Company lists · Data refreshed September 2026

Top 25 Middle market companies based in the United States

RevenueBase identified 298 company matches for middle market companies associated with the United States as of September 2026 and tracks 2,723 professional contacts across them, including 1,175 with verified work emails. New York is the largest hub.

This list covers company matches for middle market companies 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 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
298Companies
2,723Contacts tracked
1,175Verified emails
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The 25 largest middle market companies based in the United States

Ranked by team size
Top 25 of 298 company matches for middle market companies based in the 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSyosset, NY, United StatesHQ recorded Sep 20, 202651-200504 contacts →

Exact match

“CEO Connection is the only membership organization in the world reserved exclusively for CEOs of Mid-Market companies with between $100 million and $3 billion in revenue.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202651-200138 contacts →

Exact match

“Founded in 1954, the Association for Corporate Growth (ACG) has 60 chapters worldwide, representing members.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchPittsburgh, PA, United StatesHQ recorded Sep 20, 202651-200125 contacts →

Exact match

“Incline Equity Partners is the driving force in middle market private equity.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202611-5099 contacts →

Exact match

“MGG Investment Group provides bespoke solutions to mid-size and growing companies throughout North America.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchBoca Raton, FL, United StatesHQ recorded Sep 20, 202651-20081 contacts →

Exact match

“Hidden Harbor Capital Partners is a private equity firm which helps create business success stories by building teams focused on execution.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202611-5049 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
7Exact matchMiami, FL, United StatesHQ recorded Sep 20, 202611-5044 contacts →

Exact match

“ICV is a private equity firm that invests in lower middle market companies in North America through its offices in Miami, FL and Atlanta, GA.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Sep 20, 202611-5042 contacts →

Exact match

“GulfStar is one of the leading middle market investment banking firms in the United States, with deep experience in mergers and acquisitions, private capital placement and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchDetroit, MI, United StatesHQ recorded Sep 20, 202611-5039 contacts →

Exact match

“Huron Capital is a leading lower middle-market private equity firm focused on partnering with outstanding management teams to build leading service companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchCharlotte, NC, United StatesHQ recorded Sep 20, 202611-5036 contacts →

Exact match

“Summit Park is a Charlotte, North Carolina-based private investment firm focused on investing in the lower middle market.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchGreenville, SC, United StatesHQ recorded Sep 20, 202611-5033 contacts →

Exact match

“Over the last 25 years, The Capital Corporation has established itself as one of the premier middle market investment banking firms in the country.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchSt. Louis, MO, United StatesHQ recorded Sep 20, 202611-5032 contacts →

Exact match

“Compass Group Equity Partners is a St.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchDraper, UT, United StatesHQ recorded Sep 20, 202611-5032 contacts →

Exact match

“Tower Arch Capital is a growth-oriented middle market private equity firm.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Sep 20, 20261-1029 contacts →

Exact match

“MTN is a private equity firm that focuses on acquiring middle-market companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchSouthlake, TX, United StatesHQ recorded Sep 20, 202611-5028 contacts →

Exact match

“Insight Equity, a value-focused, Dallas-based private equity firm, invests in strategically viable and differentiated lower middle-market companies in a variety of end markets…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchNew York, NY, United StatesHQ recorded Sep 20, 20261-1027 contacts →

Exact match

“Mizzen Capital primarily invests debt into U.S.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchStamford, CT, United StatesHQ recorded Sep 20, 20261-1026 contacts →

Exact match

“Gainline Capital Partners is a private equity firm that invests in U.S.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchNew York, United StatesHQ recorded Sep 20, 202611-5025 contacts →

Exact match

“Staple Street Capital is a private equity firm that invests in middle market businesses where we can partner with motivated and proven management teams to create value.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchBoston, MA, United StatesHQ recorded Sep 20, 202611-5023 contacts →

Exact match

“Fort Point Capital is a private equity firm focused on the lower middle market in the U.S.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchSt. Petersburg, FL, United StatesHQ recorded Sep 20, 202611-5023 contacts →

Exact match

“DONE DEAL"- Transworld M&A Advisors consists of a team of professionals who specialize in mid-market transactions for companies between $5 million and $100 million in revenue.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202611-5022 contacts →

Exact match

“Atlantic Street Capital is a private equity firm that invests in middle-market companies with between $3 million and $20 million of EBITDA.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“GreyLion (formerly known as PWP Growth Equity) focuses on investing in high-growth businesses in the lower middle market.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchGreenwich, CT, United StatesHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“Southfield Capital is a private equity firm that invests in exceptional, growing companies in the lower middle market.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchMinneapolis, MN, United StatesHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“Goldner Hawn was founded in 1989 in Minneapolis, Minnesota and has been a source of private capital to leading lower middle market companies for the past 30 years.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-5020 contacts →

Exact match

“Akoya Capital is a Chicago-based sector-focused private investment firm, specializing in the lower end of the middle market.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 298 middle market companies based in the United States

See the full list, filter by size, metro and specialty, and access 1,175 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Middle market companies based in the United States at a glance

As of Sep 20, 2026
43.2%Verified-email coverage
9.1Average contacts per company
1-10Median size (employees)
8.7%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
227
11-50
62
51-200
8
501-1,000
1

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 298 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 “middle market 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 1,175 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.

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

How many middle market companies are there based in the United States?

RevenueBase identified 298 company matches for middle market companies 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?

CEO Connection tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most middle market companies?

New York leads with 26 company records, followed by Chicago (23) and Boston (11).

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 1,175 professional contacts with verified work emails tracked across these 298 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.