Company lists · Data refreshed September 2026

Top 25 Upper middle market private equity firms based in New York, United States

Name: Upper middle market private equity firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 988 companies tracked

RevenueBase identified 988 company matches for upper middle market private equity firms associated with New York, United States as of September 2026 and tracks 35,769 professional contacts across them, including 14,767 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers company matches for upper middle market private equity firms associated with New York, 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 21, 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 21, 2026 How this list was built

988Companies

35,769Contacts tracked

14,767Verified emails

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The 25 largest upper middle market private equity firms based in New York, United States

Ranked by team size

Top 25 of 988 company matches for upper middle market private equity firms based in New York, United States, 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	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
2	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
3	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
4	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
5	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
6	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
7	The Riverside Company	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	447 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Cd&r	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	385 contacts →
	Exact match “Founded in 1978, CD & R is an investment firm with an investment strategy predicated on building stronger, more profitable businesses.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Centerbridge Partners, L.P	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	368 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	NEW Mountain Capital	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	346 contacts →
	Exact match “New Mountain Capital (“New Mountain”) is an alternative investment manager with private equity, credit and net lease strategies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	W Capital Partners	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	n/a	337 contacts →
	Exact match “W Capital Partners is a private equity firm that provides secondary liquidity to shareholders in private businesses and growth capital for those companies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Churchill Asset Management	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	260 contacts →
	Exact match “Churchill, an investment-specialist affiliate of Nuveen (the asset manager of TIAA), provides customized financing solutions to U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Needham & Company	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	250 contacts →
	Exact match “Needham & Company, LLC is a nationally recognized investment banking and asset management Firm focused solely on growth companies and their investors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Muzinich & CO	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	243 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Coatue Management	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	239 contacts →
	Exact match “Building on our heritage in public markets investing, Coatue’s lifecycle investment platform has expanded across public and private markets over the past 25+ years.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Baron Capital	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	237 contacts →
	Exact match “Baron Capital is an asset management firm focused on delivering growth equity investment solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Apogem Capital	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	229 contacts →
	Exact match “Apogem Capital is a leading alternatives investment manager with decades of experience investing in the middle market.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	American Securities	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	220 contacts →
	Exact match “Founded in 1994, American Securities is a leading U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Avenue Capital Group	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	218 contacts →
	Exact match “Avenue Capital Group, founded in 1995 by Marc Lasry and Sonia Gardner, is primarily focused on making opportunistic credit and other special situations investments across the…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	AEA Investors	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	207 contacts →
	Exact match “AEA Investors is a leading global alternative investment firm that has partnered with exceptional middle-market businesses for over 55 years.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Star Mountain Capital	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	172 contacts →
	Exact match “Bringing large market expertise to smaller companies, Star Mountain’s philosophies include a data-driven and systematic approach to investing.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Siguler Guff & Company	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	165 contacts →
	Exact match “Siguler Guff is a multi-strategy private markets investment firm which, together with its affiliates, has approximately $18.4 billion of assets under management as of December 31…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Stripes	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	160 contacts →
	Exact match “Based in New York City, Stripes is a leading growth equity firm that invests in branded consumer and enterprise companies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Searchlight Capital Partners	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	150 contacts →
	Exact match “Searchlight Capital Partners is a private investment firm that identifies and develops distinctive opportunities for its investors and partner companies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Arsenal Capital Partners	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	142 contacts →
	Exact match “Arsenal is a leading private equity firm that specializes in investments in middle-market industrial growth and healthcare companies.” 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 988 upper middle market private equity firms based in New York, United States

See the full list, filter by size, metro and specialty, and access 14,767 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Upper middle market private equity firms based in New York, United States at a glance

As of Sep 21, 2026

41.3%Verified-email coverage

36.2Average contacts per company

1-10Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

546

11-50

343

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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

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 New York, United States 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. 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 14,767 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 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 “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 based in New York, United States?

RevenueBase identified 988 company matches for upper middle market private equity firms associated with New York, 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?

Brookfield 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 upper middle market private equity firms?

New York leads the United States with 988 company records, followed by Chicago (333) and Dallas (294).

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 14,767 professional contacts with verified work emails tracked across these 988 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.