Company lists · Data refreshed September 2026

Top 25 Private investment firms based in the United States

Name: Private investment firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 1,341 companies tracked

RevenueBase identified 1,341 private investment firms headquartered in the United States as of September 2026 and tracks 40,511 professional contacts across them, including 16,999 with verified work emails. New York is the largest hub.

This list covers private investment firms headquartered in the 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026.

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 14, 2026 86% judged on-target in blind review

1,341Companies

40,511Contacts tracked

16,999Verified emails

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The 25 largest private investment firms based in the United States

Ranked by team size

Top 25 of 1,341 private investment firms based in the United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to private investment 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	Brookfield	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,915 contacts →
	Partial evidence “We are a leading global investment firm that invests as long-term owners on behalf of institutions and individuals worldwide.” Source: RevenueBase Database · checked Sep 14, 2026
2	The Carlyle Group	Strong evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,515 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026
3	Bain Capital	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,068 contacts →
	Strong evidence “Founded in 1984, Bain Capital is one of the world’s leading private investment firms.” Source: RevenueBase Database · checked Sep 14, 2026
4	H.I.G. Capital	Indirect evidence	Miami, FL, United StatesHQ checked Sep 14, 2026	501-1,000	1,301 contacts →
	Indirect evidence “H.I.G.” Source: RevenueBase Database · checked Sep 14, 2026
5	Warburg Pincus LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	1,290 contacts →
	Indirect evidence “Warburg Pincus LLC is the pioneer of global growth investing.” Source: RevenueBase Database · checked Sep 14, 2026
6	TA Associates	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	881 contacts →
	Partial evidence “TA is a leading global private equity firm focused on scaling growth in profitable companies.” Source: RevenueBase Database · checked Sep 14, 2026
7	Vista Equity Partners	Indirect evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	501-1,000	839 contacts →
	Indirect evidence “Vista Equity Partners (Vista) is a leading global technology investor specializing in software.” Source: RevenueBase Database · checked Sep 14, 2026
8	Sixth Street	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	501-1,000	802 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026
9	Summit Partners	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	465 contacts →
	Partial evidence “Summit Partners is a global alternative investment firm with capital dedicated to growth equity, fixed income, and public equity opportunities.” Source: RevenueBase Database · checked Sep 14, 2026
10	Sequoia Capital	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 14, 2026	51-200	388 contacts →
	Indirect evidence “Sequoia helps daring founders build legendary companies from idea to IPO and beyond.” Source: RevenueBase Database · checked Sep 14, 2026
11	Centerbridge Partners, L.P	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	368 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026
12	Adams Street Partners	Strong evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	201-500	367 contacts →
	Strong evidence “Adams Street Partners is a global investment firm managing a comprehensive suite of private markets investment solutions.” Source: RevenueBase Database · checked Sep 14, 2026
13	W Capital Partners	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 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 14, 2026
14	Lightspeed	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 14, 2026	51-200	329 contacts →
	Indirect evidence “Lightspeed is a global, multi-stage, venture capital firm managing over $40B in assets.” Source: RevenueBase Database · checked Sep 14, 2026
15	AMG	Partial evidence	West Palm Beach, FL, United StatesHQ checked Sep 14, 2026	201-500	297 contacts →
	Partial evidence “AMG is a leading partner to independent investment management firms globally.” Source: RevenueBase Database · checked Sep 14, 2026
16	NEW Enterprise Associates NEA	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 14, 2026	51-200	277 contacts →
	Indirect evidence “New Enterprise Associates, Inc.(NEA) is a global venture capital firm focused on helping entrepreneurs build transformational businesses across multiple stages, sectors and…” Source: RevenueBase Database · checked Sep 14, 2026
17	Clearlake Capital Group	Indirect evidence	Santa Monica, CA, United StatesHQ checked Sep 14, 2026	51-200	266 contacts →
	Indirect evidence “Clearlake Capital is a leading global alternative asset manager founded in 2006 with over $185 billion of assets under management.” Source: RevenueBase Database · checked Sep 14, 2026
18	Fundrise	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	201-500	254 contacts →
	Partial evidence “For almost a century, regulatory barriers made it difficult for individuals to invest in private markets, giving billion-dollar institutions preferred access.” Source: RevenueBase Database · checked Sep 14, 2026
19	Pathway Capital Management	Partial evidence	Irvine, CA, United StatesHQ checked Sep 14, 2026	201-500	252 contacts →
	Partial evidence “Pathway is a leading private market solutions provider with over $95 billion in assets under management from private equity, private credit, and infrastructure mandates.” Source: RevenueBase Database · checked Sep 14, 2026
20	Charlesbank Capital Partners	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	236 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 14, 2026
21	Carlyle Alpinvest	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	227 contacts →
	Partial evidence “Carlyle AlpInvest is a leading global private equity investor with $107 billion of assets under management as of March 31, 2026, and employs more than 260 people in New York…” Source: RevenueBase Database · checked Sep 14, 2026
22	Sands Capital	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 14, 2026	201-500	223 contacts →
	Indirect evidence “Sands Capital is an active, long-term investor in leading innovative growth businesses, globally.” Source: RevenueBase Database · checked Sep 14, 2026
23	American Securities	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	220 contacts →
	Indirect evidence “Founded in 1994, American Securities is a leading U.S.” Source: RevenueBase Database · checked Sep 14, 2026
24	Norwest	Partial evidence	Menlo Park, CA, United StatesHQ checked Sep 14, 2026	51-200	212 contacts →
	Partial evidence “Norwest is a leading venture and growth equity investment firm that works side-by-side with the world’s top entrepreneurs, empowering them throughout their personal journey of…” Source: RevenueBase Database · checked Sep 14, 2026
25	Harbert Management Corporation	Partial evidence	Birmingham, AL, United StatesHQ checked Sep 14, 2026	51-200	180 contacts →
	Partial evidence “Harbert Management Corporation (“HMC”) is an investment management firm focusing on alternative assets, with approximately $7.8 billion in Regulatory Assets Under Management as of…” Source: RevenueBase Database · checked Sep 14, 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: private investment 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 private investment firms.
Partial evidence: Its own public description names part of private investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name private investment 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 1,341 private investment firms based in the United States

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Private investment firms based in the United States at a glance

As of Sep 14, 2026

42.0%Verified-email coverage

30.2Average contacts per company

1-10Median size (employees)

17.8%Largest-city concentration · New York

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

837

11-50

370

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,341 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 private investment 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “private investment 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 private investment 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 private investment firms, and records with no verified work email. Companies headquartered outside United States 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 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, 16,999 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 14, 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.

Private investment firms by metro

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 private investment 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 private investment firms are there based in the United States?

RevenueBase identified 1,341 private investment firms headquartered in the 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 private investment firms?

New York leads with 239 headquartered companies, followed by San Francisco (62) and Chicago (61).

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 16,999 verified decision-maker contacts tracked across these 1,341 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 14, 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.