Company lists · Data refreshed September 2026

Top 25 Private investment companies based in Washington, United States

Name: Private investment companies based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 46 companies tracked

RevenueBase identified 46 company matches for private investment companies associated with Washington, United States as of September 2026 and tracks 3,147 professional contacts across them, including 1,721 with verified work emails. Across the United States, New York is the largest hub for this category (786 companies); Washington has 46.

This list covers company matches for private investment companies associated with Washington, 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 20, 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 20, 2026 How this list was built

46Companies

3,147Contacts tracked

1,721Verified emails

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The 25 largest private investment companies based in Washington, United States

Ranked by team size

Top 25 of 46 company matches for private investment companies based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	The Carlyle Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
2	JMI Equity	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	152 contacts →
	Exact match “Founded in 1992, JMI Equity has focused on investing in exceptional software and AI-driven companies from scaling stages through later growth.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Acon Investments, L.L.C	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	91 contacts →
	Exact match “ACON Investments is a private equity investment firm led by a cohesive team that has been investing together for over 25 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Dark Alpha Capital LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	n/a	90 contacts →
	Exact match “Dark Alpha Capital is an investment firm focused on acquiring private companies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Halifax Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	49 contacts →
	Exact match “Halifax Group is a private investment firm dedicated to partnering with founders and managers of lower middle-market businesses with total enterprise values generally between $50…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Updata Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	33 contacts →
	Exact match “Updata Partners is a leading technology-focused growth equity firm in Washington D.C.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	HCI Equity Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	31 contacts →
	Exact match “HCI Equity Partners is now Oridian Capital Partners.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Emerging Capital Partners - ECP	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	30 contacts →
	Exact match “Emerging Capital Partners (ECP) is one of the longest-established private equity fund managers focused on Africa.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Temerity Capital Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	15 contacts →
	Exact match “Temerity Capital Partners is a private investment company managed on behalf of its founder, his family interests, and eligible employees.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Springharbor Financial Group LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	13 contacts →
	Exact match “SpringHarbor is a private investment firm based in Washington, DC founded by former Comptroller of the Currency, Eugene Ludwig.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	United Western Group UWG	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	11 contacts →
	Exact match “United Western Group is a private equity firm based in Washington, D.C.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Multiplier Capital	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	10 contacts →
	Exact match “The Multiplier partners, as a team, have invested over $1.6 billion in capital across more than 165 transactions over the past 20+ years, applying 90 years in combined experience…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Farragut Capital Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	8 contacts →
	Exact match “Farragut Capital Partners is a privately-held investment management firm providing private capital (usually senior sub debt and/or preferred equity) to finance outstanding…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	PAN African Capital Group, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	7 contacts →
	Exact match “Pan African Capital Group, LLC is a private equity and investment banking firm focused exclusively on Sub-Saharan Africa.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Operating Partners Group INC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	5 contacts →
	Exact match “We work with entrepreneurs, private equity companies, and corporate clients to grow value the right way.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	TVD Capital Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	5 contacts →
	Exact match “Founded on a commitment to enduring long-term value creation, we actively engage with our companies post-acquisition and partner with top-tier management teams industry leaders…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Northwood Healthcare Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	4 contacts →
	Exact match “Northwood Healthcare Partners is a healthcare private investment firm focused on partnering with founders and business owners to build market leading healthcare services companies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Pencek Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	3 contacts →
	Exact match “Pencek Advisors partners with middle market private equity firms, portfolio companies, and founder-owned businesses to execute on strategic initiatives and create sustained value.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Capend	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	3 contacts →
	Exact match “Some of business' greatest ideas are threatened by a lack of planning, expectation management, or follow-through.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Cinnamon Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	3 contacts →
	Exact match “Cinnamon Advisors is an advisory firm is dedicated to engaging clients at any stage of a businesses lifecycle.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Serendipity Equity Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	2 contacts →
	Exact match “Serendipity Equity Group (SEG) operates at the intersection of capital and execution.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Slipstream Investors	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	2 contacts →
	Exact match “Investing in early-stage VC funds and their breakout portfolio companies” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Impel Capital	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “Impel Capital is a private capital firm providing custom credit and equity investment solutions to companies with Revenue between $10m and $100m.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Quoth Capital	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “At Quoth, we believe that true value creation transcends traditional financial metrics.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Green Hills Capital Partners LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “GHCP is a boutique merchant banking and advisory firm focused on Africa’s high-growth markets.” Recorded in the RevenueBase company graph · Sep 20, 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 “private investment companies”. 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 46 private investment companies based in Washington, United States

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Private investment companies based in Washington, United States at a glance

As of Sep 20, 2026

54.7%Verified-email coverage

68.4Average contacts per company

1-10Median size (employees)

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 46 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 Washington, United States whose business descriptions match “private investment companies” 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 1,721 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 20, 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.

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

How many private investment companies are there based in Washington, United States?

RevenueBase identified 46 company matches for private investment companies associated with Washington, 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?

The Carlyle Group 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 private investment companies?

New York leads the United States with 786 company records, followed by Chicago (222) and Los Angeles (173). Washington has 46.

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 1,721 professional contacts with verified work emails tracked across these 46 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 20, 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.