Company lists · Data refreshed September 2026

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

Name: Middle market private equity firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 60 companies tracked

RevenueBase identified 60 middle market private equity firms headquartered in Washington, United States as of September 2026 and tracks 3,504 professional contacts across them, including 1,862 with verified work emails. New York is the largest hub.

This list covers middle market private equity firms headquartered in Washington, 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

60Companies

3,504Contacts tracked

1,862Verified emails

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

Ranked by team size

Top 25 of 60 middle market private equity firms based in Washington, 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	The Carlyle GroupStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,515
	“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: company website · checked Sep 5, 2026
2	JMI EquityPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	152
	“Founded in 1992, JMI Equity has focused on investing in exceptional software and AI-driven companies from scaling stages through later growth.” Source: company website · checked Sep 5, 2026
3	Acon Investments, L.L.CStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	91
	“ACON Investments is a private equity investment firm led by a cohesive team that has been investing together for over 25 years.” Source: company website · checked Sep 5, 2026
4	Dark Alpha Capital LLCPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	n/a	90
	“Dark Alpha Capital is an investment firm focused on acquiring private companies.” Source: company website · checked Sep 5, 2026
5	Anzu PartnersStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	63
	“Anzu Partners is a venture capital and private equity firm that invests in breakthrough industrial technologies.” Source: company website · checked Sep 5, 2026
6	Halifax GroupStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	49
	“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…” Source: company website · checked Sep 5, 2026
7	Arlington Capital PartnersPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	42
	“Arlington Capital Partners is a Washington, D.C-area private investment firm specializing in government regulated industries.” Source: company website · checked Sep 5, 2026
8	Updata PartnersPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	33
	“Updata Partners is a leading technology-focused growth equity firm in Washington D.C.” Source: company website · checked Sep 5, 2026
9	HCI Equity PartnersPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	31
	“HCI Equity Partners is now Oridian Capital Partners.” Source: company website · checked Sep 5, 2026
10	ABS CapitalPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	22
	“ABS Capital provides growth equity capital to B2B software and tech-enabled services businesses with strong technology and data underpinnings looking to scale with the right…” Source: company website · checked Sep 5, 2026
11	Capitol Meridian PartnersPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	21
	“CAPITOL MERIDIAN PARTNERS (“CMP”) is a private investment firm founded in 2021 by seasoned investors Adam Palmer and Brooke Coburn.” Source: company website · checked Sep 5, 2026
12	Questa CapitalPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	17
	“Questa Capital is a venture growth equity firm focused on later-stage investing in the healthcare services, healthcare technology, and medical device sectors.” Source: company website · checked Sep 5, 2026
13	Juggernaut Capital PartnersStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	17
	“Juggernaut Capital Partners is a lower middle market private equity firm specializing in buyout and growth investments across the consumer and healthcare sectors.” Source: company website · checked Sep 5, 2026
14	DHS Ventures & HoldingsIndirect evidence	Washington, United StatesHQ checked Sep 5, 2026	201-500	17
	“We purposefully engage only in friendly transactions and work with talented management teams to achieve transformative results.” Source: company website · checked Sep 5, 2026
15	Godspeed Capital ManagementStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	16
	“Godspeed Capital is a lower middle-market Defense & Government services, solutions, and technology focused private equity firm investing alongside forward-thinking management…” Source: company website · checked Sep 5, 2026
16	Temerity Capital PartnersPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	15
	“Temerity Capital Partners is a private investment company managed on behalf of its founder, his family interests, and eligible employees.” Source: company website · checked Sep 5, 2026
17	Avenue Growth PartnersPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	14
	“Avenue is an early growth equity firm.” Source: company website · checked Sep 5, 2026
18	Swan & Legend Venture PartnersIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	14
	“SWaN & Legend Venture Partners focuses primarily on companies that are building engaging brands, central to consumers’ lives, across a number of industries, as well as the B2B…” Source: company website · checked Sep 5, 2026
19	Spaulding & Slye InvestmentsIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	13
	“A specialized investment group dedicated to providing high-yield returns through custom-tailored capital solutions.” Source: company website · checked Sep 5, 2026
20	Springharbor Financial Group LLCPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	13
	“SpringHarbor is a private investment firm based in Washington, DC founded by former Comptroller of the Currency, Eugene Ludwig.” Source: company website · checked Sep 5, 2026
21	Astra Capital ManagementIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	12
	“Astra specializes in growth buyouts in the Communications and Technology Services industries.” Source: company website · checked Sep 5, 2026
22	Woodson EquityIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	12
	“Thesis Minded Investors.” Source: company website · checked Sep 5, 2026
23	United Western Group UWGStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	11
	“United Western Group is a private equity firm based in Washington, D.C.” Source: company website · checked Sep 5, 2026
24	Multiplier CapitalIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	10
	“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…” Source: company website · checked Sep 5, 2026
25	Farragut Capital PartnersStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	8
	“Farragut Capital Partners is a privately-held investment management firm providing private capital (usually senior sub debt and/or preferred equity) to finance outstanding…” Source: company website · checked Sep 5, 2026

Showing 25 of 60 middle market private equity firms based in Washington, United States

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Middle market private equity firms based in Washington, 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

11-50

51-200

201-500

1,001-5,000

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 Washington, over 60 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 Washington, 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 Washington 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, 1,862 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 Washington, United States?

RevenueBase identified 60 middle market private equity firms headquartered in Washington, 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?

The Carlyle Group, headquartered in Washington, 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 1,862 verified decision-maker contacts tracked across these 60 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.