199 companies tracked

RevenueBase identified 199 investment firms headquartered in Boston, United States as of September 2026 and tracks 101,681 professional contacts across them, including 55,739 with verified work emails. Across the United States, New York is the largest hub for this category (996 companies); Boston has 199.

This list covers investment firms headquartered in Boston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review

199Companies

101,681Contacts tracked

55,739Verified emails

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The 25 largest investment firms based in Boston, United States

Ranked by team size

Top 25 of 199 investment firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to investment firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Fidelity Investments	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	10001+	80,843 contacts →
	Indirect evidence “Fidelity’s mission is to strengthen the financial well-being of our customers and deliver better outcomes for the clients and businesses we serve.” Source: RevenueBase Database · checked Sep 14, 2026
2	Wellington Management	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,436 contacts →
	Strong evidence “For almost 100 years, we have chosen to do things differently, including the way we structure our ownership model, organization, and investment platform.” Source: RevenueBase Database · checked Sep 14, 2026
3	MFS Investment Management	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,738 contacts →
	Indirect evidence “In 1924, MFS launched the US’ first open-end mutual fund.” Source: RevenueBase Database · checked Sep 14, 2026
4	Cambridge Associates	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,792 contacts →
	Strong evidence “We are a global investment firm that aims to help pension plans, endowments & foundations, healthcare systems, and private clients achieve their investment goals and maximize…” Source: RevenueBase Database · checked Sep 14, 2026
5	Harbourvest Partners	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,353 contacts →
	Indirect evidence “HarbourVest is an independent, global private markets firm with over 43 years of experience and $161 billion assets under management as of December 31, 2025.” Source: RevenueBase Database · checked Sep 14, 2026
6	Loomis, Sayles & Company	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	501-1,000	1,010 contacts →
	Strong evidence “For a century, Loomis, Sayles & Company has built a legacy focused on fulfilling the investment needs of institutional and retail clients worldwide.” Source: RevenueBase Database · checked Sep 14, 2026
7	Putnam Investments	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	n/a	995 contacts →
	Indirect evidence “Diversified equity-only asset manager serving clients and investors worldwide since 1937.” Source: RevenueBase Database · checked Sep 14, 2026
8	TA Associates	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	881 contacts →
	Indirect evidence “TA is a leading global private equity firm focused on scaling growth in profitable companies.” Source: RevenueBase Database · checked Sep 14, 2026
9	GMO	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	780 contacts →
	Strong evidence “For nearly 50 years, GMO has partnered with a broad range of sophisticated institutions, financial intermediaries, and families to provide the investment expertise they need to…” Source: RevenueBase Database · checked Sep 14, 2026
10	Eaton Vance	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	501-1,000	517 contacts →
	Indirect evidence “Eaton Vance provides advanced investing to forward-thinking investors, applying discipline and long-term perspective to the management of client portfolios.” Source: RevenueBase Database · checked Sep 14, 2026
11	Baystate Financial	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	501-1,000	506 contacts →
	Indirect evidence “For over a century, Baystate Financial has been helping clients gain clarity and financial independence-empowering them to build, protect, and distribute wealth with confidence.” Source: RevenueBase Database · checked Sep 14, 2026
12	Nepc, LLC	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	463 contacts →
	Strong evidence “NEPC, LLC is a full-service, investment consulting firm, serving more than 400 clients with over $1.9T assets under advisement.” Source: RevenueBase Database · checked Sep 14, 2026
13	Capstone Partners	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	276 contacts →
	Strong evidence “For over 20 years, Capstone Partners has been a trusted advisor to leading middle market companies, offering a fully integrated range of investment banking and financial advisory…” Source: RevenueBase Database · checked Sep 14, 2026
14	Moors & Cabot	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	209 contacts →
	Indirect evidence “Since its founding in 1890, Moors & Cabot and its people have defined the meaning of financial services.” Source: RevenueBase Database · checked Sep 14, 2026
15	Boston Partners	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	189 contacts →
	Indirect evidence “For more than 30 years, we've combined attractive valuations, strong fundamentals, and positive business momentum in every portfolio we manage.” Source: RevenueBase Database · checked Sep 14, 2026
16	State Street Global Advisors	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	155 contacts →
	Indirect evidence “For four decades, State Street Global Advisors has served the world’s governments, institutions and financial advisors.” Source: RevenueBase Database · checked Sep 14, 2026
17	Weiss Asset Management	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	150 contacts →
	Strong evidence “For over 30 years, Weiss Asset Management has developed proprietary value-based investment strategies designed to deliver high risk-adjusted returns to our investors, who include…” Source: RevenueBase Database · checked Sep 14, 2026
18	CW Advisors	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	138 contacts →
	Strong evidence “CW Advisors (formerly Congress Wealth Management LLC) is an SEC-registered investment management firm, developing innovative wealth solutions for high-net-worth individuals…” Source: RevenueBase Database · checked Sep 14, 2026
19	Congress Asset Management	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	101 contacts →
	Strong evidence “Congress Asset Management is a privately owned investment management firm based in Boston, MA.” Source: RevenueBase Database · checked Sep 14, 2026
20	Breckinridge Capital Advisors	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	100 contacts →
	Strong evidence “Breckinridge Capital Advisors is a Boston-based, independently owned asset manager working to provide the highest caliber of investment management.” Source: RevenueBase Database · checked Sep 14, 2026
21	Loring, Wolcott & Coolidge Trust, LLC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	100 contacts →
	Indirect evidence “At Loring, Wolcott & Coolidge, we all share a common goal: to provide wealth management solutions based on a clear understanding of each client's goals, priorities and values.” Source: RevenueBase Database · checked Sep 14, 2026
22	Gw&k Investment Management	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	100 contacts →
	Strong evidence “Founded in 1974, GW & K Investment Management is a dynamic Boston-based investment management firm that offers active equity and fixed income investment solutions to meet the…” Source: RevenueBase Database · checked Sep 14, 2026
23	Boston Trust Walden	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	90 contacts →
	Strong evidence “We are an independent, employee-owned organization that specializes in actively managed multi-asset and equity investment strategies for individual and institutional investors.” Source: RevenueBase Database · checked Sep 14, 2026
24	Cerulli Associates	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	71 contacts →
	Indirect evidence “For over 30 years, Cerulli has been at the forefront of the industry, delivering groundbreaking market intelligence.” Source: RevenueBase Database · checked Sep 14, 2026
25	Appleton Partners, INC	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	65 contacts →
	Strong evidence “As a trusted wealth management partner since 1986, Appleton Partners takes equal stock in relationships and investment performance to meet the individual needs of our clients.” Source: RevenueBase Database · checked Sep 14, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: investment firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names investment firms.
Partial evidence: Its own public description names part of investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name investment firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 199 investment firms based in Boston, United States

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Investment firms based in Boston, United States at a glance

As of Sep 14, 2026

54.8%Verified-email coverage

511.0Average contacts per company

11-50Median size (employees)

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 199 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among investment firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Boston, United States whose own description of what they do matches “investment firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names investment firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among investment firms, and records with no verified work email. Companies headquartered outside Boston are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 55,739 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 14, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Investment firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names investment firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many investment firms are there based in Boston, United States?

RevenueBase identified 199 investment firms headquartered in Boston, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Fidelity Investments, headquartered in Boston, tops this list with the largest team on record.

Which city in the United States has the most investment firms?

New York leads the United States with 996 headquartered companies, followed by Chicago (285) and Dallas (281). Boston has 199.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 55,739 verified decision-maker contacts tracked across these 199 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.