Company lists · Data refreshed September 2026

Top 25 Lower middle market equity firms worldwide

Name: Lower middle market equity firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 8,278 companies tracked

RevenueBase identified 8,278 lower middle market equity firms worldwide as of September 2026 and tracks 80,482 professional contacts across them, including 34,672 with verified work emails. The United States is the largest market and London the largest hub.

This list covers lower middle market equity firms worldwide, 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 20, 2026. Country and city lists for lower middle market equity firms follow the table.

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 20, 2026 86% judged on-target in blind review

8,278Companies

80,482Contacts tracked

34,672Verified emails

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The 25 largest lower middle market equity firms worldwide

Ranked by team size

Top 25 of 8,278 lower middle market equity firms worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to lower middle market equity 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	Bain Capital	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,068 contacts →
	Indirect evidence “Founded in 1984, Bain Capital is one of the world’s leading private investment firms.” Source: RevenueBase Database · checked Sep 20, 2026
2	H.I.G. Capital	Indirect evidence	Miami, FL, United StatesHQ checked Sep 20, 2026	501-1,000	1,301 contacts →
	Indirect evidence “H.I.G.” Source: RevenueBase Database · checked Sep 20, 2026
3	Warburg Pincus LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	501-1,000	1,290 contacts →
	Indirect evidence “Warburg Pincus LLC is the pioneer of global growth investing.” Source: RevenueBase Database · checked Sep 20, 2026
4	General Atlantic	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	501-1,000	820 contacts →
	Indirect evidence “General Atlantic is a leading global investor with more than four and a half decades of experience providing capital and strategic support to over 830 companies throughout its…” Source: RevenueBase Database · checked Sep 20, 2026
5	JV Driver Investments	Indirect evidence	Leduc, AB, CanadaHQ checked Sep 20, 2026	501-1,000	642 contacts →
	Indirect evidence “JV Driver Investments Inc.” Source: RevenueBase Database · checked Sep 20, 2026
6	Eurazeo	Indirect evidence	Paris, GermanyHQ checked Sep 20, 2026	201-500	624 contacts →
	Indirect evidence “Eurazeo is a leading global investment company, with a diversified portfolio of €40 billion in assets under management, including €31 billion from third parties, invested in 600…” Source: RevenueBase Database · checked Sep 20, 2026
7	Bridgepoint Group	Strong evidence	West End, United KingdomHQ checked Sep 20, 2026	201-500	553 contacts →
	Strong evidence “Bridgepoint Group is one of the world's leading mid-market investors, specialising in private equity, infrastructure, credit, secondaries and private wealth.” Source: RevenueBase Database · checked Sep 20, 2026
8	LDC	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	536 contacts →
	Indirect evidence “For over 40 years, LDC has been the trusted investment partner for ambitious management teams.” Source: RevenueBase Database · checked Sep 20, 2026
9	PSG	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	51-200	513 contacts →
	Partial evidence “PSG is a growth equity firm that partners with software and technology-enabled services companies to help them navigate transformational growth, capitalize on strategic…” Source: RevenueBase Database · checked Sep 20, 2026
10	BDT & MSD Partners	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	504 contacts →
	Indirect evidence “BDT & MSD Partners is a merchant bank serving founders, family business owners, and long-term strategic investors.” Source: RevenueBase Database · checked Sep 20, 2026
11	The Riverside Company	Partial evidence	New York City, NY, United StatesHQ checked Sep 20, 2026	201-500	447 contacts →
	Partial evidence “The Riverside Company is a global investment firm focused on being one of the leading private capital options for business owners and employees at the smaller end of the middle…” Source: RevenueBase Database · checked Sep 20, 2026
12	APAX	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	438 contacts →
	Strong evidence “Apax Partners LLP ("Apax") is a global private equity advisory firm investing in mid-market businesses across the Technology, Services, and Internet/Consumer sectors.” Source: RevenueBase Database · checked Sep 20, 2026
13	BLOOM	Strong evidence	SingaporeHQ checked Sep 20, 2026	n/a	360 contacts →
	Strong evidence “bloom.CAPITAL is an operationally-focused private equity firm that invests in small to mid-market companies in the industrial sector.” Source: RevenueBase Database · checked Sep 20, 2026
14	3i Group PLC	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	337 contacts →
	Strong evidence “3i is a leading international investment company with two complementary businesses, Private Equity and Infrastructure, specialising in core investment markets in northern Europe…” Source: RevenueBase Database · checked Sep 20, 2026
15	W Capital Partners	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	n/a	337 contacts →
	Partial evidence “W Capital Partners is a private equity firm that provides secondary liquidity to shareholders in private businesses and growth capital for those companies.” Source: RevenueBase Database · checked Sep 20, 2026
16	Shore Capital Partners	Strong evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	327 contacts →
	Strong evidence “Shore Capital, a Chicago-based private equity firm with an office in Nashville, is an investor in lower-middle market companies in the Healthcare, Food and Beverage, Business…” Source: RevenueBase Database · checked Sep 20, 2026
17	Altamarcam Partners	Partial evidence	Madrid, SpainHQ checked Sep 20, 2026	201-500	314 contacts →
	Partial evidence “AltamarCAM is a leading investment manager in private markets whose main objective is to provide institutional investors, including insurance companies, pension funds and…” Source: RevenueBase Database · checked Sep 20, 2026
18	Epic Investment Partners	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	301 contacts →
	Indirect evidence “EPIC Investment Partners is an independent investment, administration and advisory firm.” Source: RevenueBase Database · checked Sep 20, 2026
19	AMG	Indirect evidence	West Palm Beach, FL, United StatesHQ checked Sep 20, 2026	201-500	297 contacts →
	Indirect evidence “AMG is a leading partner to independent investment management firms globally.” Source: RevenueBase Database · checked Sep 20, 2026
20	BGF	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	276 contacts →
	Indirect evidence “BGF is the most active and influential investor in small and mid-sized businesses in the UK.” Source: RevenueBase Database · checked Sep 20, 2026
21	IK Partners	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	273 contacts →
	Partial evidence “IK Partners (“IK”) is a European private equity firm focused on investments in the Benelux, DACH, France, Nordics and the UK.” Source: RevenueBase Database · checked Sep 20, 2026
22	Haywood Securities INC	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 20, 2026	201-500	268 contacts →
	Indirect evidence “Haywood Securities is an investment firm that values its independence and its entrepreneurial spirit.” Source: RevenueBase Database · checked Sep 20, 2026
23	Carlsquare	Indirect evidence	Hamburg, GermanyHQ checked Sep 20, 2026	51-200	255 contacts →
	Indirect evidence “Carlsquare is a partner-led investment bank that supports companies and their shareholders to implement their strategic goals.” Source: RevenueBase Database · checked Sep 20, 2026
24	Berkshire Partners	Strong evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	255 contacts →
	Strong evidence “Berkshire Partners is a 100% employee-owned, multi-sector specialist investor in private and public equity, with a focus on North American-based, middle-market companies.” Source: RevenueBase Database · checked Sep 20, 2026
25	Needham & Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	250 contacts →
	Indirect evidence “Needham & Company, LLC is a nationally recognized investment banking and asset management Firm focused solely on growth companies and their investors.” Source: RevenueBase Database · checked Sep 20, 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: lower middle market equity 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 lower middle market equity firms.
Partial evidence: Its own public description names part of lower middle market equity firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name lower middle market equity 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 8,278 lower middle market equity firms worldwide

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Lower middle market equity firms worldwide at a glance

As of Sep 20, 2026

43.1%Verified-email coverage

9.7Average contacts per company

1-10Median size (employees)

5.4%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

5,611

11-50

2,066

51-200

407

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 lower middle market equity 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.
Coverage: Every country. Country and city lists for lower middle market equity firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “lower middle market equity 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 lower middle market equity 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 lower middle market equity firms, and records with no verified work email.
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, 34,672 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 20, 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.

Lower middle market equity firms by location

62 lists · largest first

Every Lower middle market equity firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 lower middle market equity 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 lower middle market equity firms are there worldwide?

RevenueBase identified 8,278 lower middle market equity firms worldwide 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?

Bain Capital, headquartered in Boston, tops this list with the largest team on record.

Which country has the most lower middle market equity firms?

The United States leads with 2,805 companies, followed by the United Kingdom (669) and Germany (263). Every lower middle market equity firms list by country and city is linked on this page.

Which city has the most lower middle market equity firms?

London leads with 449 headquartered companies, followed by New York (410) and Chicago (169).

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 34,672 verified decision-maker contacts tracked across these 8,278 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 20, 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.