Company lists · Data refreshed September 2026

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

Name: 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 5, 2026 945 companies tracked

RevenueBase identified 945 middle market private equity firms headquartered in New York, United States as of September 2026 and tracks 34,984 professional contacts across them, including 14,422 with verified work emails. New York is the largest hub.

This list covers middle market private equity firms headquartered in New York, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

945Companies

34,984Contacts tracked

14,422Verified emails

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

Ranked by team size

Top 25 of 945 middle market private equity firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names middle market private equity firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	BrookfieldIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	3,915
	“We are a leading global investment firm that invests as long-term owners on behalf of institutions and individuals worldwide.” Source: company website · checked Sep 5, 2026
2	Nuveen, A Tiaa CompanyPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,940
	“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…” Source: company website · checked Sep 5, 2026
3	Warburg Pincus LLCIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	1,290
	“Warburg Pincus LLC is the pioneer of global growth investing.” Source: company website · checked Sep 5, 2026
4	Golub CapitalStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,126
	“Golub Capital is a market-leading, award-winning direct lender and experienced private credit manager.” Source: company website · checked Sep 5, 2026
5	General AtlanticIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	820
	“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: company website · checked Sep 5, 2026
6	ALGERIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	n/a	722
	“Founded in 1964, Alger is recognized as a pioneer of growth-style investment management.” Source: company website · checked Sep 5, 2026
7	Cd&rIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	385
	“Founded in 1978, CD & R is an investment firm with an investment strategy predicated on building stronger, more profitable businesses.” Source: company website · checked Sep 5, 2026
8	Centerbridge Partners, L.PIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	368
	Source: company website · checked Sep 5, 2026
9	NEW Mountain CapitalStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	346
	“New Mountain Capital (“New Mountain”) is an alternative investment manager with private equity, credit and net lease strategies.” Source: company website · checked Sep 5, 2026
10	W Capital PartnersStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	n/a	337
	“W Capital Partners is a private equity firm that provides secondary liquidity to shareholders in private businesses and growth capital for those companies.” Source: company website · checked Sep 5, 2026
11	Churchill Asset ManagementIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	260
	“Churchill, an investment-specialist affiliate of Nuveen (the asset manager of TIAA), provides customized financing solutions to U.S.” Source: company website · checked Sep 5, 2026
12	Needham & CompanyIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	250
	“Needham & Company, LLC is a nationally recognized investment banking and asset management Firm focused solely on growth companies and their investors.” Source: company website · checked Sep 5, 2026
13	Muzinich & COIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	243
	Source: company website · checked Sep 5, 2026
14	Coatue ManagementStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	239
	“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.” Source: company website · checked Sep 5, 2026
15	Baron CapitalPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	237
	“Baron Capital is an asset management firm focused on delivering growth equity investment solutions.” Source: company website · checked Sep 5, 2026
16	Apogem CapitalStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	229
	“Apogem Capital is a leading alternatives investment manager with decades of experience investing in the middle market.” Source: company website · checked Sep 5, 2026
17	American SecuritiesIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	220
	“Founded in 1994, American Securities is a leading U.S.” Source: company website · checked Sep 5, 2026
18	Avenue Capital GroupIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	218
	“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…” Source: company website · checked Sep 5, 2026
19	AEA InvestorsStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	207
	“AEA Investors is a leading global alternative investment firm that has partnered with exceptional middle-market businesses for over 55 years.” Source: company website · checked Sep 5, 2026
20	Star Mountain CapitalPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	172
	“Bringing large market expertise to smaller companies, Star Mountain’s philosophies include a data-driven and systematic approach to investing.” Source: company website · checked Sep 5, 2026
21	Siguler Guff & CompanyStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	165
	“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…” Source: company website · checked Sep 5, 2026
22	StripesPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	160
	“Based in New York City, Stripes is a leading growth equity firm that invests in branded consumer and enterprise companies.” Source: company website · checked Sep 5, 2026
23	Searchlight Capital PartnersPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	150
	“Searchlight Capital Partners is a private investment firm that identifies and develops distinctive opportunities for its investors and partner companies.” Source: company website · checked Sep 5, 2026
24	Arsenal Capital PartnersStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	142
	“Arsenal is a leading private equity firm that specializes in investments in middle-market industrial growth and healthcare companies.” Source: company website · checked Sep 5, 2026
25	Bregal SagemountPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	142
	“Bregal Sagemount is a growth-focused private capital firm with over $11 billion in committed capital.” Source: company website · checked Sep 5, 2026

Showing 25 of 945 middle market private equity firms based in New York, United States

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

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 945 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

519

11-50

330

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 this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 945 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 middle market private equity firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in New York, United States whose own description of what they do matches “middle market private equity firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among middle market private equity firms, and records with no verified work email. Companies headquartered outside New York 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 an evidence 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, 14,422 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 5, 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.

Middle market private equity firms by metro in the United States

Frequently asked

How many middle market private equity firms are there based in New York, United States?

RevenueBase identified 945 middle market private equity firms headquartered in New York, 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?

Brookfield, headquartered in New York, tops this list with the largest team on record.

Which city has the most middle market private equity firms?

New York leads with 945 headquartered companies, followed by Chicago (319) and Dallas (285).

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 14,422 verified decision-maker contacts tracked across these 945 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 5, 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.