Company lists · Data refreshed September 2026

Top 25 Upper middle market private equity firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 14,609 companies tracked

RevenueBase identified 14,609 company matches for upper middle market private equity firms worldwide as of September 2026 and tracks 194,686 professional contacts across them, including 85,066 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for upper middle market private equity firms worldwide, 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 21, 2026. Country and city lists for upper middle market private equity firms follow the table.

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 21, 2026 How this list was built

14,609Companies

194,686Contacts tracked

85,066Verified emails

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The 25 largest upper middle market private equity firms worldwide

Ranked by team size

Top 25 of 14,609 company matches for upper middle market private equity firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Ares Management	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,975 contacts →
	Exact match “Ares Management Corporation (NYSE: ARES) is a leading global alternative investment manager offering clients complementary primary and secondary investment solutions across the…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Brookfield	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,915 contacts →
	Exact match “We are a leading global investment firm that invests as long-term owners on behalf of institutions and individuals worldwide.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Nuveen, A Tiaa Company	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,940 contacts →
	Exact match “Nuveen is a global investment leader, managing public and private assets for clients around the world and on behalf of TIAA, our parent company and one of the world’s largest…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	The Carlyle Group	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,515 contacts →
	Exact match “Carlyle (NASDAQ: CG) is a global investment firm with deep industry expertise that deploys private capital across three business segments: Global Private Equity, Global Credit…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Partners Group	Exact match	Baar, SwitzerlandHQ recorded Sep 21, 2026	1,001-5,000	2,149 contacts →
	Exact match “Partners Group is a global private markets firm with USD 186 billion in assets under management and c.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Bain Capital	Exact match	Boston, MA, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
7	TPG	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,979 contacts →
	Exact match “TPG (Nasdaq: TPG) is a leading global alternative asset management firm, founded in San Francisco in 1992, with $306 billion of assets under management and investment and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Algihaz Holding	Exact match	Riyadh, Saudi ArabiaHQ recorded Sep 21, 2026	10001+	1,740 contacts →
	Exact match “Algihaz Holding is a Saudi Arabian investment group that has emerged as a leading organization since 1975.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Ardian	Exact match	Paris, FranceHQ recorded Sep 21, 2026	1,001-5,000	1,624 contacts →
	Exact match “In a world of constant evolution, Ardian stands out for its ability to anticipate, adapt, and turn challenges into opportunities.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Harbourvest Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
11	H.I.G. Capital	Exact match	Miami, FL, United StatesHQ recorded Sep 21, 2026	501-1,000	1,301 contacts →
	Exact match “H.I.G.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Warburg Pincus LLC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	1,290 contacts →
	Exact match “Warburg Pincus LLC is the pioneer of global growth investing.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Golub Capital	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,126 contacts →
	Exact match “Golub Capital is a market-leading, award-winning direct lender and experienced private credit manager.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Advent	Exact match	Boston, MA, United StatesHQ recorded Sep 21, 2026	501-1,000	1,025 contacts →
	Exact match “Advent is a leading global private equity investor committed to working in partnership with management teams, entrepreneurs, and founders to help transform businesses.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Itautec	Exact match	São Paulo, BrazilHQ recorded Sep 21, 2026	1,001-5,000	998 contacts →
	Exact match “A Itautec faz parte do Grupo Itaúsa - Investimentos Itaú S.A.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	TA Associates	Exact match	Boston, MA, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
17	Vista Equity Partners	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	839 contacts →
	Exact match “Vista Equity Partners (Vista) is a leading global technology investor specializing in software.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	General Atlantic	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	820 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Sixth Street	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	802 contacts →
	Exact match “Sixth Street is a global investment firm with over $135 billion in assets under management and committed capital.* The firm uses its long-term flexible capital, data-enabled…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	ICG	Exact match	London, United KingdomHQ recorded Sep 21, 2026	501-1,000	797 contacts →
	Exact match “ICG (LSE: ICG) is a global alternative asset manager with $126bn* in AUM and more than three decades of experience generating attractive returns.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	ALGER	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	n/a	722 contacts →
	Exact match “Founded in 1964, Alger is recognized as a pioneer of growth-style investment management.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Starwood Capital Group	Exact match	United StatesHQ recorded Sep 21, 2026	1,001-5,000	710 contacts →
	Exact match “Starwood Capital Group is a private investment firm with a primary focus on global real estate.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Alantra	Exact match	Madrid, GermanyHQ recorded Sep 21, 2026	501-1,000	697 contacts →
	Exact match “Alantra is an independent global financial services firm that provides investment banking and asset management services to mid-market companies, families, and investors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	JV Driver Investments	Exact match	Leduc, AB, CanadaHQ recorded Sep 21, 2026	501-1,000	642 contacts →
	Exact match “JV Driver Investments Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Permira	Exact match	London, United KingdomHQ recorded Sep 21, 2026	501-1,000	629 contacts →
	Exact match “Permira is a global investment firm that backs successful businesses with growth ambitions.” Recorded in the RevenueBase company graph · Sep 21, 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 “upper middle market private equity 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 14,609 upper middle market private equity firms worldwide

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Upper middle market private equity firms worldwide at a glance

As of Sep 21, 2026

43.7%Verified-email coverage

13.3Average contacts per company

1-10Median size (employees)

6.6%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

9,591

11-50

3,730

51-200

831

201-500

225

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

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.
Coverage: Every country. Country and city lists for upper middle market private equity firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “upper middle market private equity 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. 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 85,066 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 21, 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.

Upper middle market private equity firms by location

77 lists · largest first

Every Upper middle market private 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 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 “upper middle market private equity firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many upper middle market private equity firms are there worldwide?

RevenueBase identified 14,609 company matches for upper middle market private equity firms worldwide 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?

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

Which country has the most upper middle market private equity firms?

The United States leads with 6,670 companies, followed by the United Kingdom (820) and Canada (633). Every upper middle market private equity firms list by country and city is linked on this page.

Which city has the most upper middle market private equity firms?

New York leads with 958 company records, followed by London (591) and Chicago (333).

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 85,066 professional contacts with verified work emails tracked across these 14,609 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 21, 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.