Company lists · Data refreshed September 2026

Top 25 Private investment firms based in the United States

RevenueBase identified 1,341 company matches for private investment firms associated with 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 company matches for private investment firms associated with the 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 14, 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 14, 2026 How this list was built
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 company matches for private investment firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 14, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNew York, NY, United StatesHQ recorded Sep 14, 20261,001-5,0003,915 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 14, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Sep 14, 20261,001-5,0002,515 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 14, 2026 · View company records in RevenueBase
3Exact matchBoston, MA, United StatesHQ recorded Sep 14, 20261,001-5,0002,068 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 14, 2026 · View company records in RevenueBase
4Exact matchMiami, FL, United StatesHQ recorded Sep 14, 2026501-1,0001,301 contacts →

Exact match

“H.I.G.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
5Exact matchNew York, NY, United StatesHQ recorded Sep 14, 2026501-1,0001,290 contacts →

Exact match

“Warburg Pincus LLC is the pioneer of global growth investing.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
6Exact matchBoston, MA, United StatesHQ recorded Sep 14, 2026201-500881 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 14, 2026 · View company records in RevenueBase
7Exact matchAustin, TX, United StatesHQ recorded Sep 14, 2026501-1,000839 contacts →

Exact match

“Vista Equity Partners (Vista) is a leading global technology investor specializing in software.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
8Exact matchSan Francisco, CA, United StatesHQ recorded Sep 14, 2026501-1,000802 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 14, 2026 · View company records in RevenueBase
9Exact matchBoston, MA, United StatesHQ recorded Sep 14, 202651-200465 contacts →

Exact match

“Summit Partners is a global alternative investment firm with capital dedicated to growth equity, fixed income, and public equity opportunities.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
10Exact matchMenlo Park, CA, United StatesHQ recorded Sep 14, 202651-200388 contacts →

Exact match

“Sequoia helps daring founders build legendary companies from idea to IPO and beyond.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Sep 14, 2026201-500368 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
12Exact matchChicago, IL, United StatesHQ recorded Sep 14, 2026201-500367 contacts →

Exact match

“Adams Street Partners is a global investment firm managing a comprehensive suite of private markets investment solutions.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
13Exact matchNew York, NY, United StatesHQ recorded Sep 14, 2026n/a337 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 14, 2026 · View company records in RevenueBase
14Exact matchMenlo Park, CA, United StatesHQ recorded Sep 14, 202651-200329 contacts →

Exact match

“Lightspeed is a global, multi-stage, venture capital firm managing over $40B in assets.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
15Exact matchWest Palm Beach, FL, United StatesHQ recorded Sep 14, 2026201-500297 contacts →

Exact match

“AMG is a leading partner to independent investment management firms globally.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
16Exact matchMenlo Park, CA, United StatesHQ recorded Sep 14, 202651-200277 contacts →

Exact match

“New Enterprise Associates, Inc.(NEA) is a global venture capital firm focused on helping entrepreneurs build transformational businesses across multiple stages, sectors and…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
17Exact matchSanta Monica, CA, United StatesHQ recorded Sep 14, 202651-200266 contacts →

Exact match

“Clearlake Capital is a leading global alternative asset manager founded in 2006 with over $185 billion of assets under management.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
18Exact matchWashington, DC, United StatesHQ recorded Sep 14, 2026201-500254 contacts →

Exact match

“For almost a century, regulatory barriers made it difficult for individuals to invest in private markets, giving billion-dollar institutions preferred access.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
19Exact matchIrvine, CA, United StatesHQ recorded Sep 14, 2026201-500252 contacts →

Exact match

“Pathway is a leading private market solutions provider with over $95 billion in assets under management from private equity, private credit, and infrastructure mandates.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
20Exact matchBoston, MA, United StatesHQ recorded Sep 14, 202651-200236 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Sep 14, 2026201-500227 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
22Exact matchArlington, VA, United StatesHQ recorded Sep 14, 2026201-500223 contacts →

Exact match

“Sands Capital is an active, long-term investor in leading innovative growth businesses, globally.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
23Exact matchNew York, NY, United StatesHQ recorded Sep 14, 202651-200220 contacts →

Exact match

“Founded in 1994, American Securities is a leading U.S.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
24Exact matchMenlo Park, CA, United StatesHQ recorded Sep 14, 202651-200212 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
25Exact matchBirmingham, AL, United StatesHQ recorded Sep 14, 202651-200180 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase

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)
18.5%Largest-city concentration · New York
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
837
11-50
370
51-200
89
201-500
18
501-1,000
12
1,001-5,000
10
5,001-10,000
1
10001+
2

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

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 the United States whose business descriptions match “private investment 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 16,999 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 14, 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.

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 “private investment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 1,341 company matches for private investment firms associated with the 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 has the most private investment firms?

New York leads with 248 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 16,999 professional contacts with verified work emails tracked across these 1,341 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 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 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.