Company lists · Data refreshed September 2026

Top 25 Co-investment firms based in Boston, United States

Name: Co-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 27, 2026 148 companies tracked

RevenueBase identified 148 company matches for co-investment firms associated with Boston, United States as of September 2026 and tracks 6,580 professional contacts across them, including 3,827 with verified work emails. Across the United States, New York is the largest hub for this category (984 companies); Boston has 148.

This list covers company matches for co-investment firms associated with Boston, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

148Companies

6,580Contacts tracked

3,827Verified emails

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The 25 largest co-investment firms based in Boston, United States

Ranked by team size

Top 25 of 148 company matches for co-investment firms based in Boston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Bain Capital	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,068 contacts →
	Exact match “Founded in 1984, Bain Capital is one of the world’s leading private investment firms.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Harbourvest Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,353 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	TA Associates	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	201-500	881 contacts →
	Exact match “TA is a leading global private equity firm focused on scaling growth in profitable companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Arrowstreet Capital, Limited Partnership	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	501-1,000	546 contacts →
	Exact match “Founded in Arrowstreet Capital is an independent private partnership based in Boston, Massachusetts.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Charlesbank Capital Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	51-200	236 contacts →
	Exact match “Based in Boston and New York City, Charlesbank is a leading middle-market private investment firm with $21.5 billion in assets under management as of 3/31/2026.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Spectrum Equity	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	51-200	94 contacts →
	Exact match “Founded in 1994, Spectrum Equity is a leading growth equity firm with offices in Boston, San Francisco, and London.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Highvista Strategies	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	51-200	91 contacts →
	Exact match “HighVista Strategies LLC is an employee-owned alternative asset manager that brings investors alpha opportunities in structurally inefficient markets.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Underscore VC	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	75 contacts →
	Exact match “Underscore VC is a Boston-based venture capital firm backing bold B2B software entrepreneurs at pre-Seed and Seed.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Parthenon Capital	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	68 contacts →
	Exact match “Parthenon Capital Partners (“Parthenon” or “Parthenon Capital”) is a private equity firm that partners with and invests in management teams and their companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Monument Group	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	59 contacts →
	Exact match “Monument Group is a leading global independent full-service capital advisory and fundraising partner in alternative investments with offices in the U.S, Europe and Asia.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Cove Hill Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	51-200	53 contacts →
	Exact match “Cove Hill Partners is a private equity firm focused on partnering with outstanding management teams to build market-leading technology and consumer companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Copley Equity Partners LLC	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	42 contacts →
	Exact match “Copley Equity Partners is a private investment firm based in Boston, MA, and Denver, CO.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	PJC	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	n/a	38 contacts →
	Exact match “PJC is an early-stage venture capital firm focused on investing in, supporting, and building relationships with entrepreneurs who are creating the future.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Solamere Capital, LLC	Exact match	Boston, United StatesHQ recorded Sep 27, 2026	11-50	37 contacts →
	Exact match “Founded in 2008, Solamere is a multi-strategy private equity firm with offices in Boston and New York City.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Conjoin Group	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	201-500	36 contacts →
	Exact match “The ConJoin Group aligns with Venture Capital and Private Equity firms by investing our own capital,$250M in committed funds, and delivering a suite of services designed to…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Abrams Capital	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	32 contacts →
	Exact match “Abrams Capital is a Boston-based investment firm founded in by David Abrams.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Yellow Wood Partners, LLC	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	31 contacts →
	Exact match “Yellow Wood Partners invests exclusively in the consumer industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Raptor Group	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	27 contacts →
	Exact match “At The Raptor Group, we source and invest in companies across various stages and asset classes, ranging from early stage to both private and public equity to funds.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Digital Fuel Capital	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	26 contacts →
	Exact match “We are passionate about digital marketing: the marriage of science and art, the ability to test and innovate rapidly and the opportunities to serve distinct consumer interests and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Ethos Capital	Exact match	Boston, United StatesHQ recorded Sep 27, 2026	11-50	25 contacts →
	Exact match “Ethos Capital is an operations-focused investment firm that partners with information service companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Glouston Capital Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	25 contacts →
	Exact match “Glouston Capital Partners is a 100% employee-owned private equity investment specialist with more than 30 years of dedicated experience and over $3.4 billion in committed capital…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	GFI Partners	Exact match	Boston, United StatesHQ recorded Sep 27, 2026	11-50	25 contacts →
	Exact match “GFI Partners is a diversified investment firm specializing in real estate development, private equity, and venture capital.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Nonantum Capital Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	24 contacts →
	Exact match “Nonantum Capital Partners is a private equity firm led by a group of experienced private equity and management executives, formed in 2018 as a spin-out from Charlesbank Capital…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Atreides Management, LP	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	24 contacts →
	Exact match “Atreides Management, LP is a Boston-based investment manager focused on technology and consumer sectors, managing assets across a range of strategies that invest primarily in…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	BPEA	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	11-50	23 contacts →
	Exact match “Private equity firm located in Boston, MA.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “co-investment firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 148 co-investment firms based in Boston, United States

See the full list, filter by size, metro and specialty, and access 3,827 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Co-investment firms based in Boston, United States at a glance

As of Sep 27, 2026

58.2%Verified-email coverage

44.5Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

103

11-50

51-200

201-500

501-1,000

1,001-5,000

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 148 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Boston, United States whose business descriptions match “co-investment firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,827 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Co-investment firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “co-investment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 148 company matches for co-investment firms associated with Boston, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Bain Capital tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

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

New York leads the United States with 984 company records, followed by San Francisco (268) and Chicago (250). Boston has 148.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,827 professional contacts with verified work emails tracked across these 148 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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 SmartSearch, 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.